1.
Mathematical Association of America
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The Mathematical Association of America is a professional society that focuses on mathematics accessible at the undergraduate level. The MAA was founded in 1915 and is headquartered at 1529 18th Street, Northwest in the Dupont Circle neighborhood of Washington, the organization publishes mathematics journals and books, including the American Mathematical Monthly, the most widely read mathematics journal in the world according to records on JSTOR. The MAA sponsors the annual summer MathFest and cosponsors with the American Mathematical Society the Joint Mathematics Meeting, on occasion the Society for Industrial and Applied Mathematics joins in these meetings. Twenty-nine regional sections also hold regular meetings, the association publishes multiple journals, The American Mathematical Monthly is expository, aimed at a broad audience from undergraduate students to research mathematicians. Mathematics Magazine is expository, aimed at teachers of undergraduate mathematics, the College Mathematics Journal is expository, aimed at teachers of undergraduate mathematics, especially at the freshman-sophomore level. Math Horizons is expository, aimed at undergraduate students, MAA FOCUS is the association member newsletter. The Association publishes an online resource, Mathematical Sciences Digital Library, the service launched in 2001 with the online-only Journal of Online Mathematics and its Applications and a set of classroom tools, Digital Classroom Resources. These were followed in 2004 by Convergence, a history magazine, and in 2005 by MAA Reviews, an online book review service, and Classroom Capsules and Notes. Ultimately, six high school students are chosen to represent the U. S. at the International Mathematics Olympiad. Allendoerfer Award, Trevor Evans Award, Lester R. Ford Award, George Pólya Award, Merten M. Hasse Award, Henry L. Alder Award, a detailed history of the first fifty years of the MAA appears in May. A report on activities prior to World War II appears in Bennet, further details of its history can be found in Case. In addition numerous regional sections of the MAA have published accounts of their local history, the MAA has for a long time followed a strict policy of inclusiveness and non-discrimination. In previous periods it was subject to the problems of discrimination that were widespread across the United States. M. Holloway came to the meeting and were able to attend the scientific sessions, however, the organizer for the closing banquet refused to honor the reservations of these four mathematicians. Lorch and his colleagues wrote to the bodies of the AMS. Bylaws were not changed, but non-discriminatory policies were established and have been observed since then. The Associations first woman president was Dorothy Lewis Bernstein, the Carriage House that belonged to the residents at 1529 18th Street, N. W. dates to around 1900. It is older than the 5-story townhouse where the MAA Headquarters is currently located, charles Evans Hughes occupied the house while he was Secretary of State and a Supreme Court Justice

2.
Carl B. Allendoerfer
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Carl Barnett Allendoerfer was an American mathematician in the mid-twentieth century, known for his work in topology and mathematics education. Allendoerfer was born in Kansas City, the son of a prominent banker and he graduated from Haverford College in 1932 and attended New College, Oxford as a Rhodes Scholar, 1932-1934. He received his Ph. D. in mathematics from Princeton University in 1937, Allendoerfer taught at Haverford College in the mid-1940s where he became known for work with André Weil on the Gauss–Bonnet theorem, an important theorem in differential geometry. He continued his studies of differential geometry at the Institute for Advanced Study, Allendoerfer was president of the Mathematical Association of America and editor of its monthly journal. In 1966 he won a Lester R. Ford Award, in 1972, he received the MAAs Award for Distinguished Service to Mathematics. After his death, the MAA established the Carl B, Allendoerfer Award, which is given each year for expository excellence published in Mathematics Magazine. Allendoerfer was a member of Commission on Mathematics of the College Entrance Examination Board whose 1959 report Program for College Preparatory Mathematics outlined many concepts of the New Math. The commission and report were criticized by some for emphasizing pure mathematics in place of traditional and practical considerations like arithmetic. Allendoerfer was the author, with Cletus Oakley, of several prominent mathematics textbooks used in the 1950s and 1960s and he was also author of a series of math films. & Oakley, Cletus O. Principles of Mathematics, & Oakley, Cletus O. Fundamentals of Freshman Mathematics. & Oakely, Cletus O. Fundamentals of College Algebra, Principles of Arithmetic and Geometry for Elementary School Teachers. Calculus of Several Variables and Differentiable Manifolds, Oakley, Cletus O. & Kerr, Donald R. Elementary Functions. Allendoerfer produced the films for Wards Natural Science in Rochester, New York

3.
Raymond Clare Archibald
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Raymond Clare Archibald was a prominent Canadian-American mathematician. He is known for his work as an historian of mathematics, his editorships of mathematical journals, Raymond Clare Archibald was born in South Branch, Stewiacke, Nova Scotia on 7 October 1875. He was the son of Abram Newcomb Archibald and Mary Mellish Archibald and he was the fourth cousin twice removed of the famous Canadian-American astronomer and mathematician Simon Newcomb. Archibald graduated in 1894 from Mount Allison College with B. A. degree in mathematics and teachers certificate in violin. After teaching mathematics and violin for a year at the Mount Allison Ladies’ College he went to Harvard where he received a B. A.1896 and a M. A. in 1897. He then traveled to Europe where he attended the University of Berlin during 1898 and his advisor was Karl Theodor Reye and title of his dissertation was The Cardioide and Some of its Related Curves. He returned to Canada in 1900 and taught mathematics and violin at the Mount Allison Ladies’ College until 1907, after a one-year appointment at Acadia University he accepted an invitation of join the mathematics department at Brown University. He stayed at Brown for the rest of his becoming a Professor Emeritus in 1943. While at Brown he created one of the finest mathematical libraries in the western hemisphere, Archibald returned to Mount Allison in 1954 to curate the Mary Mellish Archibald Memorial Library, the library he had founded in 1905 to honor his mother. At his death the library contained 23,000 volumes,2,700 records, Raymond Clare Archibald was a world-renowned historian of mathematics with a lifelong concern for the teaching of mathematics in secondary schools. This knowledge and an untiring energy he dedicated to the upbuilding of the library at Brown University. From modest beginnings he has developed this essential equipment of the investigator to a point where it has no superior, in completeness. Archibald received honorary degrees from the University of Padua, Mount Allison University and he contributed to over 20 different journals, mathematical, scientific, educational and literary. S. Government Printing Office,1917 Benjamin Peirce, 1809—1880, 1951—1960,1964 Who Was Who in America. Fiftieth Anniversary Report,1946 Jim Tattersall and Shawnee McMurran, Raymond Clare Archibald, A Euterpean Historian of Mathematics, New England Math J. v. ~36, Works by Raymond Clare Archibald at Project Gutenberg Works by or about Raymond Clare Archibald at Internet Archive

4.
Thomas Banchoff
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Thomas Francis Banchoff is an American mathematician specializing in geometry. He is a professor at Brown University, where he has taught since 1967, Banchoff attended the University of Notre Dame and received his Ph. D from UC Berkeley in 1964, where he was a student of Shiing-Shen Chern. Before going to Brown he taught at Harvard University and the University of Amsterdam, in 2012 he became a fellow of the American Mathematical Society. He was a president of the Mathematical Association of America, with Stephen Lovett, Differential Geometry of Curves and Surfaces, A. K. Proc. Critical points and curvature for embedded polyhedra, donald J. Albers & Gerald L. Alexanderson Fascinating Mathematical People, interviews and memoirs, Tom Banchoff, pp 57–78, Princeton University Press, ISBN 978-0-691-14829-8. Illustrating Beyond the Third Dimension by Thomas Banchoff & Davide P. Cervone Personal web page biography as president of MAA

5.
Dorothy Lewis Bernstein
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Dorothy Lewis Bernstein was an American mathematician known for her work in applied mathematics, statistics, computer programming, and her research on the Laplace transform. She was the first woman to be elected president of the Mathematics Association of America, Dorothy Bernstein was born in Chicago, the daughter of Jewish Russian immigrants Jacob and Tille Lewis Bernstein. In 1930 she attended the University of Wisconsin-Madison and where she held a University Scholarship and was elected to Phi Beta Kappa, in 1934 she graduated with both a B. A degree, summa cum laude, and a M. A. Degree in Mathematics. She did her masters thesis research on finding complex roots of polynomials by an extension of Newtons method, in 1935 she attended Brown University, where she became a member of the scientific society Sigma Xi. She received her Ph. D. in mathematics from Brown in 1939 and her dissertation was entitled The Double Laplace Integral and was published in the Duke Mathematical Journal. From 1943–1959 Bernstein taught at the University of Rochester, where she worked on existence theorems for partial differential equations and her work was motivated by non-linear problems that were just being tackled by high-speed digital computers. In 1950, Princeton University Press published her book, Existence Theorems in Partial Differential Equations and she spent 1959–1979 as a professor of mathematics at Goucher College, where she was chairman of the mathematics department for most of that time. She professed that she was particularly interested combining pure and applied mathematics in the undergraduate curriculum and she also developed an internship program for Goucher mathematics students to obtain meaningful employment experience. In 1972 Bernstein cofounded the Maryland Association for Educational Uses of Computers, Bernstein was very active in the Mathematical Association of America, where she was on the board of governors from 1965 to 1968. She served as the president in 1972–73, and later became the first female president of the MAA in 1979–80. She noted that attitudes and opportunities for women changed drastically after World War II, Dorothy Lewis Bernstein, in Grinstein, Louise S. Campbell, Paul J. Women of Mathematics, A Bio-Bibliographic Sourcebook, New York, Greenwood Press, pp. 17–20, Dorothy Lewis Bernstein, Biographies of Women Mathematicians, Agnes Scott College Preface of Existence Theorems in Partial Differential Equations Bernstein, Dorothy Lewis. This article incorporates material from Dorothy Bernstein on PlanetMath, which is licensed under the Creative Commons Attribution/Share-Alike License

6.
Florian Cajori
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Florian Cajori was a Swiss-American historian of mathematics. Florian Cajori immigrated to the United States at the age of sixteen and he received both his bachelors and masters degrees from the University of Wisconsin–Madison. He taught for a few years at Tulane University, before being appointed as professor of applied mathematics there in 1887 and he was then driven north by tuberculosis. While in Colorado, he received his doctorate from Tulane in 1894, cajoris A History of Mathematics was the first popular presentation of the history of mathematics in the United States. He remained in Berkeley, California until his death in 1930, Cajori did no original mathematical research unrelated to the history of mathematics. In addition to his numerous books, he also contributed highly recognized and his last work was a revision of Andrew Mottes 1729 translation of Newtons Principia, vol.1 The Motion of Bodies, but he died before it was completed. The work was finished by R. T. Crawford of Berkeley,1893, A History of Mathematics, Macmillan & Company. 1898, A History of Elementary Mathematics, Macmillan,1909, A History of the Logarithmic Slide Rule and Allied Instruments The Engineering News Publishing Company. 1919, A History of the Conceptions of Limits and Fluxions in Great Britain, from Newton to Woodhouse,1920, On the History of Gunters Scale and the Slide Rule during the Seventeenth Century Vol.1, University of California Press. 1928, A History of Mathematical Notations The Open Court Company,1934, Sir Isaac Newtons Mathematical Principles of Natural Philosophy and His System of the World tr. Andrew Motte, rev. 1923, The History of Notations of the Calculus, Florian Cajori at the Mathematics Genealogy Project Florian Cajori. A History of the Conceptions of Limits and Fluxions in Great Britain, from Newton to Woodhouse

7.
Arnold Dresden
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Arnold Dresden was a Dutch-American mathematician in the first part of the twentieth century, known for his work in the calculus of variations and collegiate mathematics education. He was a president of the Mathematical Association of America, Dresden was born in Amsterdam on November 23,1882, into a wealthy banking family. After matriculating for three years at the University of Amsterdam he used money in 1903 to book passage on a ship to New York City. He then traveled to Chicago to help a friend, arriving there on his 21st birthday, Dresden taught at the University of Wisconsin 1909–1927. During this time he wrote papers on the calculus of variations. In 1935–1936 he was on sabbatical at the Institute for Advanced Study and he died on April 10,1954 in Swarthmore, Pennsylvania, at age 71. While at Wisconsin Arnold Dresden was active in and served as secretary of, a charter member of the Mathematical Association of America, he was elected President for 1933–1934. He also served as Vice-President during 1931 and as a member of the Board of Governors for 1935–1940, a recurring theme was his belief that abstract concepts can be grasped by young people, which he preached in his 1936 book, An Invitation to Mathematics. He also wrote three textbooks and translated van der Waerden’s classic Science Awakening from Dutch into English, the second derivatives of the extremal-integral. On the second derivatives of an extremal-integral with an application to a problem with end points. Brouwers contributions to the foundations of mathematics, some recent work in the calculus of variations. On the generalized Vandermonde determinant and symmetric functions, on the iteration of linear homogeneous transformations. NY and London, John Wiley and Chapman & Hall, Dover, waerden, B. L. van der, English trans

8.
Joseph Gallian
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Joseph A. Gallian is an American mathematician, the Morse Alumni Distinguished University Professor of Teaching in the Department of Mathematics and Statistics at the University of Minnesota Duluth. Gallian completed his Ph. D. thesis, entitled Two-Step Centralizers in Finite p-Groups and he has been a professor at the University of Minnesota Duluth since 1972. In addition to teaching classes, he has taught a Humanities course called the The Lives and Music of the Beatles for more than 25 years. Gallian has authored or edited five books and over 100 articles and he earned media attention in 1991 when he determined the methods used by Minnesota and many other states for assigning drivers license numbers. Every summer since 1977, Gallian has run a Research Experience for Undergraduates program at the University of Minnesota Duluth, the program has been funded by the University of Minnesota Duluth grants from the National Science Foundation and the National Security Agency. It is one of the oldest and longest running REUs in the country, as of the end of 2011, the program has had 178 undergraduate participants and has produced more than 180 publications in mainstream professional journals. More than 100 Duluth REU students have received a PhD degree, Gallian served a 2-year term as the President of the Mathematical Association of America starting in January 2007. Gallian has won both the Allendoerfer and Evans awards for exposition from the Mathematical Association of America and was the Polya lecturer for the MAA from 1999 to 2001, in 2011 he received the MAAs Yueh-Gin Gung and Dr. Charles Y. Hu Distinguished Service to Mathematics Award, in 2000, Gallian was named by a Duluth newspaper as one of the 100 Great Duluthians of the 20th Century. In 2012 he became a fellow of the American Mathematical Society, washington, DC, Mathematical Association of America. A dynamic survey of graph labeling, donald J. Albers & Gerald L. Alexanderson. Fascinating Mathematical People, interviews and memoirs

9.
Ronald Graham
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He has done important work in scheduling theory, computational geometry, Ramsey theory, and quasi-randomness. Graham was born in Taft, California, in 1962, he received his Ph. D. in mathematics from the University of California, Berkeley and began working at Bell Labs and later AT&T Labs. He was director of information sciences in AT&T Labs, but retired from AT&T in 1999 after 37 years and his 1977 paper considered a problem in Ramsey theory, and gave a large number as an upper bound for its solution. Graham popularized the concept of the Erdős number, named after the highly prolific Hungarian mathematician Paul Erdős, a scientists Erdős number is the minimum number of coauthored publications away from a publication with Erdős. He co-authored almost 30 papers with Erdős, and was also a good friend, Erdős often stayed with Graham, and allowed him to look after his mathematical papers and even his income. Graham and Erdős visited the young mathematician Jon Folkman when he was hospitalized with brain cancer, between 1993 and 1994 Graham served as the president of the American Mathematical Society. He has published about 320 papers and five books, including Concrete Mathematics with Donald Knuth and he is married to Fan Chung Graham, who is the Akamai Professor in Internet Mathematics at the University of California, San Diego. He has four children, daughters Ché, Laura and Christy, in 2003, Graham won the American Mathematical Societys annual Steele Prize for Lifetime Achievement. The prize was awarded on January 16 that year, at the Joint Mathematics Meetings in Baltimore, in 1999 he was inducted as a Fellow of the Association for Computing Machinery. Graham has won other prizes over the years, he was one of the laureates of the prestigious Pólya Prize the first year it was ever awarded. And the Carl Allendoerfer prize which was established in 1976 for the reasons, however for a different magazine. In 2012 he became a fellow of the American Mathematical Society, with Paul Erdős, Old and new results in combinatorial number theory. L’Enseignement Mathématique,1980 with Fan Chung, Erdős on Graphs, a. K. Peters,1998 with Jaroslav Nešetřil, The mathematics of Paul Erdős. Springer,1997 Rudiments of Ramsey Theory, American Mathematical Society,1981 with Donald E. Knuth & Oren Patashnik, Concrete Mathematics, a foundation for computer science. Addison-Wesley,1989,1994 with Joel H, spencer & Bruce L. Rothschild, Ramsey Theory. Wiley,1980,1990 with Martin Grötschel & László Lovász, Handbook of Combinatorics

10.
Victor Klee
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Victor L. Klee, Jr. was a mathematician specialising in convex sets, functional analysis, analysis of algorithms, optimization, and combinatorics. He spent almost his entire career at the University of Washington in Seattle, born in San Francisco, Vic Klee earned his B. A. degree in 1945 with high honors from Pomona College, majoring in mathematics and chemistry. He did his studies, including a thesis on Convex Sets in Linear Spaces. After teaching for years at the University of Virginia, he moved in 1953 to the University of Washington in Seattle, Washington. Klee wrote more than 240 research papers and he proposed Klees measure problem and the art gallery theorem. Kleetopes are also named him, as is the Klee–Minty cube. Klee served as president of the Mathematical Association of America from 1971 to 1973, in 1972 he won a Lester R. Ford Award. Grünbaum, Branko, Robert R. Phelps, Peter L. Renz, Washington, DC, Mathematical Association of America. Short biography, and reminiscences of colleagues, applied Geometry and Discrete Mathematics a volume dedicated to Klee on his 65th birthday

11.
Saunders Mac Lane
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Saunders Mac Lane was an American mathematician who co-founded category theory with Samuel Eilenberg. Mac Lane was born in Norwich, Connecticut, near where his family lived in Taftville and he was christened Leslie Saunders MacLane, but Leslie fell into disuse because his parents, Donald MacLane and Winifred Saunders, came to dislike it. He began inserting a space into his surname because his first wife found it difficult to type the name without a space and he was the oldest of three brothers, one of his brothers, Gerald MacLane, also became a mathematics professor at Rice University and Purdue University. Another sister died as a baby and his father and grandfather were both ministers, his grandfather had been a Presbyterian, but was kicked out of the church for believing in evolution, and his father was a Congregationalist. His mother, née Winifred Saunders, studied at Mount Holyoke College and taught English, Latin, in high school, Mac Lanes favorite subject was chemistry. While in high school, his father died, and he came under his grandfathers care and his half-uncle, a lawyer, determined to send him to Yale University, where many of his relatives had been educated, and paid his way there beginning in 1926. As a freshman, he became disillusioned with chemistry and his mathematics instructor, Lester S. Hill, coached him for a local mathematics competition which he won, setting the direction for his future work. He went on to study mathematics and physics as a major, taking courses from Jesse Beams, Ernest William Brown, Ernest Lawrence. Northrop, and Øystein Ore, among others and he graduated from Yale with a B. A. in 1930. During this period, he published his first scientific paper, in physics, Mac Lane neglected to actually apply to the program, but showed up and was admitted anyway. His greatest influences there were Paul Bernays and Hermann Weyl, by the time he finished his doctorate in 1934, Bernays had been forced to leave because he was Jewish, and Weyl became his main examiner. At Göttingen, Mac Lane also studied with Gustav Herglotz and Emmy Noether, within days of finishing his degree, he married Dorothy Jones, from Chicago, and soon returned to the U. S. From 1934 through 1938, Mac Lane held short term appointments at Yale University, Harvard University, Cornell University, and he then held a tenure track appointment at Harvard from 1938 to 1947. In 1947, he accepted an offer to return to Chicago and he traveled as a Guggenheim Fellow to ETH Zurich for the 1947–1948 term, where he worked with Heinz Hopf. Mac Lane succeeded Stone as department chair in 1952, and served for six years, Mac Lane was vice president of the National Academy of Sciences and the American Philosophical Society, and president of the American Mathematical Society. While presiding over the Mathematical Association of America in the 1950s and he was a member of the National Science Board, 1974–1980, advising the American government. In 1976, he led a delegation of mathematicians to China to study the conditions affecting mathematics there, Mac Lane was elected to the National Academy of Sciences in 1949, and received the National Medal of Science in 1989. After a thesis in mathematical logic, his work was in field theory

12.
Edwin E. Moise
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Edwin Evariste Moise was an American mathematician and mathematics education reformer. After his retirement from mathematics he became a critic of 19th century English poetry and had several notes published in that field. Edwin E. Moise was born December 22,1918 in New Orleans and he graduated from Tulane University in 1940. He worked as a cryptanalyst and Japanese translator for the Office of the Chief of Naval Operations during World War II and he received his Ph. D. degree in mathematics from the University of Texas in 1947. His dissertation was titled An indecomposable continuum which is homeomorphic to each of its nondegenerate subcontinua, a topic in continuum theory, in his dissertation Moise coined the term pseudo-arc. Moise taught at the University of Michigan from 1947 to 1960 and he was James B. Conant Professor of education and mathematics at Harvard University from 1960 to 1971. He held a Distinguished Professorship at Queens College, City University of New York from 1971 to 1987, Moise started working on 3-manifolds while at the University of Michigan. During 1949–1951 he held an appointment at the Institute for Advanced Study during which he proved Moises theorem that every 3-manifold can be triangulated in a unique way. Moise joined the School Mathematics Study Group when it started in 1958, Moise retired from Queens College in 1987 and started a second career studying 19th century English poetry. He had six short notes of literary criticism published, in the middle and late 1960s, Moise was among the few members of the senior faculty at Harvard University who strongly and publicly opposed the Vietnam War. Moise died in New York City on December 18,1998, Elementary Geometry from an Advanced Standpoint. Moise, Edwin E. Floyd L. Downs, reading, MA, Addison Wesley Publishing Company. The Number Systems of Elementary Mathematics, Counting, Measurement, geometric Topology in Dimensions 2 and 3. Moise, Edwin E. Introductory Problem Courses in Analysis and Topology, Edwin E. Moise at the Mathematics Genealogy Project MAA presidents, Edwin Evariste Moise

13.
Ivan M. Niven
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Ivan Morton Niven was a Canadian-American mathematician, specializing in number theory. He did his studies at the University of British Columbia and was awarded his doctorate in 1938 from the University of Chicago. He was a member of the University of Oregon faculty from 1947 to his retirement in 1981 and he received the University of Oregons Charles E. Johnson Award in 1981. Niven completed the solution of most of Warings problem in 1944 and this problem, based on a 1770 conjecture by Edward Waring, consists of finding the smallest number g such that every positive integer is the sum of at most g n th powers of positive integers. David Hilbert had proved the existence of such a g in 1909, Nivens work established the value of g for all and he was president of the Mathematical Association of America from 1983 to 1984. He received the MAA Distinguished Service Award in 1989 and he died in 1999 in Eugene, Oregon. He was honored by being selected to write the Carus Monograph Number 11 and he won a Lester R. Ford Award in 1970. Niven numbers, Nivens constant, and Nivens theorem are named in his honor, also, in 2000 and he has an Erdős number of 1 because he coauthored a paper with Paul Erdős. Mathematics, A house built on sand, an unsolved case of the Waring problem

14.
David Eugene Smith
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David Eugene Smith was an American mathematician, educator, and editor. David Eugene Smith is considered one of the founders of the field of mathematics education, Smith was born in Cortland, New York, to Abram P. Smith, attorney and surrogate judge, and Mary Elizabeth Bronson, who taught her young son Latin and Greek. He attended Syracuse University, graduating in 1881 and he studied to be a lawyer concentrating in arts and humanities, but accepted an instructorship in mathematics at the Cortland Normal School in 1884 where he attended as a young man. Smith became president of the Mathematical Association of America in 1920 and he also wrote a large number of publications of various types. He edited Augustus De Morgans A Budget of Paradoxes and wrote books on Mathematics which are listed below. Michigan Historical Math Collection History of Mathematics,2 Volumes

15.
Raymond Louis Wilder
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Raymond Louis Wilder was an American mathematician, who specialized in topology and gradually acquired philosophical and anthropological interests. He played cornet in the orchestra, which performed at dances and fairs. He entered Brown University in 1914, intending to become an actuary, during World War I, he served in the U. S. Navy as an ensign. Brown awarded him his first degree in 1920, and a degree in actuarial mathematics in 1921. That year, he married Una Maude Greene, they had four children, Wilder chose to do his Ph. D. at the University of Texas at Austin, the most fateful decision of his life. Moore was initially unimpressed by the young actuary, but Wilder went on to solve a difficult problem that Moore had posed to his class. Moore suggested Wilder write up the solution for his Ph. D. thesis, Wilder thus became the first of Moores many doctoral students at the University of Texas. After a year as an instructor at Texas, Wilder was appointed assistant professor at the Ohio State University in 1924. In 1926, Wilder joined the faculty of the University of Michigan at Ann Arbor, during the 1930s, he helped settle European refugee mathematicians in the United States. Mathematicians who rubbed shoulders with Wilder at Michigan and who later proved prominent included Samuel Eilenberg, the cofounder of category theory, and the topologist Norman Steenrod. After his 1967 retirement from Michigan at the advanced age of 71, Wilder became a research associate. Wilder was vice president of the American Mathematical Society, 1950–1951, president 1955–1956, and he was president of the Mathematical Association of America, 1965–1966, which awarded him its Distinguished Service Medal in 1973. He was elected to the American National Academy of Sciences in 1963, Brown University and the University of Michigan awarded him honorary doctorates. The mathematics department at the University of California annually bestows one or more graduating seniors with an award in Wilders name, the historical, philosophical, and anthropological writings of Wilders later years suggest a warm, colorful personality. Raymond attests to this having been the case, for instance, was a devoted student of southwestern Native American culture. One day he told me that after retiring he would like to be a bartender in a area of Arizona or New Mexico. Wilders thesis set out a new approach to the Schönflies programme, a positional invariant of a set A with respect to a set B is a property shared by all homeomorphic images of A contained in B. Around 1930, Wilder moved from set-theoretic topology to algebraic topology and he then began an extensive investigation of the theory of manifolds, e. g. his Generalized closed manifolds in n-space, in effect extending the Schönflies programme to higher dimensions