Emily Riehl is an American mathematician who has contributed to higher category theory and homotopy theory. Much of her work, including her PhD thesis, concerns model structures and more the foundations of infinity-categories, she serves on the editorial boards of three journals. Riehl grew up in Illinois; as a high school student at University High School in Normal in 2002, Riehl won third place in the national Intel Science Talent Search for a project in mathematics entitled "On the Properties of Tits Graphs". She attended Harvard University as an undergraduate, she headed the school rugby team and played viola in the Harvard–Radcliffe Orchestra. After Harvard, she completed part III of the Maths Tripos at Cambridge, she defended her doctoral dissertation, Algebraic model structures, at the University of Chicago in 2011, supervised by J. Peter May. Between 2011 and 2015, she held a position at Harvard University as a Benjamin Peirce Postdoctoral Fellow. Since 2015, she has been employed at Johns Hopkins University, where she became an associate professor in 2019.

In addition, she has hosted videos for Numberphile. In January 2020, she received the JHU President's Frontier Award, a $250,000 award that "supports individuals at Johns Hopkins who are breaking new ground and poised to become leaders in their field", she is the sixth JHU faculty member to receive the award. Riehl is a host of the n-Category Café, a blog on subjects related to category theory in mathematics and philosophy, she is a board member of the mathematical association Spectra. In addition to her mathematical work, Riehl has competed on the United States women's national Australian rules football team at the Australian Football International Cup, was vice captain of the team at the 2017 cup. While working as a postdoctoral researcher at Harvard, she played electric bass in the band Unstraight, she has written about "unstraightening" in her mathematical research. Riehl is the author of two books, with a third in preparation: Categorical Homotopy Theory, Cambridge University Press Category Theory in Context, Dover Elements of ∞-Category Theory, with Dominic Verity, online draft.

"Emily Riehl's homepage". Johns Hopkins University

Aconitum columbianum is a species of flowering plant in the buttercup family known by the common names Columbian monkshood or western monkshood. This wildflower is native to western North America where it grows in riparian and other moist areas, in meadows and coniferous forests, it is found from 600–2,900 metres in elevation. Aconitum columbianum is a tall spindly erect to scandent forb, perennial from rhizomes, it long stems with far-spaced flowers. The folded, wrinkly flowers are deep blue or purple, but may be white or yellowish, they have a spur; the fruits are pod-like follicles. Like other monkshoods, this plant is poisonous to humans and livestock, although some species have been used to make drugs. Subspecies and varieties include: Aconitum columbianum ssp. columbianum Aconitum columbianum var. howellii — Howell's monkshood Aconitum columbianum ssp. viviparum Jepson Manual Treatment of Aconitum columbianum CalFlora Database: Aconitum columbianum Aconitum columbianum — U. C. Photo gallery