The London Mathematical Society (LMS) is one of the United Kingdom's learned societies for mathematics (the others being the Royal Statistical Society, the Institute of Mathematics and its Applications, the Edinburgh Mathematical Society and the Operational Research Society.

Augustus De Morgan (1806–1871) was a British mathematician and logician best known for formulating De Morgan's laws. De Morgan is also known for coining the term mathematical induction and formalizing the principles underlying induction. De Morgan's contributions to logic have been used in set theory, probability theory, computer science, and other fields.