Yvonne Choquet-Bruhat, French mathematician and physicist (died 2025)

Yvonne Choquet-Bruhat was a French mathematician and physicist. She made seminal contributions to the study of general relativity, by showing that the Einstein field equations can be put into the form of an initial value problem which is well-posed. In 2015, her breakthrough paper was listed by the journal Classical and Quantum Gravity as one of thirteen 'milestone' results in the study of general relativity, across the hundred years in which it had been studied.

December 29 is the 363rd day of the year in the Gregorian calendar; two days remain until the end of the year.