Jean-Pierre Serre, the renowned French mathematician, turned 100 today. Born in Bages, Pyrénées Orientales, Serre developed a passion for mathematics as a child, excelled in competitions, and became the youngest member of the prestigious Bourbaki group of mathematicians in the late 1940s after studying at the École Normale Supérieure.
OpenAI may have constructed a counterexample to the Hodge conjecture, a major unsolved problem in mathematics. André Weil, a pioneering algebraic geometer, was among the earliest to doubt the conjecture and attempt counterexamples, developing what became known as Weil classes—Hodge classes arising from symmetry that may not correspond to algebraic cycles.
Eiffel Tower staff in Paris struck Monday after female employees were excluded during a visit by Hindu spiritual group BAPS, which had requested limited interactions with women. Tower operator SETE acknowledged the decision was a mistake and called it unjustifiable, while Paris Mayor Gregoire condemned the incident as unacceptable. The tower reopened Tuesday after the full-day closure.