Search results for “inequality”

49th International Mathematical Olympiad. Madrid, Spain, 10-22 July 2008.

53rd International Mathematical Olympiad. Mar del Plata, Argentina, 2012.

61st International Mathematical Olympiad, 2020.

62nd International Mathematical Olympiad, 2021.

64th International Mathematical Olympiad. Chiba, Japan, 2023.

An example, due to Serre, of a smooth projective surface in positive characteristic whose Picard scheme fails to be reduced, worked out via the two governing dimension inequalities.