Entrance examination X ENS 25: mathematics A.
This year's A problem set, from both École Polytechnique and École Normale Supérieure entrance examinations, was pure linear algebra. With lots of matrices.
Jordan decomposition was the main theme, with an emphasis on nilpotent endomorphisms.
Please note that, although complete, this document is temporary and still needs careful proofreading!
Solution of the MP A problem set from April 14 given in the X ENS 2025 competition:
Find the problem statement is here: