It's easy to get lost in the immensity of the world of matrices, the different types, their properties, the location of their eigenvalues, the different possible decompositions that apply to each category... This brilliant document, created by Kenji Hirana…

We end this series of problems for the 2023 PC competitive examination with this interminable subject, which goes off in just about every direction: polynomials, Python programming, integer series, summation of double series and finally probability. In my …

The first part of the answer key for the (very long) maths 2 PC subject. Answers to the Maths 2 test on May 12 in the PC Centrale Supelec 2023 exam: Problem set: …

The subject was quite dense, with many questions (35 compared with, for example, 24 for the Mines-Ponts 1 subject); however, there were many relatively simple questions, or those with a generous indication. The subject focused on the spectral radius of mat…

The subject was Markov chains. A discrete system was modeled, with the number of transitions in the interval \([0,t]\) following a Poisson distribution. Quite a few tricky sum calculations, but the subject seemed a little simpler than the 1st, and in any cas…