# Olivier Bégassat

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olivier dot begassat dot cours at gmail dot com

# 208 Reviews

 Mar12 reviewed Close The property of positive fourier series. Mar2 reviewed Close Choosing $5$ cards from a deck of $52$ cards Mar2 reviewed Close Nilpotent Subring Mar2 reviewed Close Proving density of $\mathbb{Q}^n$ in $\mathbb{R}^n$ Feb26 reviewed Close How many ways can 5 of 9 factories be visited? Feb26 reviewed Leave Open Equality in Minkowski's inequality proof(no integrals) Feb26 reviewed Leave Open Proving inverse of transpose is transpose of inverse Feb25 reviewed Approve suggested edit on How to prove a simple proposition about local rings and maximal ideals Feb21 reviewed Leave Open Find the volume bounded by a cylinder. Feb20 reviewed Approve suggested edit on Is there a general formula to represent the cardinality of a Cartesian product of n sets? Feb20 reviewed Leave Open How to evaluate this integral $\int_0^{\frac{\pi}{2}}(\ln(\tan x))^2dx$? Feb20 reviewed Approve suggested edit on Inducing homomorphisms on localizations of rings/modules Feb20 reviewed Close Prove that $(a,bc)=1$ if and only if $(a,b)=1$ and $(a,c)=1$ Feb18 reviewed Approve suggested edit on Tough contest problem Feb18 reviewed Close How many seconds are there in 7 3/8 minutes? Feb18 reviewed Leave Open How to compute the value of $1 \cdot \frac{2}3 \cdot \frac 45 \cdots$, as $n$ goes to infinity? Feb15 reviewed Approve suggested edit on Permutations using coefficient method Feb15 reviewed Approve suggested edit on $4^x-4^{x-1}=24$ what is the value of $(2x)^x$?" Feb14 reviewed Approve suggested edit on Structure of coalgebra on $\mathbb Z/n\mathbb Z$ Feb8 reviewed Approve suggested edit on Limits of general functions