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Aug
28
accepted Prove that $f$ is smooth if $x f$, $y f$ are smooth
Aug
15
accepted Is this expression for the Riemann Tensor correct?
Aug
15
accepted What does this notation means in noncommutative case
Feb
4
accepted Find all the functions which satisfy a given functional equation
Oct
29
accepted At most three different eigenvalues
Oct
29
accepted airy equation vanish infinitely many times
Oct
17
accepted Quick criterion to decide whether a limit of functions in $W^{1,p}(\Omega)$ is in that space
Oct
4
accepted How to evaluate this limit?
Oct
2
accepted Difficult limit involving $n$-th root and $n$-th exponentiation
Sep
27
accepted Prove the divergence of a particular series, given that another series diverges
Sep
11
accepted Inequality with unusual constraint $a,b,c\in (0,1)$ such that $1+abc=a(bc+a)+b(ca+b)+c(ab+c)$
Sep
8
accepted Weak closedness implies closed and convex
Sep
5
accepted Integral inequality on a periodic function
Sep
5
accepted Relation on fourier coefficients implies smoothness for a periodic continuous function
Sep
4
accepted Unusual sufficient condition to have strong convergence in $L^1([0,1])$
Sep
2
accepted Strong Convergence in $L^2(I)$
Aug
31
accepted existence of a map between $\mathbb R^2$ and $\mathbb R$
Aug
30
accepted Differential system on the torus 2
Aug
29
accepted convergence in $L^r(I)$
Aug
25
accepted necessary conditions to be relatively compact