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34m
answered Is this equality correct?
43m
answered Find a sequence of measurable functions defined on a measurable set $E$ that converges everywhere on $E$, but not almost uniformly on $E$.
2h
answered Why is $\Delta u$ bounded, if $u\in C^2(\overline{\Omega})$ and $\Omega\subseteq\mathbb{R}^n$ is a bounded domain?
2h
answered Contest Problem
2h
answered Computability: is there an alternative method to decide this language?
11h
answered Solving a system of ODEs with variable in matrix A
11h
answered Representation of a matrix as product of unitary matrices and diagonal matrix
11h
answered How can I prove $\phi(m)*\phi(n) = \phi(lcm(m,n))* \phi(\gcd(m,n))$ where $\phi$ is eulers $\phi$ function?
17h
answered Show that f(x) is convex
22h
answered Finite field, how to satisfy equation?
22h
answered Linear Algebra-invariant subspaces
23h
answered If each term in a sum converges, does the infinite sum converge too?
23h
answered How to fastest approximate definite integrals
1d
answered finding the value of a node in Pascal’s (a.k.a Yanghui's) triangle
1d
answered Counter Example to Tietze Extension Property for Arbitrary Topological Space
1d
answered Floor inequality: $\lfloor x+y\rfloor\ge \lfloor x\rfloor+\lfloor y\rfloor$
1d
answered Conditions on $f(t)$ so that $\int_{-\infty}^\infty f(t) \operatorname{sinc}(t-a) \operatorname{sinc}(t-b) dt$ converges.
1d
answered Finding integer solutions of $m^2-n^5 = m - n$
1d
answered What is the connection between $V(\vec x) = \frac{1}{2}(x_1^2+x_1x_2+x_2^2)$ and $V(\vec x) = \frac {1}{2} x^TPx $?
1d
answered Convergence Sequence on compact set