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ACB
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7
Computation of an integral using residue theorem.
Jul 27, 2021
6
Is the product of two Cesaro convergent series Cesaro convergent?
Jul 21, 2020
6
Fubini's theorem for integrable functions.
Jul 29, 2020
6
Is $f(a)$ normal in $A\ $?
Oct 21, 2021
6
Proving that the algebraic multiplicity of $\lambda$ is the rank of the projection $P.$
Oct 29, 2021
5
How to prove that the map $T \mapsto T^{-1}$ is continuous?
Dec 10, 2020
5
Does there exist smooth functions $f_i,g_i \in C^{\infty} (\mathbb R)$ such that $\sin (xy) = \sum\limits_{i = 1}^{n}f_i (x) g_i (y)$ for all $x,y\ $?
Nov 18, 2022
5
How can complement of the Cantor set be the countable union of open intervals?
Apr 14, 2024
5
Show that for each $k \in \mathbb N$ with $k \geq 4$ there exists a prime number $p$ such that $\Omega (N_p) = k.$
Aug 19, 2022
5
Prove that $\lim\limits_{t \to \infty} x(t)$ exists and is an integer.
Sep 4, 2020