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Fin8ish
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16
Why solutions of $y''+(w^2+b(t))y=0$ behave like solutions of $y''+w^2y=0$ at infinity
Nov 22, 2014
14
Leray-Schauder fixed point theorem
Nov 3, 2014
12
Question about boundedness of a sequence in $ W^{3,q} $ for any $ 1\leq q < \frac{N}{N-1} $
Jan 18, 2015
9
Searching two matrix A and B, such that exp(A+B)=exp(A)exp(B) but AB is not equal to BA. [duplicate]
Jul 28, 2014
8
Show that there is sequence of homeomorphism polynomials on [0,1] that converge uniformly to homeomorphism
Jul 29, 2014
7
$\text{rank}(AB^2)=\text{rank}(AB)$
Aug 3, 2014
7
Is $C^\infty_{0}(\bar{\Omega})$ dense in the hilbert space $W^{2,2}(\Omega)\cap W^{1,2}_{0}(\Omega)$
Jun 21, 2015
7
Convergence in the weak-star sense of measures and $ \int_{\Omega} \sqrt{1+u_k^2} \to \int_{\Omega} \sqrt {1+u_k^2}$ gives convergence in $L^1$.
Apr 14, 2019
5
Function that sends every Lebesgue measureable sets to a lebesgue measurable set. Then it sends measure zero sets to measure zero sets.
Feb 16, 2015
5
Evaluating $\int_{-\infty}^{\infty} \frac{\cos x}{1+x^2} e^{-ixt} \,\mathrm dx$
Dec 5, 2014
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5
Completion of $C_0^{\infty}(\mathbb{R}^N)$ with norm $\|u\|= \Bigg(\int_{{\mathbb{R}}^N} |\Delta u |^2 \, \mathrm{d}x \Bigg)^{\frac{1}{2}}. $
5
How to learn concepts of Functional Analysis which are common in PDE