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Mar
25
accepted borel measurable functions and measurable functions
Feb
7
accepted boundary of the support of a continuous function
Jun
10
accepted surface area of the graph of a convex function
May
13
accepted Min-Max Principle and Harnack's inequality
Apr
5
accepted Minimizing sequence that has certain property
Mar
30
accepted Limiting argument when proving inequality in Sobolev space
Mar
21
accepted What does it mean for a distribution to be in $L_2$?
Feb
11
accepted Approximate continuous mapping by smooth mappings on manifold(Bott, Tu book)
Nov
15
accepted Confused at the definition for integration of differential form over manifold
Sep
26
accepted How do I see that the tangent bundle of torus is trivial
Sep
10
accepted How to show the height function of a torus has 4 critical points
Aug
1
accepted generalized Rayleigh Quotient
Jul
27
accepted Proof of Gauss's Lemma (Riemannian Geometry version)
Jun
8
accepted To define a measure, is it sufficient to define how to integrate continuous function?
May
28
accepted Prove the equation has a root.
May
28
accepted Can anybody recommend me a topology textbook?
May
26
accepted The behavior of a density function at infinity
May
1
accepted weak convergence on $\ell_1$
Apr
23
accepted The direct sum of two closed subspace is closed? (Hilbert space)
Mar
27
accepted if $A^k$ is compact for some positive $k$, is it possible that $A$ is not bounded?