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Jun
30
awarded  Popular Question
Jun
28
comment Strange integral test for convergence in my Analysis Script (proof flawed ?)
The statement as you stated basically says that you can write sum as integral of some step function. Note that $\varphi$ is continuous only iff $a_n$ is constant sequence. Such $\varphi$ can be hardly integrated analytically.
Jun
18
reviewed Approve 10% lower and 10% higher of 100
Jun
18
asked Is function $u$ nice when all $\Delta^k u$ are nice?
Jun
9
asked Characterization of Bochner dual
Jun
4
comment Construct Curvilinear Coordinates from “Tangent Basis Field”
And one more thing. Eigen vectors do not have to be continuous when the tensor field is continuous. I once had such a question and found counterexample math.stackexchange.com/questions/318521/…
Jun
4
comment Construct Curvilinear Coordinates from “Tangent Basis Field”
Exactly this idea is used in geometry processing for remeshing. I googled this article which looks like good starting point geometry.caltech.edu/pubs/ACDLD03.pdf
May
3
reviewed Approve Converting recurrence into matrix
Apr
26
awarded  Inquisitive
Apr
25
comment Find all solutions to integral equation
Why $F$ has to be continuous, when $f,h \in L^2$?
Apr
25
comment Find all solutions to integral equation
Consider it as part of the problem, for given $f,F$ is there such $h$? and how nice the $h$ is?
Apr
25
comment Find all solutions to integral equation
Well I have no strict requirements on those functions. They probably have to be $L^2$ to make sense of those integrals. But you can assume that they are continuous if you want to.
Apr
25
asked Find all solutions to integral equation
Apr
6
asked Bochner-Sobolev space definition
Mar
26
awarded  Custodian
Mar
26
reviewed Approve Prove the following recurrence: $F_{2n+1}=3F_{2n-1}-F_{2n-3}$
Mar
17
comment Decomposable elements of $\Lambda^k(V)$
Beautiful! After two years I got the answer :D That is what I call, necromancy done well!
Mar
17
accepted Decomposable elements of $\Lambda^k(V)$
Mar
8
awarded  Custodian
Mar
8
reviewed Reviewed Picking a delta for a convenient epsilon?