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Feb
24
comment How can $\frac{1}{a/x-b/x}$ be equal to $\frac{1}{a-b}$?
which books is this from?
Feb
24
asked Realification and Complexification of vector spaces
Feb
23
accepted On the isometry between bounded linear operators and the dual of nuclear linear operators
Feb
22
revised On the isometry between bounded linear operators and the dual of nuclear linear operators
corrected title
Feb
22
asked On the isometry between bounded linear operators and the dual of nuclear linear operators
Feb
20
answered How to effectively and efficiently learn mathematics
Feb
20
comment Heat kernel has uniformly bounded derivatives
Thank you very much. It seems I misunderstood the meaning of uniformly bounded.
Feb
20
accepted Heat kernel has uniformly bounded derivatives
Feb
19
comment Heat kernel has uniformly bounded derivatives
Mea culpa. It has been a typo.
Feb
19
comment Why $\frac{x}{x+1}=\frac{1}{x^{-1}+1}$
It might be helpful to note, that there is a blow-up at -1, as expected while at 0 the right expression is formally undefined, but it makes sense give it the value 0 (by continouos extension, if you know this). Plotting this function might help you.
Feb
19
revised Heat kernel has uniformly bounded derivatives
added 34 characters in body
Feb
19
comment Heat kernel has uniformly bounded derivatives
I am very sorry for the typo in the exponent and that I missed to mention the domain on which to bound the kernel. I have corrected this -- the question is important when it comes to show the integrability of the convolution with the heat kernel.
Feb
19
revised Heat kernel has uniformly bounded derivatives
typo
Feb
18
asked Heat kernel has uniformly bounded derivatives
Feb
18
accepted Question on Evans' treatment of elliptic 2n order equations
Feb
18
accepted Different definitions for Lebesgue points
Feb
18
asked Question on Evans' treatment of elliptic 2n order equations
Feb
17
comment Combining Two 3D Rotations
depending on what on context of the problem, you might compute the eigenspace of eigenvalue 1 (i.e. the rotation axis whose vectors are fixed under that rotation).
Feb
17
accepted Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic
Feb
11
asked Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic