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  • 44 votes cast
Mar
11
accepted Accelerated Order of Convergence
Mar
11
asked Accelerated Order of Convergence
Mar
10
accepted When is the image of a linear operator closed?
Mar
9
asked When is the image of a linear operator closed?
Mar
7
comment How to find basis for intersection of two vector spaces
The procedure can be described as: (i) put down a list of the basis vectors of $U$ and $W$ (ii) Perform base changes on both list until a common vector appears. Keep that one. Repeat for the other vectors, until no common vectors can be found anymore.
Feb
24
comment Create unique number from 2 numbers
You do not specify what you mean by making a number out of two numbers.
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