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location Sydney, Australia
age 48
visits member for 1 year, 5 months
seen Apr 13 at 14:36

Jan
12
comment Rational roots of polynomials
@StevenStadnicki, I preferred to multiply by X and add a free term. But still no luck... as said, interesting challenge.
Jan
12
comment Rational roots of polynomials
Is the problem any easier if indexes are swapped? It seems to me letting $a_n$ being the free term is an equivalent formulation. Interesting challenge, I wish I could add some more points to the bounty...
Jan
2
comment Semigroup implies exponential
Did it, hope ok. Tnx.
Jan
1
comment Semigroup implies exponential
@Byron.Schmuland, I am still confused by your use of I as opposed to I (identity) as used by the OP, could you please rephrase your answer, I still don't get it all :( ?
Dec
23
comment Semigroup implies exponential
Well, it should be in a text book. I have seen similar "semigroups" in image analysis (or multi dimensional signal processing) all the time. Not exactly like this, but certainly close. Tnx!
Dec
23
comment Semigroup implies exponential
Humble but important result, +1 from me. Is this part of some standard text book? I would like to know...
Dec
18
comment how many elements of S
@ronno, hum, you are right. The whole question is wrong anyway. I believe there is a typo from the OP.
Dec
18
comment how many elements of S
If entries are arbitrary, the question itself is wrong (or was mistyped). See my updated answer.
Dec
18
comment how many elements of S
@PraphullaKoushik, you were right, kind of. See updated answer :)
Jul
8
comment how to generate parametrically a matrix of positive determinant
I have added relevant context.
Jun
14
comment Supposedly simple integral
I just ran it through Mathematica (which has quite advance formulas and algorithms for integration)... and nothing. In all likelihood, there is no closed form.
Feb
15
comment Wavelet Transforms
I agree this is more a dsp.stackexchange.com question. By the way, as fas as I know, the discrete wavelet transform assumes uniform sampling. But sampling issues are general regardless of the transform. Why are you interested in wavelets?
Feb
14
comment Calderon's admissibility condition for wavelets explained
Thanks for the two pointers! I will have a deeper look.