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Results: 412   Search Terms: author:Robert Israel
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1) Re: Fourier transform of the square root of gaussians
Posted: Jan 20, 2011 2:30 PM, by: Robert Israel
ettevy <han.wang1981@gmail.com> writes: > Hello, my question concerns the Fourier transform of the following > real function : > f(x) = sqrt(exp(-a ...

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2) Re: Injective compact operator
Posted: Jan 9, 2011 9:28 AM, by: Robert Israel
Mate <mmatica@personal.ro> writes: > Is it true that for each Banach space X there exists a linear compact > and injective operator T ...

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3) Re: Looking for a counterexample
Posted: Nov 29, 2010 2:30 PM, by: Robert Israel
Rodolfo Conde <rcm@gmx.co.uk> writes: > > > Hi all, > > I am trying to find a counterexample for the following > proposition (which ...

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4) Re: Inifinite series with random terms.
Posted: Nov 1, 2010 4:00 AM, by: Robert Israel
Joe Copper <giorgio.garziano@tin.it> writes: > Hello, I am looking for some sources related to the evaluation of > infinite series of type: > ...

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5) Re: Minimizing the combined sphere of influence.
Posted: Oct 28, 2010 3:00 PM, by: Robert Israel
"courses@statcourse.com" <brother_unknown@yahoo.com> writes: > Am looking for formal proofs of the following conjectures: > > A. Consider a large number of circles ...

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6) Re: The balls of some compact spaces
Posted: Jun 25, 2010 11:30 AM, by: Robert Israel
William Elliot <marsh@rdrop.remove.com> writes: > Let (S,d) be a compact metric space with for all > a in S, r > 0, B[a,r] = cl B(a,r), (1) > where ...

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7) Re: Cesaro-like summability
Posted: Mar 1, 2010 10:30 AM, by: Robert Israel
Bernard <benoit7848c@orange.fr> writes: > On 26 fév, 23:00, Robert Israel <isr...@math.MyUniversitysInitials.ca> > wrote: > > Bernard <benoit78...@orange.fr> ...

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8) Re: Question about the convergence of a stationary iteration
procedure

Posted: Nov 23, 2009 4:00 AM, by: Robert Israel
Gerardo Berbeglia <gberbeglia@gmail.com> writes: > Let A be an n x n matrix such that > - 0 <= (A)ij <= 1 > - the sum over the values at a given column ...

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9) Re: non recurrent map
Posted: Oct 14, 2009 7:30 AM, by: Robert Israel
Robert Israel israel@math.MyUniversitysInitials.ca Department of Mathematics http://www.math.ubc.ca/~israel University of British Columbia Vancouver, BC, Canada ...

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10) Re: a functional equation
Posted: Sep 16, 2009 6:40 AM, by: Robert Israel
Chrystomath <chrystomath@googlemail.com> writes: > > On Sep 15, 4:25?am, andsok75 <andso...@gmail.com> wrote: > > Does this equation have any solutions ...

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11) Re: Linear programming - express or/if then... constraints
Posted: Jul 12, 2009 6:26 AM, by: Robert Israel
barkertj <barkertj02@gmail.com> writes: > > On Jun 11, 3:01æam, Robert Israel > <isr...@math.MyUniversitysInitials.ca> wrote: > > > > > ...

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12) Re: Matrix inversion (matrix of matrices)
Posted: Jun 12, 2009 6:09 AM, by: Robert Israel
Eric Shamay <eric.shamay@gmail.com> writes: > > An NxN matrix, 'T', is a "super-matrix" whose elements are all 3x3 > scalar matrices. Thus, if ...

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13) Re: arbitrarily large boxes of non-primitive vectors
Posted: Dec 28, 2008 4:28 AM, by: Robert Israel
> A vector (a,b) in Z^2 (integer lattice) is said to be prmitive if gcd > (a,b)=1. The question is: do there exist arbitrarily large boxes of > non-primitive vectors? More formally: is the following ...

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14) Re: about this equation y''(t)+my'=ny^2
Posted: Dec 11, 2008 5:56 AM, by: Robert Israel
wydgeometry@gmail.com writes: > > can you give me any information of this equation? > y''(t)+my'=ny^2 > > where y'=dy/dt , y"=d^2(y)/dt^2 ...

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15) Re: Matrix Equation XX^TAXX^T=B
Posted: Dec 8, 2008 7:39 PM, by: Robert Israel
simon <Simon.SCh.000@gmail.com> writes: > Hi, everybody! I need to solve a matrix equation X*X^T*A*X*X^T=B, in > which X^T is the transpose ...

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