Raffaele Carlone

145 reputation

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	145 reputation	bio	website		visits	member for	1 year, 1 month
5 badges		location			seen	Jul 18 '12 at 14:26

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May 29	comment	Inverse of a large sparse Hermitian block matrix in fact i am using your same cpu configuration and the result is not coming out.
May 29	comment	Inverse of a large sparse Hermitian block matrix @SjoerdC.deVries if you can please send me the computation of the inverse at my address ozellus@gmail.com. Thank you
May 28	awarded	Commentator
May 28	comment	Inverse of a large sparse Hermitian block matrix OutM[M_, [Delta]_] := ArrayFlatten[( { {M, [Delta]}, {-[Delta], M} } )];
May 28	revised	Inverse of a large sparse Hermitian block matrix added 1115 characters in body
May 28	comment	Inverse of a large sparse Hermitian block matrix i wrote the structure again. When I raise up the rank of this kind of matrices mathematica is not able to perform the inverse. I need some tip in order to use the sparsity....
May 28	revised	Inverse of a large sparse Hermitian block matrix added 1115 characters in body
May 28	revised	Inverse of a large sparse Hermitian block matrix added 1387 characters in body
May 28	asked	Inverse of a large sparse Hermitian block matrix
May 14	awarded	Nice Question
May 14	comment	Constructing a symbolic Hermitian matrix @Jeans, in fact if I try a decomposition the answer is the following CholeskyDecomposition::herm: The matrix {{h[1,1],h[1,2],h[1,3]},{Conjugate[h[1,2]],h[2,2],h[2,3]},{Conjugate[h[1,3]],Con‌jugate[h[2,3]],h[3,3]}} is not Hermitian or real and symmetric. >>. It is not necessary to test if the matrix is symmetric but I need to use this decomposition and it works only if Mathematica feels one hermitian matrix (also positive)
May 13	comment	Constructing a symbolic Hermitian matrix thank you! It works.
May 13	asked	Constructing a symbolic Hermitian matrix
May 8	accepted	Filter a list generated with Tuples
May 8	comment	Filter a list generated with Tuples I am not able to find celtschk answer. Where is it?
May 8	comment	Filter a list generated with Tuples Thank you Rojo. It works after you made the Tuples command. I need something that can exclude the generation of such elemends during the execution of the Tuples command
May 8	comment	Filter a list generated with Tuples I need the ordered list of elements. {2,1,3,4,5,6,7,8} is not the same of {1,2,3,4,5,6,7,8}
May 8	asked	Filter a list generated with Tuples
Apr 19	comment	Adding rules to permutations Thank you. I simplified my query and after that I need a permutation in block of four elements. For example if range is 8 {1,2,3,4,5,6,7,8} I need to combine only the permutations of {1,2,3,4} and {5,6,7,8}. In this case with range 64 the number of permutation is 4!^(16). Quite an astronomical number but better than 5^64. Any suggestion?
Apr 18	awarded	Scholar