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May
27
revised How to make use of symmetric of sparse matrix to solve this kind of problem?
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May
27
asked How to make use of symmetric of sparse matrix to solve this kind of problem?
Mar
2
comment natural number reorder problem
thanks. i wish to get an opposite distance distribution compare to the list 1, 2, ..., N. For the list 1, 2, ..., N, the distances between i and i+j are larger when j is larger. Now I wish that the distance between i and i+j are smaller when j is larger. Is it possible to find such a list?
Mar
2
awarded  Commentator
Mar
2
comment natural number reorder problem
thanks. i mean maximize ALL the distance between elements i, i+1, elements i, i+2, ..., elements i, i+j, where 1<=i<=N, 1<=j<=N, and i+j<=N.
Mar
2
asked natural number reorder problem
Feb
1
awarded  Tumbleweed
Jan
14
awarded  Student
Jan
14
awarded  Editor
Jan
14
revised question about coordinate transformation
deleted 3 characters in body
Jan
14
asked question about coordinate transformation