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Add new skew hadamard matrices#34985

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vbraun merged 37 commits intosagemath:developsagemath/sage:developfrom MatteoCati:add_new_skew_hadamard_matricesMatteoCati/sage:add_new_skew_hadamard_matricesCopy head branch name to clipboardFeb 24, 2023

+1,000-324

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Commits on Feb 9, 2023

• Make fixed relative sets functions public

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  0fda29f

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• Add Spence skew hadamard matrix construction

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• Add skew SDS of size 37 and 43

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• Add more skew SDS

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• Refactor GS_skew_hadamard_smallcases

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• Add skew SDS for matrix of order 388

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• Add skew hadamard matrix of order 188

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• Add skew SDS of order 109, 145, 247

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• Fix whitespaces

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• Add skew Hadmard matrix order 324

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• Add 324 construction to skew hadamard function

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• Fix documentation for SDS

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• Add skew Hadamard matrix construction from good matrices

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• Add function for smallcases of good matrices

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• Add skew matrices from good matrices to general function

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• Add skew Hadamard matrix of order 236

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• Add skew Hadamard matrix of order 276

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• Add Whiteman construction for skew Hadamard matrix of order 340

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• Fix good matrices construction

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• Fix tests of construction of skew Hadamard matrices from good matrices

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• Fix trailing whitespaces in difference_family.py

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• Fix trailing whitespaces in hadamard_matrix.py

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• Fix code style for hadamard_matrix.py

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• Add skew sds for skew Hadamard matrix of order 292

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• Add reference for skew SDS of size 73

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• normalise_hadamard can make matrix skew-normalized

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• add function is_skew_hadamard_matrix

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• Fix is_skew_hadamard_matrix documentation

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• Fix docstring of GS_skew_hadamard_smallcases

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Commits on Feb 11, 2023

• Merge branch 'develop' into add_new_skew_hadamard_matrices

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Commits on Feb 13, 2023

• Merge branch 'develop' into add_new_skew_hadamard_matrices

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• Merge branch 'develop' into add_new_skew_hadamard_matrices

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• Fix docstrings

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• Add test for skew-normalizing matrix which is not skew

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Commits on Feb 15, 2023

• Merge branch 'develop' into add_new_skew_hadamard_matrices

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Commits on Feb 19, 2023

• replaced "Combining Caron"+c with one unicode character

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Commits on Feb 21, 2023

• Merge branch 'develop' into add_new_skew_hadamard_matrices

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