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Results tagged with matrices
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user 27829
Questions where the notion matrix has an important or crucial role (for the latter, note the tag matrix-theory for potential use). Matrices appear in various parts of mathematics, and this tag is typically combined with other tags to make the general subject clear, such as an appropriate top-level tag ra.rings-and-algebras, co.combinatorics, etc. and other tags that might be applicable. There are also several more specialized tags concerning matrices.
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Almost Hadamard matrices
Dinitz has a section for "Sequence Correlation" within Chapter "Hadamard Matrices and Related Designs." … Also, this is somewhat trivial, but your method of adding/deleting columns works for partial Hadamard matrices. …
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