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mattbaker.blog
| | susam.net
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| | [AI summary] The article explains the mathematical properties of fields, demonstrating that a field has only two ideals—{0} and the field itself—and that a commutative ring with only these ideals must be a field.
| | nhigham.com
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| | The Cayley-Hamilton Theorem says that a square matrix $LATEX A$ satisfies its characteristic equation, that is $latex p(A) = 0$ where $latex p(t) = \det(tI-A)$ is the characteristic polynomial. This statement is not simply the substitution ``$latex p(A) = \det(A - A) = 0$'', which is not valid since $latex t$ must remain a scalar...
| | ncatlab.org
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| | limited.systems
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| An introduction to some powerful functional programming techniques in Raku and Python.