Cayley–Hamilton theorem

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Science and technology

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What Wikipedia says

In linear algebra, the Cayley–Hamilton theorem (named after the mathematicians Arthur Cayley and William Rowan Hamilton) states that every square matrix over a commutative ring (such as the real or complex numbers or the integers) satisfies its own characteristic equation.

Excerpt from the Wikipedia article “Cayley–Hamilton theorem”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Herbert Beraud (1845–1896), Public domain, via Wikimedia Commons.