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René Descartes

The life of René Descartes - Analytical Geometry and Secret Life

Descartes' Rule of Signs

Determines the number of positive real roots of a polynomial.

\[ v - p = 2k \]

Polyhedral Formula

A precursor to Euler's formula for polyhedra.

\[ \sum (V - 2) = 2(F - 4) \]

Sources: https://mathshistory.st-andrews.ac.uk/Biographies/Descartes/

See Also