Discrete quantum computation and Lagrange's four-square theorem

LAGRANGE'S FOUR SQUARE THEOREM Theorems, Lagrange theorem, Number theory

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Euler's four-square identity

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Waring's Problem & Lagrange's Four-Square Theorem

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Lagrange and the four-square theorem - Archive ouverte HAL

Waring's Problem -- from Wolfram MathWorld

MathType - Lagrange's four-square theorem states that every natural number can be represented as the sum of four integer squares. Proved by Joseph Louis #Lagrange in 1770, it can be regarded as