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Solved Theorem 8.35 (Lagrange's Four-Square Theorem) If n is

Table 3 from Extended Lagrange's four-square theorem

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SOLVED: 8.35 (Lagrange's Four-Square Theorem) If n is a natural number, it can be expressed as the sum of four squares. A lattice in 4-space is a set of the form (x,y,z,w)

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number theory - The Four Square Theorem and Integral Apollonian Circle Packings, is there any connection? - Mathematics Stack Exchange

2023 Number Challenge: Find sum of four squares that is equal to 2023

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