Waring's Problem -- from Wolfram MathWorld

Jacobi's four-square theorem - Wikipedia

SOLVED: Theorem 8.35 (Lagrange's Four-Square Theorem) then n can be expressed as the sum If n is a number; of four squares: natural lattice A in 4-space is a set of the

Lagrange's four-square theorem

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)

Square Number Definition & Meaning

Lagrange's Four-Square Theorem Seen Using Polygons and Lines

Lagrange's Four Squares Theorem

Four Square Theorem - Quaternions, PDF, Prime Number

PPT - Waring's Problem PowerPoint Presentation, free download - ID:4504701

Lagrange's Four-Square Theorem by Julian TSE