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{c}
{title2=Every natural number is a sum of four squares}
{title2=1770}
{wiki}


Lagrange's four-square theorem

{wiki=Lagrange's_four-square_theorem}

Lagrange's four-square theorem is a result in number theory that states that every natural number can be expressed as the sum of four integer squares.


Lagrange's four-square theorem (Every natural number is a sum of four squares, 1770)

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Lagrange's four-square theorem (Every natural number is a sum of four squares, 1770)

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