论文信息 - A Short Proof of Jacobi's Formula for the Number of Representations of an Integer as a Sum of Four Squares

A Short Proof of Jacobi's Formula for the Number of Representations of an Integer as a Sum of Four Squares

A short and elementary proof, and a finite-form generalization, are given of Jacobi's formula for the number of ways of writing an integer as a sum of four squares (that implies Lagrange's famous 1777 theorem.)

Doron Zeilberger | D. Zeilberger | G. Andrews | George Andrews | Shalsoh B. Ekhad

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