E98 -- Theorematum quorundam arithmeticorum demonstrationes

(The proofs of some arithmetic theorems)


Euler proves that the sum of two 4th powers can't be a 4th power, and that the difference of two distinct non-zero 4th powers can't be a 4th power and other such forms.

According to the records, it was presented to the St. Petersburg Academy on June 23, and August 16 (Additions), 1738.

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