cannonball problem

专有名词
中文释义

英文释义

专有名词
  1. The challenge of proving that the only solution of the Diophantine equation :∑ₙ₌₁ᴺn²=M²; with N > 1 is when N = 24 and M = 70.

词源

It can be visualized as the problem of taking a square arrangement of cannonballs on the ground and building a square pyramid out of them.
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