The deduction that z/0 = 0, for any z, is based in Saitoh's geometric intuition
and it is currently applied in proof assistant technology, which are useful in
industry and in the military.

Isabelle が 私たちの原理、幾何学的な考察にあり、 既に広く 運用され、
それは既に 揺るがない という 事ですね。