これで、ゼロ除算が大きな、広い世界を拓いているのは 歴然ですね。 The division by zero is uniquely and reasonably determined as 1/0=0/0=z/0=0 in the natural extensions of fractions. We have to change our basic ideas for our space and world
Relations of 0 and infinity
Hiroshi Okumura, Saburou Saitoh and Tsutomu Matsuura: http://www.e-jikei.org/Journals/JTSS/issue/archives/vol01_no01/10_A020/Camera%20ready%20manuscript_JTSS_A020.pdf
Division by Zero z/0 = 0 in Euclidean Spaces Hiroshi Michiwaki, Hiroshi Okumura and Saburou Saitoh