I googled up some more context: https://mathoverflow.net/questions/226277/what-is-a-grossone https://mathoverflow.net/questions/226277/what-is-a-grossone http

I googled up some more context: https://mathoverflow.net/questions/226277/what-is-a-grossone https://mathoverflow.net/questions/226277/what-is-a-grossone https://math.stackexchange.com/questions/2497969/what-is-a-numerical-infinitesimal-and-humpty-dumpty-logic https://math.stackexchange.com/questions/2497969/what-is-a-n... Seems increasingly likely that this is crank mathematics.