Assertion: infinitesimal | /r/HasProperty | acceptable
Facets:
value: by contemporary standards of rigor
type: OTHER
Source sentences:
text: And then in 1960 Abraham Robinson founda way to provide a rigorous foundations for infinitesimals and thus infinitesimals were acceptable, although not exactly welcome, again in mathematical discourse.
text: In the 1960s, building upon earlier work by Edwin Hewitt and Jerzy Łoś, Abraham Robinson developed mathematical explanations for Leibniz's infinitesimals that were acceptable by contemporary standards of rigor, and developed nonstandard analysis based on these ideas.