3 ms·

Sorry, I misread the blog post’s statement about infinitesimals, I thought it said surreals. How did Euler actually write his proof, do you know, or have a lin

• CogitoCogito 7y ago
  I usually hear people say that he wrote the algebraic one (i.e. the one that I'm saying is invalid). But I also have no idea where he supposedly wrote it so I can't verify it. For me it's more hearsay. By the way I wouldn't hold it against him if he did write the proof that way. I'm pretty certain all the logic/model theory that comes into play came long after his death. The surreal numbers certainly did.