User talk:Username12321

Welcome!
Hello Username12321! Welcome to Wikipedia! Thank you for your contributions to this free encyclopedia. I hope you like the place and decide to stay. If you you need any help, check out Getting Help below, ask me on my talk page, or place   on your talk page and ask your question there. Below are some useful links to facilitate your involvement. Please remember to sign your name on talk pages by clicking or using four tildes ( ~ ); this will automatically produce your name and the date. Finally, please do your best to always fill in the edit summary field. Happy editing!  Netsnipe  ►  15:37, 3 June 2008 (UTC)

division by zero
Hi, Your comment about infinitesimals, complex numbers, and quantum mechanics are interesting, and I can offer further insight, though I am a little busy right now. I just wanted to point out that your point of view may be at variance with that of, for instance, H. Jerome Keisler as expressed in his published textbook Elementary calculus. Katzmik (talk) 08:14, 1 December 2008 (UTC)