Basic Mathematics by Serge Lang - 3.1 Real numbers: Addition and subtraction (Basic Mathematics)

It's time to embrace the full set of numbers that integers and rationals point us to: the reals. Don't let the name intimidate you: it's just a name. We'll review the properties of addition and multiplication with regards to real numbers. Please don't skip this homework assignment. It's a great experiment to think about what it means to be a complete set of numbers. Support Real Physics by buying the book through this Amazon affiliate link: https://amzn.to/2I5yIHr Here's my Patreon account if you want to give me money: https://www.patreon.com/realphysics Other ways to support Real Physics: https://youtu.be/44nldGgJCiw Playlist: https://www.youtube.com/playlist?list=PLMcpDl1Pr-viA25VUkHNmcUkWx9usPgyb Thank you!