Mathematics FAQs


What Is a Tensor?

Let me start with a counter-question. What is a number? Before…

Why Do People Say That 1 And .999 Are Equal?

Why do people say 1 and 0.999... are equal? Aren't they two different…

Proofs in Mathematics

This FAQ is about proofs. Proofs are central to mathematics,…

The History and Concept of the Number 0

The goal of this FAQ is to clear up the concept of 0 and specifically…