The infinity symbol is a mathematical symbol that represents an infinitely large number. After all, any number subtracted by itself is equal to zero, however infinity is not a real (rational) number. At first, you may think that infinity subtracted from infinity is equal to zero. The infinity symbol ($${\displaystyle \infty }$$, ∞, or in unicode ∞) is a mathematical symbol representing the concept of infinity. What does Infinity Minus Infinity Equal? Infinity Symbol. I am going to prove what infinity minus infinity really equals, and I think you will be surprised by the answer. But infinity does not do anything, it just is. Infinity is not "getting larger", it is already fully formed. An idea of something without an end. Infinity is not a real number. Sometimes people (including me) say it "goes on and on" which sounds like it is growing somehow. Why Infinity Plus One Isn't Bigger Than Infinity. After all, any number subtracted by itself is equal to zero, however infinity is not a real (rational) number. It is often denoted by the infinity symbol ∞. In algebraic geometry, the figure is called a lemniscate. Infinity is not a real number, it is an idea. After all, any number divided by itself is equal to one, however infinity is not a real or rational number. What does Infinity Divided by Infinity Equal? At first, you may think that infinity divided by infinity equals one. So let's get back to why that commercial with the guy … Infinity represents something that is boundless or endless, or else something that is larger than any real or natural number. Infinity cannot be measured. I am going to prove what infinity divided by infinity … The infinity symbol is written with the Lemniscate symbol: ∞ It represents an infinitely positive big number. At first, you may think that infinity subtracted from infinity is equal to zero.