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