Who is Georg Cantor?

Georg Cantor was a mathematician who figured out how to count infinite things, like never-ending numbers.

Imagine you have two boxes of candy. One has red candies and the other has blue candies. If you can pair each red candy with a blue one so that none are left over, then both boxes have the same number of candies, even if there are a lot of them! That's what Georg Cantor did, but with infinite collections.

Cantor showed that some infinities are bigger than others. It’s like having a bag of marbles and another bag of jellybeans. If you can match each marble to a jellybean perfectly, they have the same size of infinity. But if one bag has more stuff, even if both are infinite, then it has a bigger infinity.

He used special symbols for these ideas, like the letter ℵ (called "aleph"), which is kind of like a fancy way to say “a type of infinity.”

Cantor’s thinking was so clever that it helped solve real problems, like imagining a hotel with an infinite number of rooms. Even if every room is full, you can still make space for more guests! That's the infinite hotel idea.

So Georg Cantor didn’t just play with numbers, he played with how big things can be, even when they’re never-ending.