Ignace Cantor

Ignace Cantor was a mathematician known for his work in set theory, particularly for developing the concept of different sizes or “cardinalities” of infinity. He showed that some infinities are larger than others—like the infinity of all natural numbers versus the infinity of real numbers, which is even bigger. His groundbreaking ideas helped shape modern mathematics by clarifying how infinite sets can be compared and understood, challenging the traditional view that infinity was just one limitless concept.