George Cantor

George Cantor was a mathematician who developed set theory and explored different sizes of infinity. He discovered that some infinite sets, like the natural numbers (1, 2, 3, ...), are countably infinite, while others, like the points on a line, are uncountably infinite—meaning they are a larger type of infinity. Cantor’s work revolutionized our understanding of infinity, showing that infinities can have different magnitudes. His ideas laid the foundation for much of modern mathematics and helped us better comprehend the infinite structures underlying math and logic.