👉 Forever math, also known as transfinite arithmetic, is a branch of mathematics that extends the concept of numbers beyond the finite integers to include infinite sets and their properties. It was developed by Georg Cantor in the late 19th century to rigorously study infinity and compare the sizes of different infinite sets, known as cardinalities. In essence, it allows us to define operations like addition and multiplication for infinite numbers, such as the sum of countably infinite sets (like the natural numbers) being equal to a larger infinite cardinality, and to explore concepts like ordinal numbers that represent the order type of well-ordered sets. This framework helps us understand the structure and relationships within infinite sets, revealing surprising insights into the nature of infinity itself.