Question

Who wrote the Orders of Infinity?

Answer 1

Answer:

Georg Cantor developed a system of transfinite numbers, in which the first transfinite cardinal is aleph-null (ℵ0), the cardinality of the set of natural numbers.

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Answer 2

Answer:

Infinity (symbol: {\displaystyle \infty } \infty ) is a concept describing something without any bound, or something larger than any natural number. Philosophers have speculated about the nature of the infinite, for example Zeno of Elea, who proposed many paradoxes involving infinity, and Eudoxus of Cnidus, who used the idea of infinitely small quantities in his method of exhaustion. This idea is also at the basis of infinitesimal calculus.

At the end of 19th century, Georg Cantor introduced and studied infinite sets and infinite numbers, which are now an essential part of the foundation of mathematics.[1] For example, in modern mathematics, a line is commonly viewed as the set of all its points, and their infinite number (the cardinality of the line) is larger than the number of integers.[2] Thus the mathematical concept of infinity refines and extends the old philosophical concept. It is used everywhere in mathematics, even in areas such as combinatorics and number theory that may seem to have nothing to do with it. For example, Wiles's proof of Fermat's Last Theorem uses the existence of very large infinite sets.