Ancient cultures had various ideas about the nature of infinity. Archimedes has been found to be “the first infinite series pdf free download rigorously address the science of infinity with infinitely large sets using precise mathematical proofs. In this work, two basic types of infinite numbers are distinguished.

European mathematicians started using infinite numbers and expressions in a systematic fashion in the 17th century. Mathematics is the science of the infinite. Infinity can be used not only to define a limit but as a value in the extended real number system. The domain of a complex-valued function may be extended to include the point at infinity as well. In the latter, infinitesimals are invertible, and their inverses are infinite numbers. 1 are distinct infinite numbers.

Cantor defined two kinds of infinite numbers: ordinal numbers and cardinal numbers. Cardinal numbers define the size of sets, meaning how many members they contain, and can be standardized by choosing the first ordinal number of a certain size to represent the cardinal number of that size. Cantor’s views prevailed and modern mathematics accepts actual infinity. These curves can be used to define a one-to-one correspondence between the points in the side of a square and those in the square. It is, for example, presumed impossible for any type of body to have infinite mass or infinite energy. One of the needs of any physical and scientific theory is to give usable formulas that correspond to or at least approximate reality. As an example, if any object of infinite gravitational mass were to exist, any usage of the formula to calculate the gravitational force would lead to an infinite result, which would be of no benefit since the result would be always the same regardless of the position and the mass of the other object.