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In mathematics, homotopy theory is a systematic study of situations in which maps can come with homotopies between them. It originated as a topic in algebraic...

The export of cryptography is the transfer from one country to another of devices and technology related to cryptography. In the early days of the Cold...

In mathematics, a system of differential equations is a finite set of differential equations. Such a system can be either linear or non-linear. Also, such...