Many other subjects are often considered parts of mathematics as well. Depending on specific undergraduate programs, a math major may or may not be required to take courses in these areas, but many of the same ideas are used in these subjects as in the others.
# Computer science: something about algorithmic complexity: maybe the fact that primality testing may be done in polynomial time?
# Computer science: How can Fourier transforms be used to multiply enormous numbers much faster than normal methods?
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