Discrete mathematics
- factor — factor function
- factorial — factorial function : product of the n first positive integers
- gcd — Greatest (positive) Common Divisor
- lcm — least common (positive) multiple of integers or of polynomials
- nchoosek — Computes binomial numbers (n,k) = numbers of combinations
- primes — lists of primes up to a given number
- rat — Floating point rational approximation