One (number) 1 (number) One is the integer representing a single unit. This article summarizes its mathematical role as the multiplicative identity, its historical notation, and common uses and distinctio…
Arithmetic: fundamentals, operations, history, education, and applications Arithmetic Arithmetic is the branch of mathematics that studies numbers and basic operations (addition, subtraction, multiplication, division), number types, methods, history, learning, and e…
Base (mathematics): radix, positional systems, and common numeral systems Base (mathematics) A mathematical base (radix) is the number of distinct digits in a positional numeral system. This article explains definitions, notation, history, examples (binary, decimal, hexade…
Bertrand's postulate (Bertrand–Chebyshev theorem) Bertrand's postulate A classical result in number theory asserting that for every integer n>1 there is at least one prime p with n
