In mathematics, change of base can mean any of several things:
- Changing numeral bases, such as converting from base 2 (binary) to base 10 (decimal). This is known as base conversion.
- The logarithmic change-of-base formula, one of the logarithmic identities used frequently in algebra and calculus.
- The method for changing between polynomial and normal bases, and similar transformations, for purposes of coding theory and cryptography.
- Construction of a fibred product of schemes, in algebraic geometry.
Famous quotes containing the words change and/or base:
“To the sick the doctors wisely recommend a change of air and scenery.”
—Henry David Thoreau (1817–1862)
“What I often forget about students, especially undergraduates, is that surface appearances are misleading. Most of them are at base as conventional as Presbyterian deacons.”
—Muriel Beadle (b. 1915)