Conjugation or conjugate may refer to:
Look up
conjugation in Wiktionary, the free dictionary.
- Complex conjugation, the change of sign of the imaginary part of a complex number
- Conjugate (square roots), the change of sign of a square root in an expression
- Conjugate element (field theory), a generalization of the preceding conjugations to roots of a polynomial of any degree
- Conjugate transpose, the complex conjugate of the transpose of a matrix
- Harmonic conjugate in complex analysis
- Conjugate (graph theory), an alternative term for a line graph, i.e. a graph representing the edge adjacencies of another graph
- In group theory, various notions are called conjugation:
- Conjugate words in combinatorics; this operation on strings resembles conjugation in groups
- Isogonal conjugate, in geometry
- Conjugate gradient method, an algorithm for the numerical solution of particular systems of linear equations
- Conjugate points, in differential geometry
- Topological conjugation, which identifies equivalent dynamical systems
- Convex conjugate, the ("dual") lower-semicontinuous convex function resulting from the Legendre–Fenchel transformation of a "primal" function
- Conjugate prior, in Bayesian statistics, a family of probability distributions that contains a prior and the posterior distributions for a particular likelihood function (particularly for one-parameter exponential families)
- Conjugate pairing of probability distributions, in the Fourier-analytic theory of characteristic functions and statistical mechanics