conjugacy

conjugacy (countable and uncountable, plural conjugacies)

1. (mathematics) The condition or state of being conjugate.
   • 2012 May 25, Steven W. Nydick, The Wishart and Inverse Wishart Distributions:

     Because the gamma distribution is the conjugate prior for the precision parameter (${\displaystyle \tau =1/\sigma ^{2}}$) of a univariate normal distribution, the Wishart distribution (as its multivariate generalization) extends conjugacy to the multivariate normal distribution.

• conjugacy class

• conjugacy on Wikipedia.Wikipedia