Especially in physics there are some types of equations that in their subfield are called master equations. Examples include the following:
in BV-BRST formalism the classical master equation is the condition that the refinement of an action functional to a function on its derived critical locus squares to 0 with respect to a certain graded Poisson-bracket. The quantum master equation is a deformation of this equation. See at BV-BRST formalism for details on all this.
Created on January 12, 2013 at 22:29:22. See the history of this page for a list of all contributions to it.