(mathematics) finite sets of equations whose common solutions are sought

(mathematics) Any first-order ordinary differential equation that is quadratic in the unknown function.

plural of Schrödinger equation

Alternative form of Price equation

A covariance equation that provides a way to understand the effects that gene transmission and natural selection have on the proportion of genes within each new generation of a population.

An electrochemical equation that relates the reduction potential of a half-cell (or the total voltage, i.e. the electromotive force, of the full cell) at any point in time to the standard electrode potential, temperature, activity, and reaction quotient of the underlying reactions and species used.

plural of Nernst equation

plural of chemical equation

The discrepancy between two kinds of solar time: the apparent solar time, which directly tracks the motion of the Sun, and mean solar time, which tracks a theoretical "mean" Sun with noons 24 hours apart.

(mathematics) An integrable non-linear partial differential equation used in finding the exact solutions of Einstein's equations in the general theory of relativity.