(biology, genetics, cytology) The second of the two divisions of meiosis, a type of cell division.

(mathematics) (d²ʸ)/(dx²)-xy=0,,!, the simplest second-order linear differential equation with a turning point (a point where the character of the solutions changes from oscillatory to exponential).

plural of integral equation

plural of exponential equation

(mathematics) a set of equations required to be satisfied simultaneously or considered as a whole

(quantum mechanics) In nonrelativistic quantum mechanics, a partial differential equation that describes how the quantum state of some physical system changes with time.

(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

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.