(chemistry) Either of two equations that describe each half of a redox reaction

(mathematics) An equation defining a curve in terms of radius and angle.

(mathematics) A type of equation which includes a variable located in the exponent; for example, eˣ=1,.

(mathematics) An equation involving an ordered sequence of real numbers (a_nₙ₌₁ ᪲) and some of its differences, where the first difference is defined as 𝛥(a_n)=a_n+1-a_n, and the kᵗʰ difference is defined recursively as 𝛥ᵏ(a_n)=𝛥ᵏ⁻¹(a_n+1)-𝛥ᵏ⁻¹(a_n),.

(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).

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

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

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.

Alternative form of Price equation