The degree to which two or more things diverge.
The process in which two or more populations accumulate genetic changes (mutations) through time.
the operator which maps a function F=(F₁, ... Fₙ) from a n-dimensional vector space to itself to the function ∑ᵢ₌₁ⁿ(∂F_i)/(∂x_i)
Duality; the condition of being double.
The belief that the world is ruled by a pair of antagonistic forces, such as good and evil; the belief that man has two basic natures, the physical and the spiritual.
The view that the world consists of, or is explicable in terms of, two fundamental principles, such as mind and matter or good and evil.