duality

/d(j)uหหˆรฆlษชti/

IPA: /D UW0 AE1 L AH0 T IY0/

noun
  1. 1

    A classification into two subclasses or opposed parts.

  2. 2

    (projective geometry) The interchangeability of points and planes.

  3. 3

    The mathematical equivalence of two seemingly different theoretical descriptions of a physical system.

Synonyms

Source: https://en.wiktionary.org/wiki/duality