双そう対つい性せい

noun

duality

Mathematical term referring to a correspondence between two structures, such as in projective geometry or category theory.

• 射しゃ影えい幾き何か学がくでは、点てんと直ちょく線せんの双そう対つい性せいが成なり立たつ。

  In projective geometry, the duality of points and lines holds.