homothety

n. 类似, 同位

发音

US

词形变化

homotheties 复数 homotheties

别名

homotethy

释义与例句

n.
  1. 1.

    An isotropic scaling transformation of an affine space with a single fixed point.

    数学
  2. 2.

    A homomorphism from a module M over a ring A to itself of the form ν:x↦ax for some fixed a∈A (especially when M=A; a is said to be the ratio of the homothety, by analogy with the geometric case).

词汇关系

名词

同义词 1

homothecy

上位词 5

map function mapping mathematical function single-valued function

词源

From Ancient Greek ὁμο- (homo-, “same”) + θέσις (thésis, “setting, placement, arrangement”).

来源：wiktionary