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Subspace vs Semisimple - What's the difference?

subspace | semisimple |

As a noun subspace

is (mathematics) a subset of a space which is a space in its own right or subspace can be (bdsm) the psychological state of the submissive or "bottom" during sadomasochistic activity.

As an adjective semisimple is

(mathematics|of a module) in which each submodule is a direct summand.

subspace

English

Etymology 1

Noun

(en noun)
  • (mathematics) A subset of a space which is a space in its own right.
  • (science fiction) Any (often unspecified) method of communicating faster than light.
  • Etymology 2

    (in sense of (submissive)), punning on the other etymology from (sub-).

    Noun

    (-)
  • (BDSM) The psychological state of the submissive or "bottom" during sadomasochistic activity.
  • * 2000 , Gloria G Brame, Come hither: a commonsense guide to kinky sex?
  • My problem, though, is that when he whips me, I resist going into subspace . He has to whip me for fifteen or twenty minutes before I even begin to feel any psychological effects.
  • * 2003 , Chelsea Shepard, Two Moons: Worthy of a Master Book One
  • When he was far gone into subspace , pain was enough to make him come.

    Coordinate terms

    * topspace

    semisimple

    English

    Adjective

    (-) (wikipedia semisimple)
  • (mathematics, of a module) In which each submodule is a direct summand.
  • (mathematics, of an algebra or ring)
  • (mathematics, of an operator or matrix) For which every invariant subspace has an invariant complement, equivalent to the minimal polynomial being squarefree.
  • (mathematics, of a Lie algebra) Being a direct sum of simple Lie algebras.
  • (mathematics, of an algebraic group) Being a linear algebraic group whose radical of the identity component is trivial.