abstract nonsense

名词 n.
中文释义

英文释义

名词 n.
  1. Details which are straightforward but so tedious that an author or lecturer would rather skip them (especially those of a category theoretical nature). humorous,uncountable
  2. Details which involve diagram chasing. humorous,uncountable
    — ³Lang’s Algebra [Lan02, p. 759] supports the general consensus that this was not intended as an epithet: In the forties and fifties (mostly in the works of Cartan, Eilenberg, MacLane, and Steenrod, see [CE56]), it was realized that there was a systematic way of developing certain relations of linear algebra, depending only on fairly general constructions which were mostly arrow-theoretic, and were affectionately called abstract nonsense by Steenrod.
  3. Category theory in general. humorous,uncountable
  4. Used other than figuratively or idiomatically: see abstract, nonsense. uncountable

词源

Coined by Norman Steenrod, popularized by Serge Lang.
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