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2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry book bundles calculus categorical categories category category-theory chern-weil-theory cohesion cohesive-homotopy-type-theory cohomology colimits combinatorics complex complex-geometry computable-mathematics computer-science constructive cosmology definitions deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched fibration foundation foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry graph graphs gravity grothendieck group group-theory harmonic-analysis higher higher-algebra higher-category-theory higher-differential-geometry higher-geometry higher-lie-theory higher-topos-theory homological homological-algebra homotopy homotopy-theory homotopy-type-theory index-theory integration integration-theory k-theory lie-theory limits linear linear-algebra locale localization logic mathematics measure-theory modal modal-logic model model-category-theory monad monads monoidal monoidal-category-theory morphism motives motivic-cohomology nlab noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory pages pasting philosophy physics pro-object probability probability-theory quantization quantum quantum-field quantum-field-theory quantum-mechanics quantum-physics quantum-theory question representation representation-theory riemannian-geometry scheme schemes set set-theory sheaf simplicial space spin-geometry stable-homotopy-theory stack string string-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topological topology topos topos-theory tqft type type-theory universal variational-calculus

1. • CommentRowNumber1.
   • CommentAuthornLab edit announcer
   • CommentTimeMay 18th 2025
   • PermaLink
   Author: nLab edit announcer
   Format: MarkdownItexstarting disambiguation page for "evil" in mathematics Abe <a href="https://ncatlab.org/nlab/revision/evil/1">v1</a>, <a href="https://ncatlab.org/nlab/show/evil">current</a>

   starting disambiguation page for “evil” in mathematics

   Abe

   v1, current

2. • CommentRowNumber2.
   • CommentAuthorUrs
   • CommentTimeMay 18th 2025
   • (edited May 18th 2025)
   • PermaLink
   Author: Urs
   Format: MarkdownItexI looked up why the term "evil number" was chosen. Apparently meant to be a pun on "even", with "odious" a pun on "odd". Would be good to add this info to the entry, for clarification, since readers will wonder. (Because that's how it goes with nonsensical yet attention-grabbing terminology: It takes attention away from the subject matter that it means to name.) [Edit: Sorry, should have posted this under *[[evil number]]*)

   I looked up why the term “evil number” was chosen. Apparently meant to be a pun on “even”, with “odious” a pun on “odd”.

   Would be good to add this info to the entry, for clarification, since readers will wonder.

   (Because that’s how it goes with nonsensical yet attention-grabbing terminology: It takes attention away from the subject matter that it means to name.)

   [Edit: Sorry, should have posted this under evil number)

3. • CommentRowNumber3.
   • CommentAuthorDean
   • CommentTimeMay 20th 2025
   • PermaLink
   Author: Dean
   Format: MarkdownItexThis article is an ambiguation.

   This article is an ambiguation.