Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

• Username
• Password
• Remember me

• Sign in using OpenID
  
  
• Remember me

• Forgot your password?
• Apply for membership

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 nforum 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 topology topos topos-theory tqft type type-theory universal variational-calculus

1. • CommentRowNumber1.
   • CommentAuthorlentic catachresis
   • CommentTimeJun 30th 2016
   • PermaLink
   Author: lentic catachresis
   Format: MarkdownItexI have posted [the following question](http://mathoverflow.net/questions/243394/coherence-theorem-for-symmetric-lax-monoidal-functors) on MO. Since it is very much in the scope of the nLab, I'm linking to it here, in the event that there are some category theorists wandering around here but not there. I have skimmed through Todd Trimble's suggestion, but I haven't found the result... According to the preface to the book where the article is, and to the introduction to the article, a coherence theorem of the kind "everything in sight commutes" is false, and an easy counterexample is given; however, I believe that example is not hidden in my two statements.

   I have posted the following question on MO.

   Since it is very much in the scope of the nLab, I’m linking to it here, in the event that there are some category theorists wandering around here but not there.

   I have skimmed through Todd Trimble’s suggestion, but I haven’t found the result… According to the preface to the book where the article is, and to the introduction to the article, a coherence theorem of the kind “everything in sight commutes” is false, and an easy counterexample is given; however, I believe that example is not hidden in my two statements.