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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 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 sheaves 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.
   • CommentAuthorTobyBartels
   • CommentTimeSep 3rd 2012
   • PermaLink
   Author: TobyBartels
   Format: MarkdownItexThere are many pages in [category: foundational axiom](http://ncatlab.org/nlab/list/foundational+axiom), such as [[axiom of choice]]. But (as you can see if you check) they're not showing up! I don't know what's wrong.

   There are many pages in category: foundational axiom, such as axiom of choice. But (as you can see if you check) they’re not showing up! I don’t know what’s wrong.

2. • CommentRowNumber2.
   • CommentAuthorTobyBartels
   • CommentTimeSep 3rd 2012
   • PermaLink
   Author: TobyBartels
   Format: MarkdownItexTo see what *should* be in that category, try [this search](http://ncatlab.org/nlab/search?query=category%3A+foundational+axiom).

   To see what should be in that category, try this search.

3. • CommentRowNumber3.
   • CommentAuthorAndrew Stacey
   • CommentTimeSep 3rd 2012
   • PermaLink
   Author: Andrew Stacey
   Format: MarkdownItexCache bug? Try deleting the page from the cache.

   Cache bug? Try deleting the page from the cache.

4. • CommentRowNumber4.
   • CommentAuthorTobyBartels
   • CommentTimeSep 3rd 2012
   • PermaLink
   Author: TobyBartels
   Format: MarkdownItexI have no idea where my key is anymore to do that; but anyway, that can't be it. Not only should the page never have been empty like this, but it also doesn't show up as an existing category in the list of existing categories on any other category page. Unless somebody removed all of the pages from the category, then all of the category pages were cached, and then the pages were returned to the category (and some cache bug then occurred, not to mention a history bug because this didn't happen), then it's not the cache bug.

   I have no idea where my key is anymore to do that; but anyway, that can’t be it. Not only should the page never have been empty like this, but it also doesn’t show up as an existing category in the list of existing categories on any other category page. Unless somebody removed all of the pages from the category, then all of the category pages were cached, and then the pages were returned to the category (and some cache bug then occurred, not to mention a history bug because this didn’t happen), then it’s not the cache bug.

5. • CommentRowNumber5.
   • CommentAuthorTobyBartels
   • CommentTimeSep 3rd 2012
   • PermaLink
   Author: TobyBartels
   Format: MarkdownItexI've just edited five of the pages in the category, and now they show up on the list again. Also, the category shows up in the list of existing categories, so you may have to take my word for it that it didn't use to.

   I’ve just edited five of the pages in the category, and now they show up on the list again. Also, the category shows up in the list of existing categories, so you may have to take my word for it that it didn’t use to.

6. • CommentRowNumber6.
   • CommentAuthorAndrew Stacey
   • CommentTimeSep 3rd 2012
   • PermaLink
   Author: Andrew Stacey
   Format: MarkdownItexI did check the list and saw that it was empty. I have no explanation for it, though.

   I did check the list and saw that it was empty. I have no explanation for it, though.

7. • CommentRowNumber7.
   • CommentAuthorTobyBartels
   • CommentTimeSep 3rd 2012
   • PermaLink
   Author: TobyBartels
   Format: MarkdownItexAs I edit more, it's getting repopulated: up to 16 out of 30 now!

   As I edit more, it’s getting repopulated: up to 16 out of 30 now!

8. • CommentRowNumber8.
   • CommentAuthorTim_Porter
   • CommentTimeSep 3rd 2012
   • (edited Sep 3rd 2012)
   • PermaLink
   Author: Tim_Porter
   Format: MarkdownItexI have added some entries to [category: simplicial object](http://ncatlab.org/nlab/list/simplicial+object) to see what happened. It looks ok to me, but there was very little in that category before.

   I have added some entries to category: simplicial object to see what happened. It looks ok to me, but there was very little in that category before.