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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 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.
   • CommentAuthorTodd_Trimble
   • CommentTimeMay 23rd 2010
   • (edited May 23rd 2010)
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   Author: Todd_Trimble
   Format: MarkdownItexThere's a reference to this notion somewhere (maybe [[subsequential space]], I'd have to double-check), and a reference to Johnstone's paper, but it's not easy for me to access this paper. I'd be very grateful if someone would write out the definition.

   There’s a reference to this notion somewhere (maybe subsequential space, I’d have to double-check), and a reference to Johnstone’s paper, but it’s not easy for me to access this paper. I’d be very grateful if someone would write out the definition.

2. • CommentRowNumber2.
   • CommentAuthorMike Shulman
   • CommentTimeMay 23rd 2010
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   Author: Mike Shulman
   Format: MarkdownItexDo you mean the definition of the topos referred to in the title of Johnstone's article?

   Do you mean the definition of the topos referred to in the title of Johnstone’s article?

3. • CommentRowNumber3.
   • CommentAuthorTodd_Trimble
   • CommentTimeMay 23rd 2010
   • (edited May 23rd 2010)
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   Author: Todd_Trimble
   Format: MarkdownItexYes, that's right Mike. Sorry for not being clear.

   Yes, that’s right Mike. Sorry for not being clear.

4. • CommentRowNumber4.
   • CommentAuthorTodd_Trimble
   • CommentTimeMay 24th 2010
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   Author: Todd_Trimble
   Format: MarkdownItexA kind soul read this and sent me Johnstone's paper by email, so I no longer need help with the definition. I will write an article on topological topos shortly.

   A kind soul read this and sent me Johnstone’s paper by email, so I no longer need help with the definition. I will write an article on topological topos shortly.