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2-category 2-category-theory abelian-categories accessible adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry anomalies arithmetic arithmetic-geometry beauty bundles calculus categories category category-theory chern-simons-theory chern-weil-theory cohesion cohesive-homotopy-theory cohesive-homotopy-type-theory cohomology colimits combinatorics comma complex complex-geometry computable-mathematics computer-science constructive constructive-mathematics cosmology deformation-theory descent diagrams differential differential-cohomology differential-geometry duality education elliptic-cohomology enriched fibration finite foundations functional-analysis functor galois-theory gauge-theory gebra geometric-quantization geometry goodwillie-calculus graph gravity group-theory 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 infinity integration-theory internal-categories k-theory kan lie-theory limit limits linear linear-algebra locale localization logic manifolds mathematics measure-theory modal-logic model model-category-theory monoidal monoidal-category-theory morphism motives motivic-cohomology newpage nonassociative noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory 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 set set-theory sheaf simplicial space spin-geometry stable-homotopy-theory stack string string-theory subobject superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topological topology topos topos-theory tqft type type-theory universal web

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- Discussion Type
- discussion topicgroup monomorphisms in a topos
- Category nLab General Discussions
- Started by Todd_Trimble
- Comments 11
- Last comment by Todd_Trimble
- Last Active 3 days ago

- Discussion Type
- discussion topicequivariant_related_illustration20170619
- Category nLab General Discussions
- Started by Peter Heinig
- Comments 1
- Last comment by Peter Heinig
- Last Active 4 days ago

- Discussion Type
- discussion topicKan simplicial sets with explicit fillers: algebraic or functional?
- Category nLab General Discussions
- Started by bezem
- Comments 7
- Last comment by Peter Heinig
- Last Active 6 days ago

- Discussion Type
- discussion topiccategory of simple graphs with embeddings (proposed)
- Category nLab General Discussions
- Started by Peter Heinig
- Comments 21
- Last comment by Peter Heinig
- Last Active 7 days ago

- Discussion Type
- discussion topicCategories in which exponentiation distributes over addition
- Category nLab General Discussions
- Started by Richard Williamson
- Comments 20
- Last comment by Mike Shulman
- Last Active Jun 14th 2017

- Discussion Type
- discussion topicTechnical term for the category having morphism precisely the families of parallel morphisms?
- Category nLab General Discussions
- Started by Peter Heinig
- Comments 5
- Last comment by Todd_Trimble
- Last Active Jun 10th 2017

- Discussion Type
- discussion topicHow to call the full subcategory of convergent diagrams within a functor category?
- Category nLab General Discussions
- Started by Peter Heinig
- Comments 1
- Last comment by Peter Heinig
- Last Active Jun 10th 2017

- Discussion Type
- discussion topicStrictification of iso-fibrations up to homotopy
- Category nLab General Discussions
- Started by Richard Williamson
- Comments 20
- Last comment by Mike Shulman
- Last Active Jun 8th 2017

- Discussion Type
- discussion topicOpen morphisms of locales vs. topological spaces
- Category nLab General Discussions
- Started by IngoBlechschmidt
- Comments 6
- Last comment by IngoBlechschmidt
- Last Active Jun 1st 2017

- Discussion Type
- discussion topicbroken links to Mike's talks
- Category nLab General Discussions
- Started by Todd_Trimble
- Comments 3
- Last comment by Todd_Trimble
- Last Active May 30th 2017

- Discussion Type
- discussion topiclinear vs. total orders
- Category nLab General Discussions
- Started by Todd_Trimble
- Comments 3
- Last comment by Todd_Trimble
- Last Active May 21st 2017

- Discussion Type
- discussion topicA new version of Goldbach`s conjecture
- Category nLab General Discussions
- Started by Alireza_Badali
- Comments 7
- Last comment by Alireza_Badali
- Last Active May 21st 2017

- Discussion Type
- discussion topicA proof that the induction principle holds in a suitable type theory
- Category nLab General Discussions
- Started by JamesSmith
- Comments 5
- Last comment by JamesSmith
- Last Active May 15th 2017

- Discussion Type
- discussion topicopen maps
- Category nLab General Discussions
- Started by DavidRoberts
- Comments 6
- Last comment by Urs
- Last Active May 12th 2017

- Discussion Type
- discussion topiccompactum
- Category nLab General Discussions
- Started by Todd_Trimble
- Comments 9
- Last comment by Urs
- Last Active May 3rd 2017

- Discussion Type
- discussion topicExamples of (co)tensored or (co)powered enriched categories?
- Category nLab General Discussions
- Started by Bartek
- Comments 4
- Last comment by Todd_Trimble
- Last Active Apr 19th 2017

- Discussion Type
- discussion topictheory of sup-lattices in quasitoposes
- Category nLab General Discussions
- Started by Todd_Trimble
- Comments 3
- Last comment by Todd_Trimble
- Last Active Apr 19th 2017

- Discussion Type
- discussion topicReference for a characterization of cartesian monoidal categories
- Category nLab General Discussions
- Started by Bruno Stonek
- Comments 4
- Last comment by maxsnew
- Last Active Apr 14th 2017

- Discussion Type
- discussion topicDo we have the result on maps from compact to Hausdorff spaces?
- Category nLab General Discussions
- Started by Andrew Stacey
- Comments 4
- Last comment by Urs
- Last Active Apr 13th 2017

- Discussion Type
- discussion topicrationally acyclic and MO question.
- Category nLab General Discussions
- Started by Tim_Porter
- Comments 2
- Last comment by Urs
- Last Active Mar 30th 2017

- Discussion Type
- discussion topicPeter Freyd
- Category nLab General Discussions
- Started by Tim_Porter
- Comments 5
- Last comment by TobyBartels
- Last Active Jan 23rd 2017

- Discussion Type
- discussion topicnPOV on Complexity Theory?
- Category nLab General Discussions
- Started by SaalHardali
- Comments 4
- Last comment by Mike Shulman
- Last Active Jan 21st 2017

- Discussion Type
- discussion topicGalois groups
- Category nLab General Discussions
- Started by Mateo_Carmona_G
- Comments 1
- Last comment by Mateo_Carmona_G
- Last Active Jan 20th 2017

- Discussion Type
- discussion topicApproximate IVT
- Category nLab General Discussions
- Started by Richard Williamson
- Comments 131
- Last comment by Richard Williamson
- Last Active Jan 2nd 2017

- Discussion Type
- discussion topicGerbe (as a stack)
- Category nLab General Discussions
- Started by hilbertthm90
- Comments 5
- Last comment by Urs
- Last Active Dec 27th 2016

- Discussion Type
- discussion topicPoincarĂ© conjecture
- Category nLab General Discussions
- Started by Richard Williamson
- Comments 5
- Last comment by Richard Williamson
- Last Active Dec 23rd 2016

- Discussion Type
- discussion topicSimple question about the core of categories.
- Category nLab General Discussions
- Started by KeithEPeterson
- Comments 3
- Last comment by TobyBartels
- Last Active Dec 21st 2016

- Discussion Type
- discussion topicGLAV constraints
- Category nLab General Discussions
- Started by John Baez
- Comments 10
- Last comment by Todd_Trimble
- Last Active Dec 11th 2016

- Discussion Type
- discussion topicExamples/Theory of "Improvement"?
- Category nLab General Discussions
- Started by maxsnew
- Comments 4
- Last comment by maxsnew
- Last Active Dec 10th 2016

- Discussion Type
- discussion topicOvercategory
- Category nLab General Discussions
- Started by Bubbles
- Comments 45
- Last comment by Mike Shulman
- Last Active Dec 6th 2016