Not signed in (Sign In)

A discussion forum about contributions to the nLab wiki and related areas of mathematics, physics, and philosophy.

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

2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry beauty bundle bundles calculus categorical categories category category-theory chern-weil-theory cohesion cohesive-homotopy-type-theory cohomology colimits combinatorics comma complex-geometry computable-mathematics computer-science constructive cosmology deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched etcs fibration 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 lie-theory limits linear linear-algebra locale localization logic manifolds mathematics measure measure-theory modal modal-logic model model-category-theory 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 string string-theory subobject superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory type type-theory universal variational-calculus

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

If you want to take part in these discussions either sign in now (if you have an account), apply for one now (if you don't).

- Discussion Type
- discussion topic1-category equipped with relations
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Sep 13th 2021

- Discussion Type
- discussion topicHammock Localization
- Category Mathematics, Physics & Philosophy
- Started by mrmuon
- Comments 4
- Last comment by Dmitri Pavlov
- Last Active Sep 13th 2021

- Discussion Type
- discussion topiclinear logic
- Category Latest Changes
- Started by Mike Shulman
- Comments 22
- Last comment by nLab edit announcer
- Last Active Sep 13th 2021

- Discussion Type
- discussion topicG-CW complex
- Category Latest Changes
- Started by Urs
- Comments 11
- Last comment by Urs
- Last Active Sep 13th 2021

- Discussion Type
- discussion topicEL-∞ algebra
- Category Latest Changes
- Started by Luigi
- Comments 1
- Last comment by Luigi
- Last Active Sep 13th 2021

- Discussion Type
- discussion topicπ-Kan condition
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 13th 2021

- Discussion Type
- discussion topicIntroduction to Topology -- 2
- Category Latest Changes
- Started by nLab edit announcer
- Comments 6
- Last comment by nLab edit announcer
- Last Active Sep 13th 2021

- Discussion Type
- discussion topicPawel Sobocinski
- Category Latest Changes
- Started by RodMcGuire
- Comments 1
- Last comment by RodMcGuire
- Last Active Sep 12th 2021

- Discussion Type
- discussion topicsheaf of meromorphic functions
- Category Latest Changes
- Started by Urs
- Comments 5
- Last comment by Urs
- Last Active Sep 12th 2021

- Discussion Type
- discussion topicMaster course on algebraic stacks
- Category Latest Changes
- Started by nLab edit announcer
- Comments 2
- Last comment by Dmitri Pavlov
- Last Active Sep 12th 2021

- Discussion Type
- discussion topiccovariant derivative
- Category Latest Changes
- Started by Urs
- Comments 5
- Last comment by Dmitri Pavlov
- Last Active Sep 11th 2021

- Discussion Type
- discussion topicadhesive category
- Category Latest Changes
- Started by Mike Shulman
- Comments 3
- Last comment by nLab edit announcer
- Last Active Sep 11th 2021

- Discussion Type
- discussion topicclassifying topos
- Category Latest Changes
- Started by Urs
- Comments 56
- Last comment by JonasFrey
- Last Active Sep 11th 2021

- Discussion Type
- discussion topicJoachim Kock
- Category Latest Changes
- Started by David_Corfield
- Comments 2
- Last comment by Tim_Porter
- Last Active Sep 11th 2021

- Discussion Type
- discussion topicAdjointness for 2-Categories
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by David_Corfield
- Last Active Sep 11th 2021

- Discussion Type
- discussion topicfour-colour theorem
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by David_Corfield
- Last Active Sep 11th 2021

- Discussion Type
- discussion topicApplication of Karoubian envelope in constructions in K-theory
- Category nLab General Discussions
- Started by IngoD
- Comments 1
- Last comment by IngoD
- Last Active Sep 10th 2021

- Discussion Type
- discussion topic2-periodic sphere spectrum
- Category Latest Changes
- Started by David_Corfield
- Comments 7
- Last comment by David_Corfield
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicinter-universal Teichmüller theory
- Category Latest Changes
- Started by Urs
- Comments 142
- Last comment by DavidRoberts
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicArnold conjecture
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicsymplectic geometry
- Category Latest Changes
- Started by David_Corfield
- Comments 2
- Last comment by Urs
- Last Active Sep 10th 2021

- Discussion Type
- discussion topiclattice ordered group
- Category Latest Changes
- Started by Tim_Porter
- Comments 5
- Last comment by Tim_Porter
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicsifted (infinity,1)-colimit
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicsifted (infinity,1)-category
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicnlab down
- Category nLab Technical Matters
- Started by DavidRoberts
- Comments 28
- Last comment by Urs
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicresiduated lattice
- Category Latest Changes
- Started by Tim_Porter
- Comments 11
- Last comment by Tim_Porter
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicpartially ordered dagger-category
- Category Latest Changes
- Started by Tim_Porter
- Comments 2
- Last comment by Tim_Porter
- Last Active Sep 10th 2021

- Discussion Type
- discussion topicKaroubian category
- Category Latest Changes
- Started by adeelkh
- Comments 17
- Last comment by Guest
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicpasting law for pullbacks
- Category Latest Changes
- Started by Tobias Fritz
- Comments 3
- Last comment by Urs
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicresidual
- Category Latest Changes
- Started by varkor
- Comments 7
- Last comment by Tim_Porter
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicJean-Pierre Quadrat
- Category Latest Changes
- Started by Tim_Porter
- Comments 1
- Last comment by Tim_Porter
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicmax-plus algebra
- Category Latest Changes
- Started by Tim_Porter
- Comments 3
- Last comment by Tim_Porter
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicidempotent semiring
- Category Latest Changes
- Started by Daniel Luckhardt
- Comments 7
- Last comment by Tim_Porter
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicresiduated idempotent semiring
- Category Latest Changes
- Started by Tim_Porter
- Comments 2
- Last comment by Tim_Porter
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicStéphane Gaubert
- Category Latest Changes
- Started by Tim_Porter
- Comments 2
- Last comment by Tim_Porter
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicresiduated morphism
- Category Latest Changes
- Started by Tim_Porter
- Comments 1
- Last comment by Tim_Porter
- Last Active Sep 9th 2021

- Discussion Type
- discussion topicuniversal equivariant PU(H)-bundle
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Sep 8th 2021

- Discussion Type
- discussion topicJean-Eric Pin
- Category Latest Changes
- Started by Tim_Porter
- Comments 1
- Last comment by Tim_Porter
- Last Active Sep 8th 2021

- Discussion Type
- discussion topicImre Simon
- Category Latest Changes
- Started by Tim_Porter
- Comments 1
- Last comment by Tim_Porter
- Last Active Sep 8th 2021

- Discussion Type
- discussion topicMark V. Lawson
- Category Latest Changes
- Started by Tim_Porter
- Comments 1
- Last comment by Tim_Porter
- Last Active Sep 8th 2021

- Discussion Type
- discussion topicexponential object
- Category Latest Changes
- Started by Urs
- Comments 23
- Last comment by Tim_Porter
- Last Active Sep 8th 2021

- Discussion Type
- discussion topicmonoidal monad
- Category Latest Changes
- Started by Todd_Trimble
- Comments 11
- Last comment by Richard Williamson
- Last Active Sep 8th 2021

- Discussion Type
- discussion topicinternal hom
- Category Latest Changes
- Started by Urs
- Comments 23
- Last comment by varkor
- Last Active Sep 7th 2021

- Discussion Type
- discussion topicDavid Gale
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 7th 2021

- Discussion Type
- discussion topicNobuo Yoneda
- Category Latest Changes
- Started by Dmitri Pavlov
- Comments 2
- Last comment by Urs
- Last Active Sep 7th 2021

- Discussion Type
- discussion topicGrothendieck toposes as bridges
- Category Mathematics, Physics & Philosophy
- Started by Korman
- Comments 8
- Last comment by OliviaCaramello
- Last Active Sep 6th 2021

- Discussion Type
- discussion topicrepresentation theory
- Category Latest Changes
- Started by Urs
- Comments 5
- Last comment by Urs
- Last Active Sep 6th 2021

- Discussion Type
- discussion topiccrossed homomorphism
- Category Latest Changes
- Started by Urs
- Comments 35
- Last comment by Urs
- Last Active Sep 6th 2021

- Discussion Type
- discussion topicproton radius problem
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 6th 2021

- Discussion Type
- discussion topicD=3 N=4 super Yang-Mills theory
- Category Latest Changes
- Started by Urs
- Comments 7
- Last comment by Urs
- Last Active Sep 6th 2021

- Discussion Type
- discussion topicuniversal spacetime
- Category Latest Changes
- Started by Urs
- Comments 4
- Last comment by Urs
- Last Active Sep 6th 2021

- Discussion Type
- discussion topiclens (in computer science)
- Category Latest Changes
- Started by David_Corfield
- Comments 47
- Last comment by RodMcGuire
- Last Active Sep 5th 2021

- Discussion Type
- discussion topicpro-object
- Category Latest Changes
- Started by Tim_Porter
- Comments 30
- Last comment by Tim_Porter
- Last Active Sep 5th 2021

- Discussion Type
- discussion topiccentralizer
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Sep 4th 2021

- Discussion Type
- discussion topicAndrew Brooke-Taylor
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 4th 2021

- Discussion Type
- discussion topicCategories for the Working Mathematician
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 4th 2021

- Discussion Type
- discussion topicAbstract and Concrete Categories
- Category Latest Changes
- Started by DavidRoberts
- Comments 5
- Last comment by Urs
- Last Active Sep 4th 2021

- Discussion Type
- discussion topiccoproduct
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Sep 4th 2021

- Discussion Type
- discussion topicterminal object
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 4th 2021

- Discussion Type
- discussion topiccoequalizer
- Category Latest Changes
- Started by Urs
- Comments 5
- Last comment by Urs
- Last Active Sep 4th 2021