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 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 limit 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 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 subobject superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory tqft 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 topicℵ
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by TobyBartels
- Last Active Oct 17th 2012

- Discussion Type
- discussion topicnatural deduction tables
- Category Latest Changes
- Started by Urs
- Comments 16
- Last comment by TobyBartels
- Last Active Oct 17th 2012

- Discussion Type
- discussion topicThick subcategories of quasicategories
- Category Mathematics, Physics & Philosophy
- Started by Jon Beardsley
- Comments 2
- Last comment by Mike Shulman
- Last Active Oct 17th 2012

- Discussion Type
- discussion topicvariational calculus
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Oct 17th 2012

- Discussion Type
- discussion topic"Mochizuki's proof of abc"
- Category Latest Changes
- Started by Todd_Trimble
- Comments 16
- Last comment by Mike Shulman
- Last Active Oct 16th 2012

- Discussion Type
- discussion topicidempotent complete (infinity,1)-category
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Oct 16th 2012

- Discussion Type
- discussion topicGoogle Analytics
- Category nLab Technical Matters
- Started by Mike Shulman
- Comments 7
- Last comment by Mike Shulman
- Last Active Oct 16th 2012

- Discussion Type
- discussion topicLax equation
- Category Latest Changes
- Started by zskoda
- Comments 5
- Last comment by Mike Shulman
- Last Active Oct 16th 2012

- Discussion Type
- discussion topicTwoVect
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by jamievicary
- Last Active Oct 15th 2012

- Discussion Type
- discussion topicLiouville integrability
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by zskoda
- Last Active Oct 15th 2012

- Discussion Type
- discussion topiclocally presentable category
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Oct 15th 2012

- Discussion Type
- discussion topicexchange structure
- Category Latest Changes
- Started by Tim_Porter
- Comments 4
- Last comment by TobyBartels
- Last Active Oct 14th 2012

- Discussion Type
- discussion topicFinite (co)limits in the absence of Choice
- Category Mathematics, Physics & Philosophy
- Started by DavidRoberts
- Comments 6
- Last comment by Mike Shulman
- Last Active Oct 13th 2012

- Discussion Type
- discussion topicLocal homeomorphisms of n-topoi
- Category Mathematics, Physics & Philosophy
- Started by DavidCarchedi
- Comments 19
- Last comment by DavidCarchedi
- Last Active Oct 13th 2012

- Discussion Type
- discussion topicdiagrams whose colimits are homotopy colimits
- Category Mathematics, Physics & Philosophy
- Started by Karol Szumiło
- Comments 3
- Last comment by Mike Shulman
- Last Active Oct 12th 2012

- Discussion Type
- discussion topicTorsor
- Category nLab General Discussions
- Started by Tim_Porter
- Comments 4
- Last comment by zskoda
- Last Active Oct 12th 2012

- Discussion Type
- discussion topicpractical foundations
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Oct 12th 2012

- Discussion Type
- discussion topicghost field
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Oct 12th 2012

- Discussion Type
- discussion topicmetric jet
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Oct 12th 2012

- Discussion Type
- discussion topicfunctional
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Oct 11th 2012

- Discussion Type
- discussion topicAll Pages Disabled
- Category nLab Technical Matters
- Started by Andrew Stacey
- Comments 8
- Last comment by Andrew Stacey
- Last Active Oct 11th 2012

- Discussion Type
- discussion topiclax vs oplax colimits
- Category Latest Changes
- Started by Mike Shulman
- Comments 4
- Last comment by Todd_Trimble
- Last Active Oct 11th 2012

- Discussion Type
- discussion topicleft adjoint of the nerve
- Category nLab General Discussions
- Started by Mike Shulman
- Comments 8
- Last comment by Urs
- Last Active Oct 11th 2012

- Discussion Type
- discussion topicBPTS instanton
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Oct 10th 2012

- Discussion Type
- discussion topichafnian
- Category Latest Changes
- Started by zskoda
- Comments 1
- Last comment by zskoda
- Last Active Oct 9th 2012

- Discussion Type
- discussion topicTor
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Oct 8th 2012

- Discussion Type
- discussion topiclocally free module
- Category Latest Changes
- Started by Urs
- Comments 5
- Last comment by Todd_Trimble
- Last Active Oct 8th 2012

- Discussion Type
- discussion topiccategory of modules
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Oct 8th 2012

- Discussion Type
- discussion topiccoherence theorem for monoidal bicategories
- Category Latest Changes
- Started by Mike Shulman
- Comments 2
- Last comment by Todd_Trimble
- Last Active Oct 7th 2012

- Discussion Type
- discussion topiccohesive models of SDG
- Category nLab General Discussions
- Started by Todd_Trimble
- Comments 8
- Last comment by Todd_Trimble
- Last Active Oct 6th 2012

- Discussion Type
- discussion topicFor Eric Forgy
- Category nLab General Discussions
- Started by Todd_Trimble
- Comments 4
- Last comment by Eric
- Last Active Oct 6th 2012

- Discussion Type
- discussion topiccoherence for bicategories with finite bilimits
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Oct 5th 2012

- Discussion Type
- discussion topicCategories of morphisms
- Category Mathematics, Physics & Philosophy
- Started by domenico_fiorenza
- Comments 4
- Last comment by Urs
- Last Active Oct 5th 2012

- Discussion Type
- discussion topicinstiki code for pullback diagrams?
- Category Diagrams
- Started by Urs
- Comments 11
- Last comment by Urs
- Last Active Oct 5th 2012

- Discussion Type
- discussion topicThe Wiki History of the Universe
- Category Mathematics, Physics & Philosophy
- Started by Urs
- Comments 125
- Last comment by Urs
- Last Active Oct 4th 2012

- Discussion Type
- discussion topicStrict pretopologies on 2-categories and anafunctors
- Category Mathematics, Physics & Philosophy
- Started by DavidRoberts
- Comments 18
- Last comment by DavidRoberts
- Last Active Oct 4th 2012

- Discussion Type
- discussion topiccomplex analytic space
- Category Latest Changes
- Started by Urs
- Comments 5
- Last comment by Urs
- Last Active Oct 3rd 2012

- Discussion Type
- discussion topicTerminology question - cartesian closed categories
- Category nLab General Discussions
- Started by Andrew Stacey
- Comments 6
- Last comment by Andrew Stacey
- Last Active Oct 2nd 2012

- Discussion Type
- discussion topicHilbert's theorem 90
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Oct 2nd 2012

- Discussion Type
- discussion topicanabelioids
- Category Mathematics, Physics & Philosophy
- Started by Tim_Porter
- Comments 6
- Last comment by Urs
- Last Active Oct 1st 2012

- Discussion Type
- discussion topiclocal systems and coefficients
- Category Latest Changes
- Started by ronniegpd
- Comments 4
- Last comment by ronniegpd
- Last Active Oct 1st 2012

- Discussion Type
- discussion topicempty context
- Category Latest Changes
- Started by Urs
- Comments 11
- Last comment by TobyBartels
- Last Active Oct 1st 2012

- Discussion Type
- discussion topicReplacing reCaptcha
- Category n-Forum
- Started by Andrew Stacey
- Comments 5
- Last comment by TobyBartels
- Last Active Oct 1st 2012

- Discussion Type
- discussion topicLooking for an old n-lab page on motivation for categories
- Category nLab
- Started by Goncalo Marques
- Comments 4
- Last comment by Urs
- Last Active Sep 29th 2012

- Discussion Type
- discussion topictopological ring
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Tim_Porter
- Last Active Sep 28th 2012

- Discussion Type
- discussion topicQFT on non-commutative spacetime
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 28th 2012

- Discussion Type
- discussion topic[Dedekind completion]
- Category Latest Changes
- Started by DavidRoberts
- Comments 9
- Last comment by Urs
- Last Active Sep 28th 2012

- Discussion Type
- discussion topicnatural deduction, logical frameworks, etc.
- Category nLab General Discussions
- Started by Mike Shulman
- Comments 9
- Last comment by TobyBartels
- Last Active Sep 28th 2012

- Discussion Type
- discussion topicmatter
- Category Latest Changes
- Started by Urs
- Comments 9
- Last comment by TobyBartels
- Last Active Sep 28th 2012

- Discussion Type
- discussion topicAbsolutely continuous measures
- Category Latest Changes
- Started by TobyBartels
- Comments 1
- Last comment by TobyBartels
- Last Active Sep 27th 2012

- Discussion Type
- discussion topicupper bound
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by TobyBartels
- Last Active Sep 27th 2012

- Discussion Type
- discussion topicminimal coupling
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 27th 2012

- Discussion Type
- discussion topicdivisible group
- Category Latest Changes
- Started by Urs
- Comments 6
- Last comment by Urs
- Last Active Sep 27th 2012

- Discussion Type
- discussion topicinjective module
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 27th 2012

- Discussion Type
- discussion topictelescope conjecture
- Category Latest Changes
- Started by Jon Beardsley
- Comments 1
- Last comment by Jon Beardsley
- Last Active Sep 27th 2012

- Discussion Type
- discussion topicautomorphism infinity-group
- Category Latest Changes
- Started by Urs
- Comments 9
- Last comment by Urs
- Last Active Sep 27th 2012

- Discussion Type
- discussion topichypothesis and conclusion
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Sep 26th 2012

- Discussion Type
- discussion topiccomposition
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Sep 26th 2012

- Discussion Type
- discussion topicgeometric fibre
- Category Latest Changes
- Started by Tim_Porter
- Comments 14
- Last comment by Tim_Porter
- Last Active Sep 25th 2012

- Discussion Type
- discussion topicLévy hierarchy
- Category Latest Changes
- Started by Mike Shulman
- Comments 5
- Last comment by Urs
- Last Active Sep 25th 2012