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 galois-theory 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 nlab noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory pages pasting philosophy physics planar 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

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 topicThe Lab is back.
- Category nLab Technical Matters
- Started by TobyBartels
- Comments 8
- Last comment by TobyBartels
- Last Active Jan 28th 2010

- Discussion Type
- discussion topiccosimplicial simplicial abelian groups and rings
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Jan 28th 2010

- Discussion Type
- discussion topicbigrading on cohomology
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 28th 2010

- Discussion Type
- discussion topicCoo-rings
- Category Latest Changes
- Started by Urs
- Comments 4
- Last comment by zskoda
- Last Active Jan 27th 2010

- Discussion Type
- discussion topicprettifying cross-web links
- Category nLab Technical Matters
- Started by Mike Shulman
- Comments 62
- Last comment by TobyBartels
- Last Active Jan 25th 2010

- Discussion Type
- discussion topicBrown's Abstract Homotopy Theory and Generalized Sheaf Cohomology
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 25th 2010

- Discussion Type
- discussion topicde Rham space as derived free loop space
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 24th 2010

- Discussion Type
- discussion topicrelative cohomology
- Category Latest Changes
- Started by Urs
- Comments 9
- Last comment by TobyBartels
- Last Active Jan 23rd 2010

- Discussion Type
- discussion topicpretty-printed diagrams
- Category Diagrams
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 23rd 2010

- Discussion Type
- discussion topic+/
- Category nLab Technical Matters
- Started by Andrew Stacey
- Comments 1
- Last comment by Andrew Stacey
- Last Active Jan 22nd 2010

- Discussion Type
- discussion topicmotivic cohomology as stable oo-stack cohomology
- Category Latest Changes
- Started by Urs
- Comments 12
- Last comment by Urs
- Last Active Jan 21st 2010

- Discussion Type
- discussion topics
- Category Mathematics, Physics & Philosophy
- Started by zskoda
- Comments 26
- Last comment by TobyBartels
- Last Active Jan 21st 2010

- Discussion Type
- discussion topichypersimplex
- Category Latest Changes
- Started by zskoda
- Comments 2
- Last comment by zskoda
- Last Active Jan 21st 2010

- Discussion Type
- discussion topicinterval object: dendroidal version of path groupoid
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 19th 2010

- Discussion Type
- discussion topiccross-web inclusion
- Category nLab Technical Matters
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 19th 2010

- Discussion Type
- discussion topicquasicoherent oo-stack
- Category Latest Changes
- Started by Urs
- Comments 10
- Last comment by Urs
- Last Active Jan 18th 2010

- Discussion Type
- discussion topicsmooth natural numbers
- Category Latest Changes
- Started by Urs
- Comments 27
- Last comment by Urs
- Last Active Jan 18th 2010

- Discussion Type
- discussion topicCross links on my personal web
- Category nLab Technical Matters
- Started by Eric
- Comments 12
- Last comment by TobyBartels
- Last Active Jan 17th 2010

- Discussion Type
- discussion topicFredholm operator and K-theory
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 15th 2010

- Discussion Type
- discussion topiclecture notes
- Category Latest Changes
- Started by Urs
- Comments 6
- Last comment by Urs
- Last Active Jan 15th 2010

- Discussion Type
- discussion topicCategory Theory Problem on Right Adjoints
- Category Latest Changes
- Started by yellsap
- Comments 3
- Last comment by TobyBartels
- Last Active Jan 15th 2010

- Discussion Type
- discussion topicAccess denied
- Category nLab Technical Matters
- Started by Urs
- Comments 12
- Last comment by Urs
- Last Active Jan 15th 2010

- Discussion Type
- discussion topicPages with slashes in their names.
- Category nLab Technical Matters
- Started by TobyBartels
- Comments 17
- Last comment by TobyBartels
- Last Active Jan 14th 2010

- Discussion Type
- discussion topicnLab denial of service attack
- Category nLab Technical Matters
- Started by Andrew Stacey
- Comments 6
- Last comment by Urs
- Last Active Jan 14th 2010

- Discussion Type
- discussion topicNew page: [[relative point of view]]
- Category Latest Changes
- Started by TobyBartels
- Comments 4
- Last comment by zskoda
- Last Active Jan 14th 2010

- Discussion Type
- discussion topicweighted join of quasi-categories
- Category Latest Changes
- Started by domenico_fiorenza
- Comments 12
- Last comment by Mike Shulman
- Last Active Jan 14th 2010

- Discussion Type
- discussion topicSullivan differential forms
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 13th 2010

- Discussion Type
- discussion topicPolicy on Private Webs
- Category nLab Organisation
- Started by Andrew Stacey
- Comments 14
- Last comment by zskoda
- Last Active Jan 11th 2010

- Discussion Type
- discussion topiccocycle
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Jan 11th 2010

- Discussion Type
- discussion topicSEAR+epsilon is gone
- Category Mathematics, Physics & Philosophy
- Started by Harry Gindi
- Comments 5
- Last comment by Andrew Stacey
- Last Active Jan 11th 2010

- Discussion Type
- discussion topicWhitehead tower
- Category Latest Changes
- Started by Guest
- Comments 19
- Last comment by domenico_fiorenza
- Last Active Jan 10th 2010

- Discussion Type
- discussion topicinternal oo-groupoid
- Category Latest Changes
- Started by Urs
- Comments 4
- Last comment by domenico_fiorenza
- Last Active Jan 9th 2010

- Discussion Type
- discussion topic(infinity,2)-category
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 8th 2010

- Discussion Type
- discussion topicSieves and Descent
- Category Mathematics, Physics & Philosophy
- Started by Harry Gindi
- Comments 4
- Last comment by Urs
- Last Active Jan 8th 2010

- Discussion Type
- discussion topic2-fibration at codomain fibration
- Category Latest Changes
- Started by Guest
- Comments 3
- Last comment by zskoda
- Last Active Jan 8th 2010

- Discussion Type
- discussion topicEilenberg–Mac Lane shenanigans
- Category Latest Changes
- Started by TobyBartels
- Comments 3
- Last comment by Urs
- Last Active Jan 8th 2010

- Discussion Type
- discussion topicuniray group
- Category Latest Changes
- Started by Urs
- Comments 9
- Last comment by zskoda
- Last Active Jan 7th 2010

- Discussion Type
- discussion topicdifferential cohomology - nonabelian case
- Category Latest Changes
- Started by Urs
- Comments 4
- Last comment by Urs
- Last Active Jan 7th 2010

- Discussion Type
- discussion topicQuadratic Functions in Geometry, Topology,and M-Theory
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 7th 2010

- Discussion Type
- discussion topicnon-canonical isomorphisms
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Jan 7th 2010

- Discussion Type
- discussion topicRuby Update
- Category Lab Elf News
- Started by Andrew Stacey
- Comments 15
- Last comment by Eric
- Last Active Jan 7th 2010

- Discussion Type
- discussion topicover quasi-categories
- Category Latest Changes
- Started by domenico_fiorenza
- Comments 5
- Last comment by TobyBartels
- Last Active Jan 6th 2010

- Discussion Type
- discussion topicrn-Simons gerbe
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 6th 2010

- Discussion Type
- discussion topic"objects" and tools to compute them
- Category Mathematics, Physics & Philosophy
- Started by domenico_fiorenza
- Comments 8
- Last comment by Mike Shulman
- Last Active Jan 6th 2010

- Discussion Type
- discussion topicSimons-Sullivan structured bundle
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 6th 2010

- Discussion Type
- discussion topicitex and unicode
- Category Lab Elf News
- Started by Andrew Stacey
- Comments 3
- Last comment by Andrew Stacey
- Last Active Jan 6th 2010

- Discussion Type
- discussion topicspace
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by zskoda
- Last Active Jan 5th 2010

- Discussion Type
- discussion topicControl your braces!
- Category nLab Technical Matters
- Started by Andrew Stacey
- Comments 1
- Last comment by Andrew Stacey
- Last Active Jan 5th 2010

- Discussion Type
- discussion topichomotopy n-type
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 5th 2010

- Discussion Type
- discussion topicClassifying spaces and cohomology
- Category Mathematics, Physics & Philosophy
- Started by domenico_fiorenza
- Comments 23
- Last comment by Urs
- Last Active Jan 4th 2010

- Discussion Type
- discussion topicDifferential Graded (Noncommutative) Algebra of Whitney Forms
- Category Latest Changes
- Started by Eric
- Comments 2
- Last comment by Urs
- Last Active Jan 4th 2010

- Discussion Type
- discussion topicInstiki update
- Category Lab Elf News
- Started by Andrew Stacey
- Comments 2
- Last comment by Andrew Stacey
- Last Active Jan 4th 2010

- Discussion Type
- discussion topicregular and exact completion
- Category Latest Changes
- Started by Mike Shulman
- Comments 8
- Last comment by Todd_Trimble
- Last Active Jan 4th 2010

- Discussion Type
- discussion topicderivation and Kähler differential
- Category Latest Changes
- Started by Urs
- Comments 6
- Last comment by John Baez
- Last Active Jan 3rd 2010

- Discussion Type
- discussion topicfolk model structure on Cat
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Jan 1st 2010

- Discussion Type
- discussion topic[[weak factorization system on Set]]
- Category Latest Changes
- Started by TobyBartels
- Comments 1
- Last comment by TobyBartels
- Last Active Jan 1st 2010

- Discussion Type
- discussion topicanafunctors
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Jan 1st 2010

- Discussion Type
- discussion topicFAQ
- Category n-Forum
- Started by Andrew Stacey
- Comments 5
- Last comment by Mike Shulman
- Last Active Dec 31st 2009

- Discussion Type
- discussion topictopos
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Mike Shulman
- Last Active Dec 30th 2009

- Discussion Type
- discussion topictopological infinity-groupoids?
- Category Mathematics, Physics & Philosophy
- Started by domenico_fiorenza
- Comments 14
- Last comment by Mike Shulman
- Last Active Dec 30th 2009