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- Discussion Type
- discussion topicaccessible weak factorization system
- Category Latest Changes
- Started by Mike Shulman
- Comments 11
- Last comment by Mike Shulman
- Last Active Jan 17th 2019

- Discussion Type
- discussion topicalgebraic small object argument
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Jan 17th 2019

- Discussion Type
- discussion topiccombinatorial weak factorization system
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Jan 17th 2019

- Discussion Type
- discussion topicalgebraic model structures - table
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Jan 17th 2019

- Discussion Type
- discussion topiccorrespondence between measure and valuation theory
- Category Latest Changes
- Started by PaoloPerrone
- Comments 2
- Last comment by PaoloPerrone
- Last Active Jan 17th 2019

- Discussion Type
- discussion topicKleene algebra
- Category Latest Changes
- Started by Ulrik
- Comments 2
- Last comment by Ulrik
- Last Active Jan 17th 2019

- Discussion Type
- discussion topicvaluation (measure theory)
- Category Latest Changes
- Started by Urs
- Comments 6
- Last comment by PaoloPerrone
- Last Active Jan 17th 2019

- Discussion Type
- discussion topicStein manifold
- Category Latest Changes
- Started by Urs
- Comments 8
- Last comment by Urs
- Last Active Jan 17th 2019

have added a tad more content to

*Stein manifold*and cross-linked a bit more

- Discussion Type
- discussion topicintensional type theory
- Category Latest Changes
- Started by nLab edit announcer
- Comments 1
- Last comment by nLab edit announcer
- Last Active Jan 16th 2019

- Discussion Type
- discussion topicmonadic adjunction
- Category Latest Changes
- Started by Mike Shulman
- Comments 7
- Last comment by Mike Shulman
- Last Active Jan 16th 2019

- Discussion Type
- discussion topic(infinity,1)-topos
- Category Latest Changes
- Started by spitters
- Comments 1
- Last comment by spitters
- Last Active Jan 16th 2019

- Discussion Type
- discussion topicFilippo Bonchi
- Category Latest Changes
- Started by David_Corfield
- Comments 1
- Last comment by David_Corfield
- Last Active Jan 16th 2019

- Discussion Type
- discussion topicFunctorial Semantics of Algebraic Theories
- Category Latest Changes
- Started by David_Corfield
- Comments 1
- Last comment by David_Corfield
- Last Active Jan 16th 2019

I added the reference

- Filippo Bonchi, Dusko Pavlovic, Pawel Sobocinski,
*Functorial Semantics for Relational Theories*, (arXiv:1711.08699)

- Filippo Bonchi, Dusko Pavlovic, Pawel Sobocinski,

- Discussion Type
- discussion topicholographic entanglement entropy
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Jan 16th 2019

created a stub for

*holographic entanglement entropy*in reaction to this MO question.

- Discussion Type
- discussion topicaccessible model category
- Category Latest Changes
- Started by Mike Shulman
- Comments 2
- Last comment by Mike Shulman
- Last Active Jan 15th 2019

- Discussion Type
- discussion topicLean
- Category Latest Changes
- Started by Urs
- Comments 47
- Last comment by Guest
- Last Active Jan 15th 2019

added references to

*Lean*

- Discussion Type
- discussion topictau-additive measure
- Category Latest Changes
- Started by PaoloPerrone
- Comments 3
- Last comment by PaoloPerrone
- Last Active Jan 15th 2019

- Discussion Type
- discussion topicFred Jegerlehner
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 15th 2019

brief

`category:people`

-entry for hyperlinking references at*Higgs inflation*and*anomalous magnetic moment*

- Discussion Type
- discussion topicbiproduct
- Category Latest Changes
- Started by Colin Tan
- Comments 1
- Last comment by Colin Tan
- Last Active Jan 15th 2019

- Discussion Type
- discussion topicgeneral relativity
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Jan 15th 2019

I wanted to be able to use the link without it appearing in grey, so I created a stub for general relativity.

- Discussion Type
- discussion topictribe
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Jan 14th 2019

- Discussion Type
- discussion topictangent (oo,1)-category
- Category Latest Changes
- Started by Urs
- Comments 21
- Last comment by David_Corfield
- Last Active Jan 14th 2019

I rewrote the few sentences at tangent (infinity,1)-category in an attempt to make it run more smoothly.

In any case, there is not much there yet...

- Discussion Type
- discussion topicreflective factorization system
- Category Latest Changes
- Started by Mike Shulman
- Comments 6
- Last comment by Mike Shulman
- Last Active Jan 14th 2019

Created reflective factorization system.

- Discussion Type
- discussion topicFalk Hassler
- Category Latest Changes
- Started by nLab edit announcer
- Comments 2
- Last comment by nLab edit announcer
- Last Active Jan 14th 2019

- Discussion Type
- discussion topicorbifold
- Category Latest Changes
- Started by Urs
- Comments 25
- Last comment by Urs
- Last Active Jan 13th 2019

I am moving the following old query box exchange from orbifold to here.

old query box discussion:

I am confused by this page. It starts out by boldly declaring that “An orbifold is a differentiable stack which may be presented by a proper étale Lie groupoid” but then it goes on to talk about the “traditional” definition. The traditional definition definitely

**does not**view orbifolds as stacks. Neither does Moerdijk’s paper referenced below — there orbifolds form a 1-category.Personally I am not completely convinced that orbifolds are differentiable stacks. Would it not be better to start out by saying that there is no consensus on what orbifolds “really are” and lay out three points of view: traditional, Moerdijk’s “orbifolds as groupoids” (called “modern” by Adem and Ruan in their book) and orbifolds as stacks?

Urs Schreiber: please, go ahead. It would be appreciated.

end of old query box discussion

- Discussion Type
- discussion topicJohn Iliopoulos
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Jan 13th 2019

brief

`category:people`

-entry for hyperlinking a historical reference at*gauge theory*(I made “Jean Iliopoulos” a redirect, I hope I got it right that both names are used by the same person)

- Discussion Type
- discussion topicflop transition
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Jan 12th 2019

stub for flop transition (I mean the flop transition in terms of SCFTs. Maybe I should find a more specific title for that)

- Discussion Type
- discussion topicAtiyah-Singer index theorem
- Category Latest Changes
- Started by David_Corfield
- Comments 4
- Last comment by David_Corfield
- Last Active Jan 12th 2019

Where the page has

The index theorem is supposed to have an interpretation in terms of the quantum field theory of the superparticle on the given space,

is the “is supposed to” necessary? Why not “has an interpretation”? Is it just the general issue of any translation from mathematics to physics?

- Discussion Type
- discussion topicMichael Atiyah
- Category Latest Changes
- Started by Urs
- Comments 5
- Last comment by Urs
- Last Active Jan 11th 2019

- Discussion Type
- discussion topicconfiguration space of points
- Category Latest Changes
- Started by Tim_Porter
- Comments 47
- Last comment by Urs
- Last Active Jan 11th 2019

I fixed a link to a pdf file that was giving a general page, and not the file!