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2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry beauty bundles calculus categories category category-theory chern-weil-theory cohesion cohesive-homotopy-theory cohesive-homotopy-type-theory cohomology combinatorics complex complex-geometry computable-mathematics computer-science constructive cosmology definitions deformation-theory descent diagrams differential differential-cohomology differential-equations differential-geometry digraphs duality elliptic-cohomology enriched fibration finite foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry goodwillie-calculus graph graphs gravity group-theory harmonic-analysis higher higher-algebra higher-category-theory higher-differential-geometry higher-geometry higher-lie-theory higher-topos-theory history homological homological-algebra homology homotopy homotopy-theory homotopy-type-theory index-theory integration integration-theory internal-categories k-theory kan lie lie-theory limit limits linear linear-algebra locale localization logic mathematics measure-theory modal modal-logic model model-category-theory monoidal monoidal-category-theory morphism motives motivic-cohomology newpage noncommutative noncommutative-geometry number-theory of operads operator operator-algebra order-theory 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-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory tqft type type-theory universal variational-calculus

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- Discussion Type
- discussion topicexplicit substitution
- Category Latest Changes
- Started by Mike Shulman
- Comments 1
- Last comment by Mike Shulman
- Last Active Nov 26th 2018

- Discussion Type
- discussion topicmonad (in linguistics)
- Category Latest Changes
- Started by David_Corfield
- Comments 3
- Last comment by David_Corfield
- Last Active Nov 25th 2018

- Discussion Type
- discussion topicOmega-group
- Category Latest Changes
- Started by Tim_Porter
- Comments 1
- Last comment by Tim_Porter
- Last Active Nov 25th 2018

- Discussion Type
- discussion topicGoodwillie derivative of the identity functor
- Category Latest Changes
- Started by Urs
- Comments 9
- Last comment by Urs
- Last Active Nov 23rd 2018

- Discussion Type
- discussion topicGoodwillie chain rule
- Category Latest Changes
- Started by David_Corfield
- Comments 1
- Last comment by David_Corfield
- Last Active Nov 23rd 2018

- Discussion Type
- discussion topicsupergeometry
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Nov 23rd 2018

added to supergeometry a link to the recent talk

- Mikhail Kapranov,
*Categorification of supersymmetry and stable homotopy groups of spheres*(video)

- Mikhail Kapranov,

- Discussion Type
- discussion topicArthur Wasserman
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 22nd 2018

brief category:people-entry for the purpose of hyperlinking references at

*equivariant cohomotopy*

- Discussion Type
- discussion topicflavours of cohomotopy -- table
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 22nd 2018

- Discussion Type
- discussion topicequivariant cohomotopy
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 22nd 2018

am starting something here. For the moment I just want to record today’s

- Daniel Grady,
*Cobordisms of global quotient orbifolds and an equivariant Pontrjagin-Thom construction*(arXiv:1811.08794)

eventually more references ought to be added

- Daniel Grady,

- Discussion Type
- discussion topic12-dimensional supergravity
- Category Latest Changes
- Started by David_Corfield
- Comments 16
- Last comment by Urs
- Last Active Nov 21st 2018

Started 12-dimensional supergravity following some discussion with Urs.

- Discussion Type
- discussion topicCode loop
- Category Latest Changes
- Started by DavidRoberts
- Comments 2
- Last comment by DavidRoberts
- Last Active Nov 21st 2018

Created code loop.

- Discussion Type
- discussion topicmonopole
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 21st 2018

added pointer to

- Nabil Iqbal,
*Monopole correlations in holographically flavored liquids*, Phys. Rev. D 91, 106001 (2015) (arXiv:1409.5467)

for discussion of monopole correlation functions.

Really I am looking for discussion of

*caloron*correlation functions, though…- Nabil Iqbal,

- Discussion Type
- discussion topicNabil Iqbal
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 21st 2018

- Discussion Type
- discussion topicknot
- Category Latest Changes
- Started by zskoda
- Comments 3
- Last comment by Tim_Porter
- Last Active Nov 20th 2018

I added the definition and several references on higher dimensional knots under knot.

- Discussion Type
- discussion topicidempotent semifield
- Category Latest Changes
- Started by Daniel Luckhardt
- Comments 3
- Last comment by Daniel Luckhardt
- Last Active Nov 20th 2018

- Discussion Type
- discussion topiclanguage
- Category Latest Changes
- Started by Daniel Luckhardt
- Comments 3
- Last comment by zskoda
- Last Active Nov 19th 2018

- Discussion Type
- discussion topiccaloron
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Nov 19th 2018

expanded the Idea-section, linking back to Wick rotation and thermal field theory

- Discussion Type
- discussion topicmass gap
- Category Latest Changes
- Started by Urs
- Comments 15
- Last comment by Urs
- Last Active Nov 19th 2018

I am trying to collect citable/authorative references that amplify the analog of the mass gap problem in particle phenomenology, where it tramslates into the open problem of computing hadron masses and spins from first principles (due to the open problem of showing existence of hadrons in the first place!).

This is all well and widely known, but there is no culture as in mathematics of succinctly highlighting open problems such that one could refer to them easily.

I have now created a section

*References – Phenomenology*to eventually collect references that come at least close to making this nicely explicit. (Also checked with the PF community here)

- Discussion Type
- discussion topicquantum tunneling
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 19th 2018

- Discussion Type
- discussion topicshuffle
- Category Latest Changes
- Started by Noam_Zeilberger
- Comments 1
- Last comment by Noam_Zeilberger
- Last Active Nov 19th 2018

- Discussion Type
- discussion topicintersecting D-brane model
- Category Latest Changes
- Started by Urs
- Comments 4
- Last comment by Urs
- Last Active Nov 18th 2018

**Edit to**: intersecting D-brane model by Urs Schreiber at 2018-04-01 00:55:01 UTC.**Author comments**:hyperlinked pointer to textbook by Ibanez-Uranga

- Discussion Type
- discussion topictopos
- Category Latest Changes
- Started by Urs
- Comments 17
- Last comment by David_Corfield
- Last Active Nov 17th 2018

Added a table of contents to topos, a section on "special classes" and one on "higher toposes".

- Discussion Type
- discussion topicKaluza-Klein mechanism
- Category Latest Changes
- Started by Urs
- Comments 15
- Last comment by Urs
- Last Active Nov 17th 2018

recently there were some questions about it here on the nForum: now there is an entry on the Kaluza-Klein mechanism

- Discussion Type
- discussion topicinfinite-temperature thermal field theory
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 17th 2018

- Discussion Type
- discussion topicbound state
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 17th 2018

- Discussion Type
- discussion topicplasma
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 17th 2018

- Discussion Type
- discussion topicsignature (in logic)
- Category Latest Changes
- Started by Alizter
- Comments 3
- Last comment by Todd_Trimble
- Last Active Nov 17th 2018

- Discussion Type
- discussion topicRHIC
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 17th 2018

- Discussion Type
- discussion topicviscosity
- Category Latest Changes
- Started by Urs
- Comments 2
- Last comment by Urs
- Last Active Nov 17th 2018

- Discussion Type
- discussion topicphase of matter
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Nov 17th 2018