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2-category 2-category-theory abelian-categories adjoint algebra algebraic algebraic-geometry algebraic-topology analysis analytic-geometry arithmetic arithmetic-geometry book bundles calculus categories category category-theory chern-weil-theory cohesion cohesive-homotopy-theory 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 differential-topology digraphs duality elliptic-cohomology enriched fibration finite foundations functional-analysis functor gauge-theory gebra geometric-quantization geometry goodwillie-calculus 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 kan lie lie-theory limits linear linear-algebra locale localization logic manifolds mathematics measure-theory 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 science set set-theory sheaf simplicial space spin-geometry stable-homotopy-theory string string-theory superalgebra supergeometry svg symplectic-geometry synthetic-differential-geometry terminology theory topology topos topos-theory type type-theory universal variational-calculus

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- Discussion Type
- discussion topicIsmail Zahed
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 13th 2020

- Discussion Type
- discussion topicMannque Rho
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 13th 2020

- Discussion Type
- discussion topicCarlos Naya
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 13th 2020

- Discussion Type
- discussion topicneutron star
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 13th 2020

added pointer to discussion of models of neutron stars by Skyrmions:

- Carlos Naya,
*Neutron stars within the Skyrme model*, Int. J. Mod. Phys. E 28, 1930006 (2019) (arXiv:1910.01145)

- Carlos Naya,

- Discussion Type
- discussion topicStefano Bolognesi
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 13th 2020

brief

`category:people`

-entry for hyperlinking references at*Skyrmion*and at*AdS/QCD correspondence*

- Discussion Type
- discussion topicMarcus Tressl
- Category Latest Changes
- Started by Tim_Porter
- Comments 1
- Last comment by Tim_Porter
- Last Active Feb 13th 2020

- Discussion Type
- discussion topicstar-autonomous category
- Category Latest Changes
- Started by Mike Shulman
- Comments 22
- Last comment by nLab edit announcer
- Last Active Feb 12th 2020

I added to star-autonomous category a mention of “$\ast$-autonomous functors”.

- Discussion Type
- discussion topicmodal homotopy type theory
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Feb 12th 2020

copied over the homotopy-theoretic references from

*modal type theory*to here.

- Discussion Type
- discussion topicTaro Kimura
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 12th 2020

- Discussion Type
- discussion topicGilbert Ryle
- Category Latest Changes
- Started by David_Corfield
- Comments 1
- Last comment by David_Corfield
- Last Active Feb 12th 2020

- Discussion Type
- discussion topictranscendental grammar
- Category Latest Changes
- Started by Thomas Holder
- Comments 1
- Last comment by Thomas Holder
- Last Active Feb 12th 2020

- Discussion Type
- discussion topicStephan Wannowski
- Category Latest Changes
- Started by Thomas Holder
- Comments 1
- Last comment by Thomas Holder
- Last Active Feb 12th 2020

- Discussion Type
- discussion topicK-theory classification of D-brane charge
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 12th 2020

am finally giving this its own entry, to be split off (not done yet) from

*D-brane charge*and to be in parallel with*K-theory classification of topological phases of matter*

- Discussion Type
- discussion topicsolid state physics -- contents
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 12th 2020

- Discussion Type
- discussion topicK-theory classification of topological phases of matter
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 12th 2020

After thinking about whether this discussion should go to any or all of

*topological phases of matter*,*topological states of matter*,*topological order*,*topological insulators*(quite a mess of terminology!), let me give it it’s own stand-alone entry hereby.Similarly, I will finally create a corresponding stand-alone entry for

*K-theory classification of D-brane charge*

- Discussion Type
- discussion topictopological phases of matter via K-theory -- references
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 12th 2020

- Discussion Type
- discussion topicgapped Hamiltonian
- Category Latest Changes
- Started by Urs
- Comments 4
- Last comment by Urs
- Last Active Feb 12th 2020

- Discussion Type
- discussion topicmodal type theory
- Category Latest Changes
- Started by Urs
- Comments 90
- Last comment by Urs
- Last Active Feb 11th 2020

created an entry

*modal type theory*; tried to collect pointers I could find to articles which discuss the interpretation of modalities in terms of (co)monads. I was expecting to find much less, but there are a whole lot of articles discussing this. Also cross-linked with*monad (in computer science)*.

- Discussion Type
- discussion topicfiber integration
- Category Latest Changes
- Started by Urs
- Comments 13
- Last comment by Dmitri Pavlov
- Last Active Feb 11th 2020

started fiber integration

- Discussion Type
- discussion topicdifferentiable map
- Category Latest Changes
- Started by TobyBartels
- Comments 1
- Last comment by TobyBartels
- Last Active Feb 11th 2020

- Discussion Type
- discussion topicPersistent homology
- Category Latest Changes
- Started by Tim_Porter
- Comments 8
- Last comment by Urs
- Last Active Feb 11th 2020

I have added some more material and some slides at persistent homology.

- Discussion Type
- discussion topicinfinity
- Category Latest Changes
- Started by TobyBartels
- Comments 4
- Last comment by Todd_Trimble
- Last Active Feb 11th 2020

- Discussion Type
- discussion topicTony Skyrme
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 11th 2020

- Discussion Type
- discussion topichorizontal chord diagram
- Category Latest Changes
- Started by Urs
- Comments 47
- Last comment by Urs
- Last Active Feb 11th 2020

- Discussion Type
- discussion topicOn Vortex Atoms
- Category Latest Changes
- Started by Urs
- Comments 4
- Last comment by Urs
- Last Active Feb 11th 2020

added doi-link to

- Helge Kragh, 2002,
*The Vortex Atom: A Victorian Theory of Everything*, Centaurus, 44(1-2), pp. 32–114 (philpapers:KRAVTA, doi:10.1034/j.1600-0498.2002.440102.x)

- Helge Kragh, 2002,

- Discussion Type
- discussion topicHandbook of Homotopy Theory
- Category Latest Changes
- Started by Urs
- Comments 13
- Last comment by DavidRoberts
- Last Active Feb 11th 2020

- Discussion Type
- discussion topicPaul Kirk
- Category Latest Changes
- Started by Tim_Porter
- Comments 2
- Last comment by Tim_Porter
- Last Active Feb 11th 2020

- Discussion Type
- discussion topictopological data analysis
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 11th 2020

added this pointer:

- Gunnar Carlsson,
*Topology and data*, Bull. Amer. Math. Soc. 46 (2009), 255-308 (doi:10.1090/S0273-0979-09-01249-X)

- Gunnar Carlsson,

- Discussion Type
- discussion topicstates and observables -- content
- Category Latest Changes
- Started by Urs
- Comments 3
- Last comment by Urs
- Last Active Feb 11th 2020

- Discussion Type
- discussion topicGuo Chuan Thiang
- Category Latest Changes
- Started by Urs
- Comments 1
- Last comment by Urs
- Last Active Feb 10th 2020

brief

`category:people`

-entry for hyperlinking references at gapped Hamiltonian