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brief category:people-entry for hyperlinking references at spin chain
added to N=4 D=4 super Yang-Mills theory a section
Properties – Closed expressions for physical observables
with a brief mentioning of integrability of the dilatation operator, MHV amplitudes and planar limit scattering amplitudes.
brief category:people-entry for hyperlinking references at model structure on operads, and Feynman category
brief category:people-entry for hyperlinking references at single trace operator, SYK model and weight systems on chord diagrams in physics
added statement of the universal property (here), first in classical form, then using the sharp modality, and added remark that this should be the categorical semantics of Mike’s remark 3.14 in arXiv:1509.07584
(also replaced the Definition-paragraph with a slightly beautified version)
I have created a stub for this at Petri net. I hope to develop the links with higher dimensional automata and also with linear logic.
brief category:people-entry for hyperlinking references at Sachdev-Ye-Kitaev model, Jackiw-Teitelboim gravity but also at weight system and chord diagram
brief category:people-entry for hyperlinking references at Sachdev-Ye-Kitaev model, Jackiw-Teitelboim gravity but also at weight system and chord diagram
brief category:people-entry for hyperlinking references at Sachdev-Ye-Kitaev model, Jackiw-Teitelboim gravity but also at weight system and chord diagram
added the string diagram incarnation of the Lie action property (here), copied over from STU relation.
Will add this also to Jacobi identity
added this to the list of references:
Speculative remarks on the possible role of maps from spacetime to the 4-sphere in some kind of quantum gravity via spectral geometry are in
reviewed in
Alain Connes, section 4 of Geometry and the Quantum, Foundations of Mathematics and Physics One Century After Hilbert. Springer, Cham, 2018. 159-196 (arXiv:1703.02470)
Alain Connes, from 58:00 to 1:25:00 in Why Four Dimensions and the Standard Model Coupled to Gravity - A Tentative Explanation From the New Geometric Paradigm of NCG, talk at IHES, 2017 (video recording)
I have tried to give algebraic topology a better Idea-section.
I had started an entry “exponentiation” but then thought better of it and instead expanded the existing exponential object: added an examples-section specifically for and made some remarks on exponentiation of numbers.