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    • Page created, but author did not leave any comments.

      v1, current

    • have added a tad more content to Stein manifold and cross-linked a bit more

    • Aleks Kissinger has contacted me about his aims to start a collection of nLab entries on quantum information from the point of view of the Bob Coecke school.

      Being very much delighted about this offer, I created a template entry quantum information for his convenience.

    • Edit to: GUT by Urs Schreiber at 2018-04-01 01:21:13 UTC.

      Author comments:

      added pointer to textbook account

    • It should be clarified that type checking is decidable, not e.g Type inhabitation or some other property.


      diff, v10, current

    • added to the references-section of the stub type-theoretic model category pointers to André Joyal’s slides on “typoses” (he is currently speaking about that again at CRM in Barcelona).

      (maybe that entry should be renamed to “categorical semantics for homotopy type theory” or the like, but I won’t further play with it for the time being).

      I am also pointing to Mike’s article and to his course notes. I will maybe ask André later, but I am a bit confused about (was already in Halifax) how he presents his typoses, without mentioning of at least very similar categorical semantics that has been discussed before. Maybe I am missing some sociological subtleties here.

    • Add a note about “Daniel’s answer” to the semantics-structure question. The discussion on this page should really be merged into the main text and archived at the forum.

      diff, v18, current

    • To fulfil a link. Can’t seem to find a institutional website for him.

      v1, current

    • am starting some minimum here. Have been trying to read up on this topic. This will likely become huge towards beginning of next year

      v1, current

    • there is an old article (Berends-Gastman 75) that computes the 1-loop corrections due to perturbative quantum gravity to the anomalous magnetic moment of the electron and the muon. The result turns out to be independent of the choice of (“re”-)normalization (hence what they call “finite”).

      I have added a remark on this in the (g2)(g-2)-entry here and also at quantum gravity here.

    • Created page to record the definition.

      v1, current

    • added references to Lean

    • Created page, more content to be added.

      v1, current

    • Added the contents of the canonical isomorphism induced by some non-canonical isomorphism as coming from Lack’s proof.

      diff, v32, current

    • I ended up collecting some references at string phenomenology and accompanying them with a bit of text

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

    • started a bare minimum at Poisson-Lie T-duality, for the moment just so as to have a place to record the two original references

    • Created page to record this construction, which I just rediscovered, and its relationship to semi-left-exact reflections in 1-category theory.

      v1, current

    • I expanded proper model category a bit.

      In particular I added statement and (simple) proof that in a left proper model category pushouts along cofibrations out of cofibrants are homotopy pushouts. This is at Proper model category -- properties

      On page 9 here Clark Barwick supposedly proves the stronger statement that pushouts along all cofibrations in a left proper model category are homotopy pushouts, but for the time being I am failing to follow his proof.


    • 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...