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    • Should we replace "to all the elements in the set" with "to all the elements in the subset" at meet's definition?

      > In a preordered set or partially ordered set then the meet or infimum of a subset of elements is, if it exists, the largest element which is smaller or equal to all the elements in the set. If this element is member of the original subset, then it is also called the minimum of that subset.

      https://ncatlab.org/nlab/show/meet

      Thank you!
    • some minimum, for the monet just so as to give a home to the references

      • Thibault Damour, High-energy gravitational scattering and the general relativistic two-body problem, Phys. Rev. D 97, 044038 (2018) (arXiv:1710.10599)

      • Donato Bini, Thibault Damour, Gravitational spin-orbit coupling in binary systems at the second post-Minkowskian approximation, Phys. Rev. D 98, 044036 (2018) (arXiv:1805.10809)

      and for cross-linking with gravitational waves.

      v1, current

    • As suggested on another thread, I added something here.

      diff, v3, current

    • I tried to explain what a superselection sector is which is less easy than one would think…of course what I would really like to do is to explain some DHR-superselection theory and there one can of course cite the mathematical definition without any further explanation of the origins :-)

    • Started pure subobject. I wish someone would tell me the intuitive reason for their importance though!

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

      v1, current

    • created hyperbolic manifold in order to record a reference on the relation between volumes of hyperbolic 3-folds and their Chern-Simons/Dijkgraaf-Witten invariants by Zickert.

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

      v1, current

    • it’s time to have a contents-table to be !includeed for cross-references in relevant entries

      v1, current

    • to go with David C.’s latest edits

      v1, current

    • stub, for the moment just so as to make links work

      v1, current

    • added this pointer:

      • Andrew Kresch, On the geometry of Deligne-Mumford stacks (doi:10.5167/uzh-21342, pdf), in D. Abramovich, A. Bertram, L. Katzarkov, R. Pandharipande, M. Thaddeus (eds.) Algebraic Geometry: Seattle 2005, Proceedings of Symposia in Pure Mathematics Providence, Rhode Island: American Mathematical Society, 259-271 (pspum-80-1)

      Was looking for references to point readers to for background on the idea that DM-stacks and orbidfolds are essentially the same thing, realized in two different geometric categories (up to a list of inessential technical conditions). This is the best I have found so far. If anyone knows further references along these lines, please drop a note.

      diff, v14, current

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

      v1, current

    • added the statement (here) that Borel equivariant spectra are precisely the right induced genuine equivariant spectra

      diff, v3, current

    • I kept being annoyed about the nature of discussion of the “multiverse” (the one in cosmology, not the one in set theory). Now I thought instead of steadily being annoyed, I should start an nnLab entry that does it better. So I did now (or tried to), at multiverse.

    • Adding my user page to the nLab. :)

      Nico Courts

      v1, current

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

      v1, current

    • starting something and need to save – nothing here yet

      v1, current

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

      v1, current

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

      v1, current

    • some minimum, just for completeness

      v1, current

    • to be !include-ed as a floating context menu into relevant entries

      v1, current

    • starting something, and need to save. nothing here yet, just a moment…

      v1, current

    • thought I had had created a brief entry with this title long ago, but apparently I didn’t

      v1, current

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

      v1, current

    • T,FT,F are additive subcategories, thus contain 00

      Anonymous

      diff, v17, current