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Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

• some minimum

• Came across this categorification of pro-object.

• Redirect for bicategorical localization

• started an entry on the Borel construction, indicating its relation to the nerve of the action groupoid.

• Added the analogous sheaf condition in terms of covering families

• need to record some results on equivariant tubular neighbourhoods etc. Didn’t know where to put these, so I thought we’d need a dedicated entry on equivariant differential topology.

• the minimum definition and some plain cross-links (we didn’t have this elsewhere, or do we?)

• I have added pointer to the second of Postnikov’s original articles on the matter:

• M. M. Postnikov, Issledovaniya po gomotopičeskoĭ teorii nepreryvnyh otobraženiĭ. I. Algebraičeskaya teoriya sistem. II. Naturalʹnaya sistema i gomotopičeskiĭ tip. (Russian) $[$_Investigations in homotopy theory of continuous mappings. I. The algebraic theory of systems. II. The natural system and homotopy type._$]$ Trudy Mat. Inst. Steklov. no. 46. Izdat. Akad. Nauk SSSR, Moscow, 1955. (mathnet:tm1182)

Is there any linkable online trace of Postnikov’s first article:

• M. M. Postnikov, Determination of the homology groups of a space by means of the homotopy invariants, Doklady Akad. Nauk SSSR (N.S.) 76: 359–362 (1951)

?

• stub entry, to make links work

• starting something. Not done yet but need to save

• started some minimum at exceptional field theory (the formulation of 11d supergravity that makes the exceptional U-duality symmetry manifest)

• starting something

• added to conservative functor the proposition saying that pullback along strong epis is a conservative functor (if strong epis pull back).

How about the $\infty$-version?

• am finally giving this an entry

• a category:reference-page to ease cross-linking

• i polished the definition in bundle gerbe and then reorganized the former material on “Interpretations” in a new section

that first shows how to get a shifted central extension of groupoids form the bundle gerbe, and then demonstrates that this is the total space of a principal 2-bundle

• Fixed name of the page: BPTS -> BPST

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