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    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeFeb 12th 2012

    added a little bit of content to cohomology operation

    • CommentRowNumber2.
    • CommentAuthorDavid_Corfield
    • CommentTimeApr 26th 2016
    • (edited Apr 26th 2016)

    This would presumably be the entry to mention

    • Daniel Grady, Hisham Sati, Primary operations in differential cohomology, (arXiv:1604.05988)

    where the differential cohomology diagram and cohesion are to be found on p.9.

    What does the ’primary’ part mean? WHat’s the relationship to primary homotopy operation?

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeSep 7th 2018

    added bibliograpy details for

    diff, v19, current

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeSep 2nd 2020
    • (edited Sep 2nd 2020)

    I have touched the references, added some publication data, some brief comment on content, and rearranged a little for a more systematic list.

    Intentionally misspelled (and un-linked) Martin Tangora’s name, because otherwise the entry wouldn’t save, due to an overreactive spam detector (see here)

    diff, v20, current

    • CommentRowNumber5.
    • CommentAuthorUrs
    • CommentTimeSep 2nd 2020
    • (edited Sep 2nd 2020)

    Tim, you just tried (rev 21) to hyperlink the intentionally misspelled name (as per #4).

    That doesn’t make sense, does it? I have rolled back your edit. Let’s wait until the bug gets fixed, and then add in the correct hyperlink.

    • CommentRowNumber6.
    • CommentAuthorTim_Porter
    • CommentTimeSep 2nd 2020

    I was trying to understand what on earth was happening. It is quite mystifying why ’tango’ should be considered spam!!! As you said, we should wait until that bug is fixed.

    • CommentRowNumber7.
    • CommentAuthorUrs
    • CommentTimeJan 19th 2021
    • CommentRowNumber8.
    • CommentAuthorUrs
    • CommentTimeJan 19th 2021
    • (edited Jan 19th 2021)

    added more references:

    and tried to organize the list of references a little

    diff, v26, current

    • CommentRowNumber9.
    • CommentAuthorUrs
    • CommentTimeJan 20th 2021

    I have added an Examples-section Cup-powers in multiplicative cohomology with details of how ααα\alpha \mapsto \alpha \cup \alpha is an (unstable) cohomology operation on any multiplicative cohomology theory; amplifying how, via the Yoneda lemma on the homotopy category, this comes down to there being smash-monoidal diagonals on suspension spectra.

    diff, v27, current

    • CommentRowNumber10.
    • CommentAuthorDavid_Corfield
    • CommentTimeJan 20th 2021
    • (edited Jan 20th 2021)

    Presumably you don’t want that first ’op’ in

    Ho(PointedTopologicalSpaces) opFunctors(Ho(PointedTopologicalSpaces) op,Set) Ho \big( PointedTopologicalSpaces \big)^{op} \;\overset{ \;\; \;\; }{\hookrightarrow}\; Functors \Big( Ho \big( PointedTopologicalSpaces \big)^{op} , Set \Big)
    • CommentRowNumber11.
    • CommentAuthorUrs
    • CommentTimeJan 20th 2021

    Thanks! Fixed now.

    diff, v30, current

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