Talk:Frölicher–Nijenhuis bracket

pullback
The insertion operator is "obviously" a pullback; can one say more, and what would that be? Is it correct to imagine that there are assorted cohomological formulas that follow from this? Would they somehow be "the usual", or are there surprises? Should I think of this as an example of some category, and which one? 67.198.37.17 (talk) 02:49, 13 January 2019 (UTC)