In what cases do you get homology/cohomology with SL(2,Z) or SL(2,R) coefficients?
@graveolens You'd have to start with chain complexes built out of copies of SL(2,-) or something uglier. No idea why someone would do that.
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@graveolens Never heard of anybody doing them with nonabelian groups. Sounds severely headache-inducing to me.Thanks. Twitter will use this to make your timeline better. UndoUndo
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. Banned in Sweden. SubGenius, Zhuangist, white-hat troll. Defrocked mathematician. Brain problems.