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The categories pCS(X,Pro(k)) of precosheaves and CS(X,Pro(k)) of cosheaves on a small Grothendieck site X, with values in the category Pro(k) of pro-k-modules, are constructed. It is proved that pCS(X,Pro(k)) satisfies the AB4 and AB5* axioms, while CS(X,Pro(k)) satisfies AB3 and AB5*. Homology theories for cosheaves and precosheaves, based on quasi-projective resolutions, are constructed and investigated.
@article{TAC_2021_37_a32, author = {Andrei V. Prasolov}, title = {Cosheaves}, journal = {Theory and applications of categories}, pages = {1080--1148}, publisher = {mathdoc}, volume = {37}, year = {2021}, language = {en}, url = {http://geodesic.mathdoc.fr/item/TAC_2021_37_a32/} }
Andrei V. Prasolov. Cosheaves. Theory and applications of categories, Tome 37 (2021), pp. 1080-1148. http://geodesic.mathdoc.fr/item/TAC_2021_37_a32/