Geodesic
Pullback and finite coproduct preserving functors between categories of permutation representations: Corrigendum and Addendum
Theory and applications of categories, Tome 18 (2007), pp. 151-156.

Voir la notice de l'article provenant de la source Theory and Applications of Categories website

Francisco Marmolejo pointed out a mistake in the statement of Proposition 4.4 in our TAC paper (Vol. 16, No. 28). The mistaken version is used later in that paper. Our purpose here is to correct the error by providing an explicit description of the finite coproduct completion of the dual of the category of connected G-sets. The description uses the distinguished morphisms of a factorization system on the category of G-sets.
Classification : 58A03, 18A30
Keywords: topos, permutation representations, limits and colimits, adjunction, Mackey functors 
@article{TAC_2007_18_a4,
     author = {Elango Panchadcharam and Ross Street},
     title = {Pullback and finite coproduct preserving functors between
categories of permutation representations: {Corrigendum} and {Addendum}},
     journal = {Theory and applications of categories},
     pages = {151--156},
     publisher = {mathdoc},
     volume = {18},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2007_18_a4/}
}
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Elango Panchadcharam; Ross Street. Pullback and finite coproduct preserving functors between
categories of permutation representations: Corrigendum and Addendum. Theory and applications of categories, Tome 18 (2007), pp. 151-156. http://geodesic.mathdoc.fr/item/TAC_2007_18_a4/