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Projective modules over Frobenius algebras and Hopf comodule algebras

This note presents some results on projective modules and the Grothendieck groups K_0 and G_0 for Frobenius algebras and for certain Hopf Galois extensions. Our principal technical tools are the Higman trace for Frobenius algebras and a product formula for Hattori-Stallings ranks of projectives over Hopf Galois extensions.

preprint2010arXivOpen access
Martin LorenzLoretta FitzGerald Tokoly
math.RA
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Martin LorenzLoretta FitzGerald Tokoly

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