Galois Connections for Incidence Hopf Al
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Marcelo Aguiar; Walter Ferrer Santos
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Article
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2000
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Elsevier Science
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English
β 277 KB
An important well-known result of Rota describes the relationship between the Mo bius functions of two posets related by a Galois connection. We present an analogous result relating the antipodes of the corresponding incidence Hopf algebras, from which the classical formula can be deduced. To motiva