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Def. S. 12:Sind G und G' Gruppen, so heisst eine Abbildung f: G → G' Gruppenhomoporphismus, oder Homomorphismus, wenn für alle a, b ∈ G gilt:f(a) . f(b) = f(a.b).Die Menge aller Homomorphismen G → G' wird mit Hom(G, G') bezeichnet.Ein Homomorphismus der auch...- injektiv ist, heisst ...- surjektiv ist, heisst ...- bijektiv ist, heisst ...Ein Homomorphismus nach sich selbst heisst ...Ein bijektiver Homomorphismus heisst ...
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