Any direct summand of an injective module is injective
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a Z-module is injective if and only if it is divisible
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Baer s Criterion and Baer s Lemma
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10 marcas que la C4G4RON con las traducciones 😅 • #Datazo
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MASTER Relative Velocity in AP Physics 1 with Ease!
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In a particular system of units, a physical quantity can be expressed in terms of the electric charg
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any injective has no proper essential extension
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injective modules if and only if is a direct summand of each of its extensions
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