单词	injective
释义	injective /ɪnˈdʒɛktɪv / adjective Mathematics Of the nature of or relating to an injection or one-to-one mapping.Clearly, V is invariant under the indicated action of S n, so we obtain an injective group homomorphism [rho].... The map is also an injective homomorphism. In 1940 he introduced the concept of an injective module, then began studying group actions in geometry.
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