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Of the nature of or relating to an injection or one-to-one mapping.
‘In 1940 he introduced the concept of an injective module, then began studying group actions in geometry.’
‘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.’
‘For example, Fld has the rather unusual property that every morphism in this category is an injective map of sets; it is easily seen that this fails for the other examples mentioned.’