单词	surjection
释义	surjection /səːˈdʒɛkʃ(ə)n / noun Mathematics An onto mapping (see onto).There is a natural duality between proper surjections and proper injections and between the M and the N forms.... We show that nonexistence theorems for continuous surjections between continua and related results extend to almost continuous functions. The function s is not a surjection because it never takes on an odd value. Derivatives surjective /səːˈdʒɛktɪv/ adjective ... We prove that every finite, simple, surjective algebra having no proper subalgebras is either quasiprimal or affine or isomorphic to an algebra term equivalent to a matrix power of a unary permutational algebra. Origin 1960s: from sur-1, after injection.
随便看	distributary distribute distributed denial of service distributed system distribution distributional distribution board distributive distributively distributor distributor cap district district attorney district auditor district commissioner district court district heating district high school district nurse District of Columbia district plan district surgeon distro distrust distruster

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