以秩强映射或强映射为态射的拟阵范畴中的范畴同构都是拟阵同构。
It is shown that the categorical isomorphisms in the category of matroids with either rank strong maps or strong maps as morphisms are isomorphisms in matroids sense.
拟离散模的子模的任何两个余闭包是超视的，因而是同构的；
Any two co closures of a submodule of quasi discrete module M are superspective, and hence isomorphic;
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