Set - a category of all sets. Its objects are all sets; its morphisms are set functions.

Set 所有集合的范畴.

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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.

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。

youdao

Especially gives a new characterization on morphisms of category of semicontinuous lattices.

着重于半连续格范畴的态射类的构成，给出了一个新的刻画。

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