闭锥小类量子的初等刻划
Elementary characterisation of small quantaloids of closed cribles
摘要:
每一个小位点(C,J)决定一个闭cribles的小quantaloid R(C,J)。本文证明了小拟量子群Q对某个小点(C,J)等价于R(C,J)当且仅当在Q中的左伴随范畴Map(Q)上存在(必然次标准)Grothendieck拓扑J使得Q=R(Map(Q),J),当且仅当Q是局部局部的、映射离散的、弱表的和弱模的.如果在Q中的上自反分裂,则Map(Q)上的拓扑J是标准拓扑。
英文摘要:
Each small site (C,J) determines a small quantaloid of closed cribles R(C,J). We prove that a small quantaloid Q is equivalent to R(C,J) for some small site (C,J) if and only if there exists a (necessarily subcanonical) Grothendieck topology J on the category Map(Q) of left adjoints in Q such that Q=R(Map(Q),J), if and only if Q is locally localic, map- discrete, weakly tabular and weakly modular. If moreover coreflexives split in Q, then the topology J on Map(Q) is the canonical topology.
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