具有反调对合的偏序集到剩余结构的扩张
Extensions of posets with an antitone involution to residuated structures
摘要:
证明了每个具有反序对合的未必有界偏序集P=(P,\le,')都可以扩张为剩余偏序集E(P)=(E(P),\le,\odot,\rightarrow,1),其中x'= x \rightarrow 0,对所有x \in P,如果P是具有反序对合的格,则E(P)也是格.证明了偏序集可以通过有限链扩张为剩余偏序集,布尔代数(B,\vee,\wedge,',p,q)可以通过有限链扩张为剩余格(Q,\vee,\wedge,\odot,\rightarrow,1),使得x \odot y=x \wedge y,x \rightarrow y=x' \vee y,对所有x,y \in B.
英文摘要:
We prove that every not necessarily bounded poset P=(P,\le,') with an antitone involution can be extended to a residuated poset E(P)=(E(P),\le,\odot,\rightarrow,1) where x'=x\rightarrow0 for all x\in P. If P is a lattice with an antitone involution then E(P) is a lattice, too. We show that a poset can be extended to a residuated poset by means of a finite chain and that a Boolean algebra (B,\vee,\wedge,',p,q) can be extended to a residuated lattice (Q,\vee,\wedge,\odot,\rightarrow,1) by means of a finite chain in such a way that x\odot y=x\wedge y and x\rightarrow y=x'\vee y for all x,y\in B.
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