Re: Kripke semantics

2001-04-25 Thread Marchal
George Levy wrote: > >So far so good :-) >sorry with the delay *I*'m sorry for the delay, and the forthcoming delays (!). >let's move ahead... OK. >just a >question: I will first answer your question and then proceed. > >>>A realist world is one with access to at least one t

Re: Kripke semantics

2001-04-23 Thread George Levy
So far so good sorry with the delay let's move ahead... just a question: >>A realist world is one with access to at least one terminal >>world. w>w1 --| >You mean a realist frame, I guess. A frame is a set of world. Therefore, I would expect a fram

Re: Kripke semantics

2001-04-18 Thread Marchal
George Levy wrote: >Reflexive, Transitive and Symmetric applies only to the relation R that >define accessibility. Exactly. >So: > >Reflexive: > >W >| > <--| I will assume this is a courageous attempt to draw a curl loop. Nice. >Transitive: > >W1 --> W2 > W3 Yes.

Re: Kripke semantics

2001-04-15 Thread George Levy
Reflexive, Transitive and Symmetric applies only to the relation R that define accessibility. So: Reflexive: W >| <--| Transitive: W1 --> W2 > W3 Symmetric W1 <-> W2 And the Goedel-like formula <>p --> -[]<>p means: if p is true in at least one world accessed

Re: Kripke semantics

2001-04-10 Thread Marchal
George Levy wrote: >I am not sure if you gave a definition of reflexive, >transitive and symmetric. I have. (http://www.escribe.com/science/theory/m2689.html) :-) But there is no problem with repetition. The real problem is with the absence of pictures Please take a pencil and try to tr