Am 03.06.2011 10:32, schrieb Guy:
What might --| mean, if not a comment? It doesn't seem possible to
define it as an operator.
Obviously, anyone who is going to write a formal logic framework would
want to define the following operators ;) :
T |- phi: T proves phi
T |-- phi: T proves phi directly (by application of a single rule)
phi -| T: phi is proven by T
phi --| T: phi is proven by T directly
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