aima/logic.py
def pl_resolve(ci, cj):
    """Return all clauses that can be obtained by resolving clauses ci and cj.
    >>> for res in pl_resolve(to_cnf(A|B|C), to_cnf(~B|~C|F)):
    ...    ppset(disjuncts(res))
    set([A, C, F, ~C])
    set([A, B, F, ~B])
    """
    clauses = []
    for di in disjuncts(ci):
        for dj in disjuncts(cj):
            if di == ~dj or ~di == dj:
                dnew = unique(removeall(di, disjuncts(ci)) +
                              removeall(dj, disjuncts(cj)))
                clauses.append(associate('|', dnew))
    return clauses
def pl_resolve(ci, cj):
    """Return all clauses that can be obtained by resolving clauses ci and cj.
    >>> for res in pl_resolve(to_cnf(A|B|C), to_cnf(~B|~C|F)):
    ...    ppset(disjuncts(res))
    set([A, C, F, ~C])
    set([A, B, F, ~B])
    """
    clauses = []
    for di in disjuncts(ci):
        for dj in disjuncts(cj):
            if di == ~dj or ~di == dj:
                dnew = unique(removeall(di, disjuncts(ci)) +
                              removeall(dj, disjuncts(cj)))
                clauses.append(associate('|', dnew))
    return clauses
def pl_resolve ( ci , cj ) : clauses = [ ] for di in disjuncts ( ci ) : for dj in disjuncts ( cj ) : if di == ~ dj or ~ di == dj : dnew = unique ( removeall ( di , disjuncts ( ci ) ) + removeall ( dj , disjuncts ( cj ) ) ) clauses . append ( associate ( '|' , dnew ) ) return clauses
Return all clauses that can be obtained by resolving clauses ci and cj.
    >>> for res in pl_resolve(to_cnf(A|B|C), to_cnf(~B|~C|F)):
    ...    ppset(disjuncts(res))
    set([A, C, F, ~C])
    set([A, B, F, ~B])
Return all clauses that can be obtained by resolving clauses ci and cj . >>> for res in pl_resolve ( to_cnf ( A|B|C ) to_cnf ( ~B|~C|F )) : ... ppset ( disjuncts ( res )) set ( [ A C F ~C ] ) set ( [ A B F ~B ] )