haftmann [Mon, 29 Nov 2010 12:15:14 +0100] rev 40814
moved generic definitions about (partial) equivalence relations from Quotient to Equiv_Relations;
moved generic definitions about relations from Quotient.thy to Predicate;
consistent use of R rather than E for relations;
more natural deduction rules
haftmann [Mon, 29 Nov 2010 12:14:43 +0100] rev 40812
moved generic definitions about (partial) equivalence relations from Quotient to Equiv_Relations;
more natural deduction rules;
replaced slightly odd locale equiv by plain definition