notxifxfalsetrueandxyifxyfalseorxyifxtrueyimpliesxyifxytrue=xxtrue=xyifxynotyiftruexyxiffalsexyyifxxifxfalsetruetrue=xyifxyifyfalsetrue2.11not111if3111213false00true00and222122or222122implies212112=212122notxifxfalsetrueiftruexyxiffalsexyyifxxifxfalsetruetrue1not1221if3212223false00true00iftruexyxiffalsexyyifxxifxfalsetruetrue1true011false021if300AProVEAProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Statistics for single proof: 100.00 % (4 real / 0 unknown / 0 assumptions / 4 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe