impliesnotxyorxyimpliesnotxoryzimpliesyorxzimpliesxoryzoryimpliesxz2.0impliesnotxoryzimpliesyorxzimpliesxoryzimpliesxztrue1implies22112not121or22122impliesnotxoryzimpliesyorxzimpliesxoryzimpliesxz1implies212not10or2112impliesnotxoryzimpliesyorxz1implies21112not1111or211
AProVE
20cf63ea9f01bf40524adf2af9b95e39102e7dab rene 20110328 unpublished dirty
http://aprove.informatik.rwth-aachen.de/
John
Doe