Exercise logic.propositional.consequence
Description
Prove that formula is a logical consequence of a set of formulas
![](http://ideas.cs.uu.nl/images/external.png)
((~r /\ q) || r) /\ ((~r /\ q) || ~q) => p -> (q || r)
ready: no
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Environment
initial=TList [TCon logic1.equivalent [TCon logic1.not [TVar "r"],TVar "q"]]
Path 1
path | [0, 0, 4, 0, 0, 1, 3, 3, 0, 1, 0, 5, 6, 5, 4, 0, 0, 0, 1, 5, 2] |
steps | 21 |
major rules | 3 |
active labels | |
enter consequence,
initial,
navigator.down,
navigator.down,
enter cnf,
check,
enter eliminateimplequiv,
logic.propositional.defequiv,
exit eliminateimplequiv,
check,
enter simplify,
navigator.down,
navigator.right,
navigator.down,
logic.propositional.notnot,
navigator.up,
navigator.up,
exit simplify,
check,
enter distror,
logic.propositional.oroverand