CONDITIONAL PROOF
cstl-cla.semo.edu/hhill/PL120/notes/conditional proof.htmconditional proof, you are allowed to make multiple assumptions. You may both nest your assumptions, that is, make one assumption within the scope of another assumption, and you can make a second assumption after having discharged your first assumption. For example, nesting assumptions makes it rather easy to show that F ∴D →(E →