At: zero rank all vars11111 1. L: Sequent List 2. eqS: {Sequent=} 3. eqF: {Formula=} 4. sL.((s) = 0) 5. hyp: Formula List 6. concl: Formula List 7. < hyp,concl > (eqS) L 8. z: Formula 9. z(eqF) hyp 10. (hyp)+(concl) = 0 11. M: Formula List 12. N: Formula List 13. hyp = (M @ (z.N))
v:Var. z = v By: MoveToEnd -4
THEN
HypSubst -2 -1
THEN
AbReduce -1 Generated subgoal: