[1: cases (us_phi4 ?? Gw 〈(a i),l〉); apply H2; clear H2 H;
apply (Hma i); rewrite > sym_plus in H1; apply (le_w_plus mb); assumption;
|2: apply Hmb; apply (le_w_plus ma); assumption]
- |2: simplify; apply (le_transitive ???? Lax Lxb);
+ |2: simplify; apply (le_transitive (a i) ?? Lax Lxb);
|3: simplify; repeat split; try assumption;
- [1: apply (le_transitive ???? Lax Lxb);
- |2: intro X; cases (os_coreflexive ?? X)]]
+ [1: apply (le_transitive ?? (b i) Lax Lxb);
+ |2: intro X; cases (exc_coreflexive (a i) X)]]
|1: apply HW; exists[apply l] simplify; split;
[1: apply (us_phi1 ?? Gw); unfold; apply eq_reflexive;
|2: apply Hma; rewrite > sym_plus in H1; apply (le_w_plus mb); assumption;]]