def tr.len_eq
bend-osdev-mode-core@0.1.0.0 · PROOF.bend:513
import bend-osdev-mode-core@0.1.0.0/PROOF.bend as PROOF
import Base
import bend-osdev-mode-core@0.1.0.0/mode_core.bend as M
import bend-osdev-u32@0.1.0.0/LAWS.bend as UL
513def tr.len_eq(+bs: List<&2, M.CmBlock>) -> {List.length(&2, M.CmBlock, bs) == M.cm.blocks.len(bs) : Nat}:
514 Equal.sym(Nat, M.cm.blocks.len(bs), List.length(&2, M.CmBlock, bs), Equal.trans(Nat, M.cm.blocks.len.go(bs, 0n), Nat.add(List.length(&2, M.CmBlock, bs), 0n), List.length(&2, M.CmBlock, bs), tr.len_go(bs, 0n), UL.nat_add_zero(List.length(&2, M.CmBlock, bs))))