def nat.le_zero
import bend-osdev-algo@0.1.0.0/PROOF.bend as PROOFimport Base
70def nat.le_zero(x: Nat) -> {Nat.is_le(0n, x) == True{} : Bool}:
71 match x:
72 case 0n:
73 {==}
74 case 1n+p:
75 {==}
import bend-osdev-algo@0.1.0.0/PROOF.bend as PROOFimport Base
70def nat.le_zero(x: Nat) -> {Nat.is_le(0n, x) == True{} : Bool}:
71 match x:
72 case 0n:
73 {==}
74 case 1n+p:
75 {==}