ProofShape.and_eq_l: law of lawful-arrays@0.1.0.0 Import: import lawful-arrays@0.1.0.0/proof_shape.bend as ProofShape Lines 70-75 of lawful-arrays@0.1.0.0/proof_shape.bend: https://jend.leeeet.dev/read.txt?path=lawful-arrays@0.1.0.0/proof_shape.bend&start_line=70&end_line=75 import Base law and_eq_l: for -a: Bool for -c: Bool for -b: Bool for e: {a == c : Bool} {Bool.and(a, b) == Bool.and(c, b) : Bool} Uses (2): https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and