const SNo : set prop const In : set set prop term iIn = In infix iIn 2000 2000 const SNoS_ : set set const SNoLev : set set const mul_SNo : set set set term * = mul_SNo infix * 2291 2290 const SNoCutP : set set prop const SNoL : set set const add_SNo : set set set term + = add_SNo infix + 2281 2280 const minus_SNo : set set term - = minus_SNo const SNoR : set set const SNoCut : set set set const SNoLe : set set prop term <= = SNoLe infix <= 2020 2020 const SNoLt : set set prop term < = SNoLt infix < 2020 2020 lemma !x:set.!y:set.!z:set.!w:set.!u:set.!v:set.!x2:set.SNo x -> SNo y -> SNo z -> (!y2:set.y2 iIn SNoS_ (SNoLev x) -> y2 * y * z = (y2 * y) * z) -> (!y2:set.y2 iIn SNoS_ (SNoLev y) -> x * y2 * z = (x * y2) * z) -> (!y2:set.y2 iIn SNoS_ (SNoLev z) -> x * y * y2 = (x * y) * y2) -> (!y2:set.y2 iIn SNoS_ (SNoLev x) -> !z2:set.z2 iIn SNoS_ (SNoLev y) -> y2 * z2 * z = (y2 * z2) * z) -> (!y2:set.y2 iIn SNoS_ (SNoLev x) -> !z2:set.z2 iIn SNoS_ (SNoLev z) -> y2 * y * z2 = (y2 * y) * z2) -> (!y2:set.y2 iIn SNoS_ (SNoLev y) -> !z2:set.z2 iIn SNoS_ (SNoLev z) -> x * y2 * z2 = (x * y2) * z2) -> (!y2:set.y2 iIn SNoS_ (SNoLev x) -> !z2:set.z2 iIn SNoS_ (SNoLev y) -> !w2:set.w2 iIn SNoS_ (SNoLev z) -> y2 * z2 * w2 = (y2 * z2) * w2) -> SNo (x * y) -> SNoCutP w u -> (!y2:set.y2 iIn w -> !P:prop.(!z2:set.z2 iIn SNoL x -> !w2:set.w2 iIn SNoL (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR x -> !w2:set.w2 iIn SNoR (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> P) -> (!y2:set.y2 iIn u -> !P:prop.(!z2:set.z2 iIn SNoL x -> !w2:set.w2 iIn SNoR (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR x -> !w2:set.w2 iIn SNoL (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> P) -> x * y * z = SNoCut w u -> SNoCutP v x2 -> (!y2:set.y2 iIn v -> !P:prop.(!z2:set.z2 iIn SNoL (x * y) -> !w2:set.w2 iIn SNoL z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR (x * y) -> !w2:set.w2 iIn SNoR z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> P) -> (!y2:set.y2 iIn x2 -> !P:prop.(!z2:set.z2 iIn SNoL (x * y) -> !w2:set.w2 iIn SNoR z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR (x * y) -> !w2:set.w2 iIn SNoL z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> P) -> (x * y) * z = SNoCut v x2 -> (!y2:set.!z2:set.SNo y2 -> SNo z2 -> !w2:set.w2 iIn SNoL (z2 * y2) -> !P:prop.(!u2:set.u2 iIn SNoL y2 -> !v2:set.v2 iIn SNoL z2 -> (w2 + v2 * u2) <= z2 * u2 + v2 * y2 -> P) -> (!u2:set.u2 iIn SNoR y2 -> !v2:set.v2 iIn SNoR z2 -> (w2 + v2 * u2) <= z2 * u2 + v2 * y2 -> P) -> P) -> (!y2:set.!z2:set.SNo y2 -> SNo z2 -> !w2:set.w2 iIn SNoR (z2 * y2) -> !P:prop.(!u2:set.u2 iIn SNoL y2 -> !v2:set.v2 iIn SNoR z2 -> (z2 * u2 + v2 * y2) <= w2 + v2 * u2 -> P) -> (!u2:set.u2 iIn SNoR y2 -> !v2:set.v2 iIn SNoL z2 -> (z2 * u2 + v2 * y2) <= w2 + v2 * u2 -> P) -> P) -> (!y2:set.!z2:set.!w2:set.!u2:set.SNo y2 -> SNo z2 -> SNo w2 -> SNo u2 -> w2 < y2 -> u2 < z2 -> (z2 * w2 + u2 * y2) < z2 * y2 + u2 * w2) -> (!y2:set.!z2:set.!w2:set.!u2:set.SNo y2 -> SNo z2 -> SNo w2 -> SNo u2 -> w2 <= y2 -> u2 <= z2 -> (z2 * w2 + u2 * y2) <= z2 * y2 + u2 * w2) -> (!y2:set.y2 iIn SNoS_ (SNoLev x) -> (y2 * y) * z = y2 * y * z) -> (!y2:set.y2 iIn SNoS_ (SNoLev y) -> (x * y2) * z = x * y2 * z) -> (!y2:set.y2 iIn SNoS_ (SNoLev z) -> (x * y) * y2 = x * y * y2) -> (!y2:set.y2 iIn SNoS_ (SNoLev y) -> !z2:set.z2 iIn SNoS_ (SNoLev x) -> (z2 * y2) * z = z2 * y2 * z) -> (!y2:set.y2 iIn SNoS_ (SNoLev z) -> !z2:set.z2 iIn SNoS_ (SNoLev x) -> (z2 * y) * y2 = z2 * y * y2) -> (!y2:set.y2 iIn SNoS_ (SNoLev z) -> !z2:set.z2 iIn SNoS_ (SNoLev y) -> (x * z2) * y2 = x * z2 * y2) -> (!y2:set.y2 iIn SNoS_ (SNoLev z) -> !z2:set.z2 iIn SNoS_ (SNoLev y) -> !w2:set.w2 iIn SNoS_ (SNoLev x) -> (w2 * z2) * y2 = w2 * z2 * y2) -> SNoCut w u = SNoCut v x2 var x:set var y:set var z:set var w:set var u:set var v:set var x2:set hyp SNo x hyp SNo y hyp SNo z hyp !y2:set.y2 iIn SNoS_ (SNoLev x) -> y2 * y * z = (y2 * y) * z hyp !y2:set.y2 iIn SNoS_ (SNoLev y) -> x * y2 * z = (x * y2) * z hyp !y2:set.y2 iIn SNoS_ (SNoLev z) -> x * y * y2 = (x * y) * y2 hyp !y2:set.y2 iIn SNoS_ (SNoLev x) -> !z2:set.z2 iIn SNoS_ (SNoLev y) -> y2 * z2 * z = (y2 * z2) * z hyp !y2:set.y2 iIn SNoS_ (SNoLev x) -> !z2:set.z2 iIn SNoS_ (SNoLev z) -> y2 * y * z2 = (y2 * y) * z2 hyp !y2:set.y2 iIn SNoS_ (SNoLev y) -> !z2:set.z2 iIn SNoS_ (SNoLev z) -> x * y2 * z2 = (x * y2) * z2 hyp !y2:set.y2 iIn SNoS_ (SNoLev x) -> !z2:set.z2 iIn SNoS_ (SNoLev y) -> !w2:set.w2 iIn SNoS_ (SNoLev z) -> y2 * z2 * w2 = (y2 * z2) * w2 hyp SNo (x * y) hyp SNoCutP w u hyp !y2:set.y2 iIn w -> !P:prop.(!z2:set.z2 iIn SNoL x -> !w2:set.w2 iIn SNoL (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR x -> !w2:set.w2 iIn SNoR (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> P hyp !y2:set.y2 iIn u -> !P:prop.(!z2:set.z2 iIn SNoL x -> !w2:set.w2 iIn SNoR (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR x -> !w2:set.w2 iIn SNoL (y * z) -> y2 = z2 * y * z + x * w2 + - z2 * w2 -> P) -> P hyp x * y * z = SNoCut w u hyp SNoCutP v x2 hyp !y2:set.y2 iIn v -> !P:prop.(!z2:set.z2 iIn SNoL (x * y) -> !w2:set.w2 iIn SNoL z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR (x * y) -> !w2:set.w2 iIn SNoR z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> P hyp !y2:set.y2 iIn x2 -> !P:prop.(!z2:set.z2 iIn SNoL (x * y) -> !w2:set.w2 iIn SNoR z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> (!z2:set.z2 iIn SNoR (x * y) -> !w2:set.w2 iIn SNoL z -> y2 = z2 * z + (x * y) * w2 + - z2 * w2 -> P) -> P hyp (x * y) * z = SNoCut v x2 hyp !y2:set.!z2:set.SNo y2 -> SNo z2 -> !w2:set.w2 iIn SNoL (z2 * y2) -> !P:prop.(!u2:set.u2 iIn SNoL y2 -> !v2:set.v2 iIn SNoL z2 -> (w2 + v2 * u2) <= z2 * u2 + v2 * y2 -> P) -> (!u2:set.u2 iIn SNoR y2 -> !v2:set.v2 iIn SNoR z2 -> (w2 + v2 * u2) <= z2 * u2 + v2 * y2 -> P) -> P hyp !y2:set.!z2:set.SNo y2 -> SNo z2 -> !w2:set.w2 iIn SNoR (z2 * y2) -> !P:prop.(!u2:set.u2 iIn SNoL y2 -> !v2:set.v2 iIn SNoR z2 -> (z2 * u2 + v2 * y2) <= w2 + v2 * u2 -> P) -> (!u2:set.u2 iIn SNoR y2 -> !v2:set.v2 iIn SNoL z2 -> (z2 * u2 + v2 * y2) <= w2 + v2 * u2 -> P) -> P hyp !y2:set.!z2:set.!w2:set.!u2:set.SNo y2 -> SNo z2 -> SNo w2 -> SNo u2 -> w2 < y2 -> u2 < z2 -> (z2 * w2 + u2 * y2) < z2 * y2 + u2 * w2 hyp !y2:set.!z2:set.!w2:set.!u2:set.SNo y2 -> SNo z2 -> SNo w2 -> SNo u2 -> w2 <= y2 -> u2 <= z2 -> (z2 * w2 + u2 * y2) <= z2 * y2 + u2 * w2 hyp !y2:set.y2 iIn SNoS_ (SNoLev x) -> (y2 * y) * z = y2 * y * z hyp !y2:set.y2 iIn SNoS_ (SNoLev y) -> (x * y2) * z = x * y2 * z hyp !y2:set.y2 iIn SNoS_ (SNoLev z) -> (x * y) * y2 = x * y * y2 hyp !y2:set.y2 iIn SNoS_ (SNoLev y) -> !z2:set.z2 iIn SNoS_ (SNoLev x) -> (z2 * y2) * z = z2 * y2 * z hyp !y2:set.y2 iIn SNoS_ (SNoLev z) -> !z2:set.z2 iIn SNoS_ (SNoLev x) -> (z2 * y) * y2 = z2 * y * y2 claim (!y2:set.y2 iIn SNoS_ (SNoLev z) -> !z2:set.z2 iIn SNoS_ (SNoLev y) -> (x * z2) * y2 = x * z2 * y2) -> SNoCut w u = SNoCut v x2