Theorem: collapseSRSElement_G1_soundness
Proof state before:
case intro.a.left.e_a.e_f.h.e_a.e_a.e_a.e_f.h.e_a
F : Type
inst✝¹ : Field F
𝓟 : AGMProofSystemInstantiation F
hTypeIII : 𝓟.Identified_Proof_Elems = []
inst✝ : DecidableEq 𝓟.SRSElements_G1
twin1 twin2 : 𝓟.SRSElements_G1
not_same : twin1 ≠ twin2
hcount1 : List.count twin1 𝓟.ListSRSElements_G1 = 1
hcount2 : List.count twin2 𝓟.ListSRSElements_G1 = 1
interchangeable' :
  ∀ (stmt : 𝓟.Stmt) (check_idx : 𝓟.EqualityChecks) (pairing : 𝓟.Pairings check_idx),
    𝓟.verificationPairingSRS_G1 stmt check_idx pairing twin1 = 𝓟.verificationPairingSRS_G1 stmt check_idx pairing twin2
Wit : Type
relation : 𝓟.Stmt → Wit → Prop
extractor : AGMProofSystemInstantiation.Prover F 𝓟 → Wit
stmt : (collapseSRSElement_G1 𝓟 twin1 twin2).Stmt
agm : AGMProofSystemInstantiation.Prover F (collapseSRSElement_G1 𝓟 twin1 twin2)
check_idx : 𝓟.EqualityChecks
pairing : 𝓟.Pairings check_idx
proof_elem : 𝓟.Proof_G1
interchangeable : agm.1 proof_elem twin1 = agm.1 proof_elem twin2
⊢ (List.map (fun SRS_elem => MvPolynomial.C (agm.1 proof_elem SRS_elem) * 𝓟.SRSElementValue_G1 SRS_elem)
        𝓟.ListSRSElements_G1).sum =
    ↑(List.count twin1 𝓟.ListSRSElements_G1) *
        (MvPolynomial.C (agm.1 proof_elem twin1) * (𝓟.SRSElementValue_G1 twin1 + 𝓟.SRSElementValue_G1 twin2) -
          if twin1 = twin2 then 0 else MvPolynomial.C (agm.1 proof_elem twin1) * 𝓟.SRSElementValue_G1 twin1) +
      (-(↑(List.count twin2 𝓟.ListSRSElements_G1) *
            (MvPolynomial.C (agm.1 proof_elem twin2) * 𝓟.SRSElementValue_G1 twin2)) +
        (List.map (fun SRS_elem => MvPolynomial.C (agm.1 proof_elem SRS_elem) * 𝓟.SRSElementValue_G1 SRS_elem)
            𝓟.ListSRSElements_G1).sum)
Tactic:
simp only [hcount1, Nat.cast_one, interchangeable, not_same, ↓reduceIte, one_mul, hcount2]
Proof state after:
case intro.a.left.e_a.e_f.h.e_a.e_a.e_a.e_f.h.e_a
F : Type
inst✝¹ : Field F
𝓟 : AGMProofSystemInstantiation F
hTypeIII : 𝓟.Identified_Proof_Elems = []
inst✝ : DecidableEq 𝓟.SRSElements_G1
twin1 twin2 : 𝓟.SRSElements_G1
not_same : twin1 ≠ twin2
hcount1 : List.count twin1 𝓟.ListSRSElements_G1 = 1
hcount2 : List.count twin2 𝓟.ListSRSElements_G1 = 1
interchangeable' :
  ∀ (stmt : 𝓟.Stmt) (check_idx : 𝓟.EqualityChecks) (pairing : 𝓟.Pairings check_idx),
    𝓟.verificationPairingSRS_G1 stmt check_idx pairing twin1 = 𝓟.verificationPairingSRS_G1 stmt check_idx pairing twin2
Wit : Type
relation : 𝓟.Stmt → Wit → Prop
extractor : AGMProofSystemInstantiation.Prover F 𝓟 → Wit
stmt : (collapseSRSElement_G1 𝓟 twin1 twin2).Stmt
agm : AGMProofSystemInstantiation.Prover F (collapseSRSElement_G1 𝓟 twin1 twin2)
check_idx : 𝓟.EqualityChecks
pairing : 𝓟.Pairings check_idx
proof_elem : 𝓟.Proof_G1
interchangeable : agm.1 proof_elem twin1 = agm.1 proof_elem twin2
⊢ (List.map (fun SRS_elem => MvPolynomial.C (agm.1 proof_elem SRS_elem) * 𝓟.SRSElementValue_G1 SRS_elem)
        𝓟.ListSRSElements_G1).sum =
    MvPolynomial.C (agm.1 proof_elem twin2) * (𝓟.SRSElementValue_G1 twin1 + 𝓟.SRSElementValue_G1 twin2) -
        MvPolynomial.C (agm.1 proof_elem twin2) * 𝓟.SRSElementValue_G1 twin1 +
      (-(MvPolynomial.C (agm.1 proof_elem twin2) * 𝓟.SRSElementValue_G1 twin2) +
        (List.map (fun SRS_elem => MvPolynomial.C (agm.1 proof_elem SRS_elem) * 𝓟.SRSElementValue_G1 SRS_elem)
            𝓟.ListSRSElements_G1).sum)