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Theorem addsdilem3 28545
Description: Lemma for addsdi 28547. Show one of the equalities involved in the final expression. (Contributed by Scott Fenton, 9-Mar-2025.)
Hypotheses
Ref Expression
addsdilem3.1 (𝜑 → 𝐴 ∈ No)
addsdilem3.2 (𝜑 → 𝐵 ∈ No)
addsdilem3.3 (𝜑 → 𝐶 ∈ No)
addsdilem3.4 (𝜑 → ∀𝑥𝑂 ∈ ((L‘𝐴) ∪ (R‘𝐴))(𝑥𝑂 ·s (𝐵 +s 𝐶)) = ((𝑥𝑂 ·s 𝐵) +s (𝑥𝑂 ·s 𝐶)))
addsdilem3.5 (𝜑 → ∀𝑦𝑂 ∈ ((L‘𝐵) ∪ (R‘𝐵))(𝐴 ·s (𝑦𝑂 +s 𝐶)) = ((𝐴 ·s 𝑦𝑂) +s (𝐴 ·s 𝐶)))
addsdilem3.6 (𝜑 → ∀𝑥𝑂 ∈ ((L‘𝐴) ∪ (R‘𝐴))∀𝑦𝑂 ∈ ((L‘𝐵) ∪ (R‘𝐵))(𝑥𝑂 ·s (𝑦𝑂 +s 𝐶)) = ((𝑥𝑂 ·s 𝑦𝑂) +s (𝑥𝑂 ·s 𝐶)))
addsdilem3.7 (𝜓 → 𝑋 ∈ ((L‘𝐴) ∪ (R‘𝐴)))
addsdilem3.8 (𝜓 → 𝑌 ∈ ((L‘𝐵) ∪ (R‘𝐵)))
Assertion
Ref Expression
addsdilem3 ((𝜑 ∧ 𝜓) → (((𝑋 ·s (𝐵 +s 𝐶)) +s (𝐴 ·s (𝑌 +s 𝐶))) −s (𝑋 ·s (𝑌 +s 𝐶))) = ((((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) −s (𝑋 ·s 𝑌)) +s (𝐴 ·s 𝐶)))
Distinct variable groups:   𝐴,𝑥𝑂,𝑦𝑂   𝐵,𝑥𝑂,𝑦𝑂   𝐶,𝑥𝑂,𝑦𝑂   𝑋,𝑥𝑂,𝑦𝑂   𝑌,𝑦𝑂
Allowed substitution hints:   𝜑(𝑥𝑂, 𝑦𝑂)   𝜓(𝑥𝑂, 𝑦𝑂)   𝑌(𝑥𝑂)

Proof of Theorem addsdilem3
StepHypRef Expression
1 oveq1 7428 . . . . . 6 (𝑥𝑂 = 𝑋 → (𝑥𝑂 ·s (𝐵 +s 𝐶)) = (𝑋 ·s (𝐵 +s 𝐶)))
2 oveq1 7428 . . . . . . 7 (𝑥𝑂 = 𝑋 → (𝑥𝑂 ·s 𝐵) = (𝑋 ·s 𝐵))
3 oveq1 7428 . . . . . . 7 (𝑥𝑂 = 𝑋 → (𝑥𝑂 ·s 𝐶) = (𝑋 ·s 𝐶))
42, 3oveq12d 7439 . . . . . 6 (𝑥𝑂 = 𝑋 → ((𝑥𝑂 ·s 𝐵) +s (𝑥𝑂 ·s 𝐶)) = ((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)))
51, 4eqeq12d 2776 . . . . 5 (𝑥𝑂 = 𝑋 → ((𝑥𝑂 ·s (𝐵 +s 𝐶)) = ((𝑥𝑂 ·s 𝐵) +s (𝑥𝑂 ·s 𝐶)) ↔ (𝑋 ·s (𝐵 +s 𝐶)) = ((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶))))
6 addsdilem3.4 . . . . . 6 (𝜑 → ∀𝑥𝑂 ∈ ((L‘𝐴) ∪ (R‘𝐴))(𝑥𝑂 ·s (𝐵 +s 𝐶)) = ((𝑥𝑂 ·s 𝐵) +s (𝑥𝑂 ·s 𝐶)))
76adantr 486 . . . . 5 ((𝜑 ∧ 𝜓) → ∀𝑥𝑂 ∈ ((L‘𝐴) ∪ (R‘𝐴))(𝑥𝑂 ·s (𝐵 +s 𝐶)) = ((𝑥𝑂 ·s 𝐵) +s (𝑥𝑂 ·s 𝐶)))
8 addsdilem3.7 . . . . . 6 (𝜓 → 𝑋 ∈ ((L‘𝐴) ∪ (R‘𝐴)))
98adantl 487 . . . . 5 ((𝜑 ∧ 𝜓) → 𝑋 ∈ ((L‘𝐴) ∪ (R‘𝐴)))
105, 7, 9rspcdva 3577 . . . 4 ((𝜑 ∧ 𝜓) → (𝑋 ·s (𝐵 +s 𝐶)) = ((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)))
11 oveq1 7428 . . . . . . 7 (𝑦𝑂 = 𝑌 → (𝑦𝑂 +s 𝐶) = (𝑌 +s 𝐶))
1211oveq2d 7437 . . . . . 6 (𝑦𝑂 = 𝑌 → (𝐴 ·s (𝑦𝑂 +s 𝐶)) = (𝐴 ·s (𝑌 +s 𝐶)))
13 oveq2 7429 . . . . . . 7 (𝑦𝑂 = 𝑌 → (𝐴 ·s 𝑦𝑂) = (𝐴 ·s 𝑌))
1413oveq1d 7436 . . . . . 6 (𝑦𝑂 = 𝑌 → ((𝐴 ·s 𝑦𝑂) +s (𝐴 ·s 𝐶)) = ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶)))
1512, 14eqeq12d 2776 . . . . 5 (𝑦𝑂 = 𝑌 → ((𝐴 ·s (𝑦𝑂 +s 𝐶)) = ((𝐴 ·s 𝑦𝑂) +s (𝐴 ·s 𝐶)) ↔ (𝐴 ·s (𝑌 +s 𝐶)) = ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))))
16 addsdilem3.5 . . . . . 6 (𝜑 → ∀𝑦𝑂 ∈ ((L‘𝐵) ∪ (R‘𝐵))(𝐴 ·s (𝑦𝑂 +s 𝐶)) = ((𝐴 ·s 𝑦𝑂) +s (𝐴 ·s 𝐶)))
1716adantr 486 . . . . 5 ((𝜑 ∧ 𝜓) → ∀𝑦𝑂 ∈ ((L‘𝐵) ∪ (R‘𝐵))(𝐴 ·s (𝑦𝑂 +s 𝐶)) = ((𝐴 ·s 𝑦𝑂) +s (𝐴 ·s 𝐶)))
18 addsdilem3.8 . . . . . 6 (𝜓 → 𝑌 ∈ ((L‘𝐵) ∪ (R‘𝐵)))
1918adantl 487 . . . . 5 ((𝜑 ∧ 𝜓) → 𝑌 ∈ ((L‘𝐵) ∪ (R‘𝐵)))
2015, 17, 19rspcdva 3577 . . . 4 ((𝜑 ∧ 𝜓) → (𝐴 ·s (𝑌 +s 𝐶)) = ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶)))
2110, 20oveq12d 7439 . . 3 ((𝜑 ∧ 𝜓) → ((𝑋 ·s (𝐵 +s 𝐶)) +s (𝐴 ·s (𝑌 +s 𝐶))) = (((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))))
22 oveq1 7428 . . . . 5 (𝑥𝑂 = 𝑋 → (𝑥𝑂 ·s (𝑦𝑂 +s 𝐶)) = (𝑋 ·s (𝑦𝑂 +s 𝐶)))
23 oveq1 7428 . . . . . 6 (𝑥𝑂 = 𝑋 → (𝑥𝑂 ·s 𝑦𝑂) = (𝑋 ·s 𝑦𝑂))
2423, 3oveq12d 7439 . . . . 5 (𝑥𝑂 = 𝑋 → ((𝑥𝑂 ·s 𝑦𝑂) +s (𝑥𝑂 ·s 𝐶)) = ((𝑋 ·s 𝑦𝑂) +s (𝑋 ·s 𝐶)))
2522, 24eqeq12d 2776 . . . 4 (𝑥𝑂 = 𝑋 → ((𝑥𝑂 ·s (𝑦𝑂 +s 𝐶)) = ((𝑥𝑂 ·s 𝑦𝑂) +s (𝑥𝑂 ·s 𝐶)) ↔ (𝑋 ·s (𝑦𝑂 +s 𝐶)) = ((𝑋 ·s 𝑦𝑂) +s (𝑋 ·s 𝐶))))
2611oveq2d 7437 . . . . 5 (𝑦𝑂 = 𝑌 → (𝑋 ·s (𝑦𝑂 +s 𝐶)) = (𝑋 ·s (𝑌 +s 𝐶)))
27 oveq2 7429 . . . . . 6 (𝑦𝑂 = 𝑌 → (𝑋 ·s 𝑦𝑂) = (𝑋 ·s 𝑌))
2827oveq1d 7436 . . . . 5 (𝑦𝑂 = 𝑌 → ((𝑋 ·s 𝑦𝑂) +s (𝑋 ·s 𝐶)) = ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶)))
2926, 28eqeq12d 2776 . . . 4 (𝑦𝑂 = 𝑌 → ((𝑋 ·s (𝑦𝑂 +s 𝐶)) = ((𝑋 ·s 𝑦𝑂) +s (𝑋 ·s 𝐶)) ↔ (𝑋 ·s (𝑌 +s 𝐶)) = ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶))))
30 addsdilem3.6 . . . . 5 (𝜑 → ∀𝑥𝑂 ∈ ((L‘𝐴) ∪ (R‘𝐴))∀𝑦𝑂 ∈ ((L‘𝐵) ∪ (R‘𝐵))(𝑥𝑂 ·s (𝑦𝑂 +s 𝐶)) = ((𝑥𝑂 ·s 𝑦𝑂) +s (𝑥𝑂 ·s 𝐶)))
3130adantr 486 . . . 4 ((𝜑 ∧ 𝜓) → ∀𝑥𝑂 ∈ ((L‘𝐴) ∪ (R‘𝐴))∀𝑦𝑂 ∈ ((L‘𝐵) ∪ (R‘𝐵))(𝑥𝑂 ·s (𝑦𝑂 +s 𝐶)) = ((𝑥𝑂 ·s 𝑦𝑂) +s (𝑥𝑂 ·s 𝐶)))
3225, 29, 31, 9, 19rspc2dv 3590 . . 3 ((𝜑 ∧ 𝜓) → (𝑋 ·s (𝑌 +s 𝐶)) = ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶)))
3321, 32oveq12d 7439 . 2 ((𝜑 ∧ 𝜓) → (((𝑋 ·s (𝐵 +s 𝐶)) +s (𝐴 ·s (𝑌 +s 𝐶))) −s (𝑋 ·s (𝑌 +s 𝐶))) = ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶))))
34 leftssno 28265 . . . . . . . . . . 11 (L‘𝐴) ⊆ No
35 rightssno 28266 . . . . . . . . . . 11 (R‘𝐴) ⊆ No
3634, 35unssi 4189 . . . . . . . . . 10 ((L‘𝐴) ∪ (R‘𝐴)) ⊆ No
3736, 8sselid 3906 . . . . . . . . 9 (𝜓 → 𝑋 ∈ No)
3837adantl 487 . . . . . . . 8 ((𝜑 ∧ 𝜓) → 𝑋 ∈ No)
39 addsdilem3.2 . . . . . . . . 9 (𝜑 → 𝐵 ∈ No)
4039adantr 486 . . . . . . . 8 ((𝜑 ∧ 𝜓) → 𝐵 ∈ No)
4138, 40mulscld 28527 . . . . . . 7 ((𝜑 ∧ 𝜓) → (𝑋 ·s 𝐵) ∈ No)
42 addsdilem3.3 . . . . . . . . 9 (𝜑 → 𝐶 ∈ No)
4342adantr 486 . . . . . . . 8 ((𝜑 ∧ 𝜓) → 𝐶 ∈ No)
4438, 43mulscld 28527 . . . . . . 7 ((𝜑 ∧ 𝜓) → (𝑋 ·s 𝐶) ∈ No)
45 pncans 28464 . . . . . . 7 (((𝑋 ·s 𝐵) ∈ No ∧ (𝑋 ·s 𝐶) ∈ No) → (((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) −s (𝑋 ·s 𝐶)) = (𝑋 ·s 𝐵))
4641, 44, 45syl2anc 596 . . . . . 6 ((𝜑 ∧ 𝜓) → (((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) −s (𝑋 ·s 𝐶)) = (𝑋 ·s 𝐵))
4746oveq1d 7436 . . . . 5 ((𝜑 ∧ 𝜓) → ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) −s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) = ((𝑋 ·s 𝐵) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))))
4841, 44addscld 28372 . . . . . 6 ((𝜑 ∧ 𝜓) → ((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) ∈ No)
49 addsdilem3.1 . . . . . . . . 9 (𝜑 → 𝐴 ∈ No)
5049adantr 486 . . . . . . . 8 ((𝜑 ∧ 𝜓) → 𝐴 ∈ No)
51 leftssno 28265 . . . . . . . . . . 11 (L‘𝐵) ⊆ No
52 rightssno 28266 . . . . . . . . . . 11 (R‘𝐵) ⊆ No
5351, 52unssi 4189 . . . . . . . . . 10 ((L‘𝐵) ∪ (R‘𝐵)) ⊆ No
5453, 18sselid 3906 . . . . . . . . 9 (𝜓 → 𝑌 ∈ No)
5554adantl 487 . . . . . . . 8 ((𝜑 ∧ 𝜓) → 𝑌 ∈ No)
5650, 55mulscld 28527 . . . . . . 7 ((𝜑 ∧ 𝜓) → (𝐴 ·s 𝑌) ∈ No)
5749, 42mulscld 28527 . . . . . . . 8 (𝜑 → (𝐴 ·s 𝐶) ∈ No)
5857adantr 486 . . . . . . 7 ((𝜑 ∧ 𝜓) → (𝐴 ·s 𝐶) ∈ No)
5956, 58addscld 28372 . . . . . 6 ((𝜑 ∧ 𝜓) → ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶)) ∈ No)
6048, 59, 44addsubsd 28474 . . . . 5 ((𝜑 ∧ 𝜓) → ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s (𝑋 ·s 𝐶)) = ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) −s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))))
6141, 56, 58addsassd 28398 . . . . 5 ((𝜑 ∧ 𝜓) → (((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) +s (𝐴 ·s 𝐶)) = ((𝑋 ·s 𝐵) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))))
6247, 60, 613eqtr4d 2805 . . . 4 ((𝜑 ∧ 𝜓) → ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s (𝑋 ·s 𝐶)) = (((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) +s (𝐴 ·s 𝐶)))
6362oveq1d 7436 . . 3 ((𝜑 ∧ 𝜓) → (((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s (𝑋 ·s 𝐶)) −s (𝑋 ·s 𝑌)) = ((((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) +s (𝐴 ·s 𝐶)) −s (𝑋 ·s 𝑌)))
6448, 59addscld 28372 . . . . 5 ((𝜑 ∧ 𝜓) → (((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) ∈ No)
6537, 54mulscld 28527 . . . . . 6 (𝜓 → (𝑋 ·s 𝑌) ∈ No)
6665adantl 487 . . . . 5 ((𝜑 ∧ 𝜓) → (𝑋 ·s 𝑌) ∈ No)
6764, 44, 66subsubs4d 28486 . . . 4 ((𝜑 ∧ 𝜓) → (((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s (𝑋 ·s 𝐶)) −s (𝑋 ·s 𝑌)) = ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s ((𝑋 ·s 𝐶) +s (𝑋 ·s 𝑌))))
6844, 66addscomd 28359 . . . . 5 ((𝜑 ∧ 𝜓) → ((𝑋 ·s 𝐶) +s (𝑋 ·s 𝑌)) = ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶)))
6968oveq2d 7437 . . . 4 ((𝜑 ∧ 𝜓) → ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s ((𝑋 ·s 𝐶) +s (𝑋 ·s 𝑌))) = ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶))))
7067, 69eqtrd 2795 . . 3 ((𝜑 ∧ 𝜓) → (((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s (𝑋 ·s 𝐶)) −s (𝑋 ·s 𝑌)) = ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶))))
7141, 56addscld 28372 . . . 4 ((𝜑 ∧ 𝜓) → ((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) ∈ No)
7271, 58, 66addsubsd 28474 . . 3 ((𝜑 ∧ 𝜓) → ((((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) +s (𝐴 ·s 𝐶)) −s (𝑋 ·s 𝑌)) = ((((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) −s (𝑋 ·s 𝑌)) +s (𝐴 ·s 𝐶)))
7363, 70, 723eqtr3d 2803 . 2 ((𝜑 ∧ 𝜓) → ((((𝑋 ·s 𝐵) +s (𝑋 ·s 𝐶)) +s ((𝐴 ·s 𝑌) +s (𝐴 ·s 𝐶))) −s ((𝑋 ·s 𝑌) +s (𝑋 ·s 𝐶))) = ((((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) −s (𝑋 ·s 𝑌)) +s (𝐴 ·s 𝐶)))
7433, 73eqtrd 2795 1 ((𝜑 ∧ 𝜓) → (((𝑋 ·s (𝐵 +s 𝐶)) +s (𝐴 ·s (𝑌 +s 𝐶))) −s (𝑋 ·s (𝑌 +s 𝐶))) = ((((𝑋 ·s 𝐵) +s (𝐴 ·s 𝑌)) −s (𝑋 ·s 𝑌)) +s (𝐴 ·s 𝐶)))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1569   ∈ wcel 2144  ∀wral 3076   ∪ cun 4149  ‘cfv 6539  (class class class)co 7421  Nocsur 28003  Lcleft 28217  Rcright 28218   +s cadds 28351   −s csubs 28412   ·s cmuls 28498
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390  ax-un 7752
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rmo 3365  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-pss 4014  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-tp 4589  df-op 4835  df-ot 4858  df-uni 4867  df-int 4907  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-tr 5212  df-id 5545  df-eprel 5550  df-po 5558  df-so 5559  df-fr 5603  df-se 5604  df-we 5605  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-pred 6304  df-ord 6365  df-on 6366  df-suc 6368  df-iota 6494  df-fun 6541  df-fn 6542  df-f 6543  df-f1 6544  df-fo 6545  df-f1o 6546  df-fv 6547  df-riota 7378  df-ov 7424  df-oprab 7425  df-mpo 7426  df-1st 8002  df-2nd 8003  df-frecs 8303  df-wrecs 8334  df-recs 8383  df-1o 8480  df-2o 8481  df-nadd 8679  df-no 28006  df-lts 28007  df-bday 28008  df-les 28108  df-slts 28150  df-cuts 28152  df-0s 28199  df-made 28219  df-old 28220  df-left 28222  df-right 28223  df-norec 28330  df-norec2 28341  df-adds 28352  df-negs 28413  df-subs 28414  df-muls 28499
This theorem is used by:  addsdi  28547
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