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Theorem tgcgr4 25640
Description: Two quadrilaterals to be congruent to each other if one triangle formed by their vertices is, and the additional points are equidistant too. (Contributed by Thierry Arnoux, 8-Oct-2020.)
Hypotheses
Ref Expression
tgcgrxfr.p 𝑃 = (Base‘𝐺)
tgcgrxfr.m = (dist‘𝐺)
tgcgrxfr.i 𝐼 = (Itv‘𝐺)
tgcgrxfr.r = (cgrG‘𝐺)
tgcgrxfr.g (𝜑𝐺 ∈ TarskiG)
tgcgr4.a (𝜑𝐴𝑃)
tgcgr4.b (𝜑𝐵𝑃)
tgcgr4.c (𝜑𝐶𝑃)
tgcgr4.d (𝜑𝐷𝑃)
tgcgr4.w (𝜑𝑊𝑃)
tgcgr4.x (𝜑𝑋𝑃)
tgcgr4.y (𝜑𝑌𝑃)
tgcgr4.z (𝜑𝑍𝑃)
Assertion
Ref Expression
tgcgr4 (𝜑 → (⟨“𝐴𝐵𝐶𝐷”⟩ ⟨“𝑊𝑋𝑌𝑍”⟩ ↔ (⟨“𝐴𝐵𝐶”⟩ ⟨“𝑊𝑋𝑌”⟩ ∧ ((𝐴 𝐷) = (𝑊 𝑍) ∧ (𝐵 𝐷) = (𝑋 𝑍) ∧ (𝐶 𝐷) = (𝑌 𝑍)))))

Proof of Theorem tgcgr4
Dummy variables 𝑖 𝑗 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 tgcgrxfr.p . . 3 𝑃 = (Base‘𝐺)
2 tgcgrxfr.m . . 3 = (dist‘𝐺)
3 tgcgrxfr.r . . 3 = (cgrG‘𝐺)
4 tgcgrxfr.g . . 3 (𝜑𝐺 ∈ TarskiG)
5 fzo0ssnn0 12773 . . . . 5 (0..^4) ⊆ ℕ0
6 nn0ssre 11563 . . . . 5 0 ⊆ ℝ
75, 6sstri 3807 . . . 4 (0..^4) ⊆ ℝ
87a1i 11 . . 3 (𝜑 → (0..^4) ⊆ ℝ)
9 tgcgr4.a . . . . . 6 (𝜑𝐴𝑃)
10 tgcgr4.b . . . . . 6 (𝜑𝐵𝑃)
11 tgcgr4.c . . . . . 6 (𝜑𝐶𝑃)
12 tgcgr4.d . . . . . 6 (𝜑𝐷𝑃)
139, 10, 11, 12s4cld 13842 . . . . 5 (𝜑 → ⟨“𝐴𝐵𝐶𝐷”⟩ ∈ Word 𝑃)
14 wrdf 13521 . . . . 5 (⟨“𝐴𝐵𝐶𝐷”⟩ ∈ Word 𝑃 → ⟨“𝐴𝐵𝐶𝐷”⟩:(0..^(♯‘⟨“𝐴𝐵𝐶𝐷”⟩))⟶𝑃)
1513, 14syl 17 . . . 4 (𝜑 → ⟨“𝐴𝐵𝐶𝐷”⟩:(0..^(♯‘⟨“𝐴𝐵𝐶𝐷”⟩))⟶𝑃)
16 s4len 13868 . . . . . 6 (♯‘⟨“𝐴𝐵𝐶𝐷”⟩) = 4
1716oveq2i 6885 . . . . 5 (0..^(♯‘⟨“𝐴𝐵𝐶𝐷”⟩)) = (0..^4)
1817feq2i 6248 . . . 4 (⟨“𝐴𝐵𝐶𝐷”⟩:(0..^(♯‘⟨“𝐴𝐵𝐶𝐷”⟩))⟶𝑃 ↔ ⟨“𝐴𝐵𝐶𝐷”⟩:(0..^4)⟶𝑃)
1915, 18sylib 209 . . 3 (𝜑 → ⟨“𝐴𝐵𝐶𝐷”⟩:(0..^4)⟶𝑃)
20 tgcgr4.w . . . . . 6 (𝜑𝑊𝑃)
21 tgcgr4.x . . . . . 6 (𝜑𝑋𝑃)
22 tgcgr4.y . . . . . 6 (𝜑𝑌𝑃)
23 tgcgr4.z . . . . . 6 (𝜑𝑍𝑃)
2420, 21, 22, 23s4cld 13842 . . . . 5 (𝜑 → ⟨“𝑊𝑋𝑌𝑍”⟩ ∈ Word 𝑃)
25 wrdf 13521 . . . . 5 (⟨“𝑊𝑋𝑌𝑍”⟩ ∈ Word 𝑃 → ⟨“𝑊𝑋𝑌𝑍”⟩:(0..^(♯‘⟨“𝑊𝑋𝑌𝑍”⟩))⟶𝑃)
2624, 25syl 17 . . . 4 (𝜑 → ⟨“𝑊𝑋𝑌𝑍”⟩:(0..^(♯‘⟨“𝑊𝑋𝑌𝑍”⟩))⟶𝑃)
27 s4len 13868 . . . . . 6 (♯‘⟨“𝑊𝑋𝑌𝑍”⟩) = 4
2827oveq2i 6885 . . . . 5 (0..^(♯‘⟨“𝑊𝑋𝑌𝑍”⟩)) = (0..^4)
2928feq2i 6248 . . . 4 (⟨“𝑊𝑋𝑌𝑍”⟩:(0..^(♯‘⟨“𝑊𝑋𝑌𝑍”⟩))⟶𝑃 ↔ ⟨“𝑊𝑋𝑌𝑍”⟩:(0..^4)⟶𝑃)
3026, 29sylib 209 . . 3 (𝜑 → ⟨“𝑊𝑋𝑌𝑍”⟩:(0..^4)⟶𝑃)
311, 2, 3, 4, 8, 19, 30iscgrglt 25623 . 2 (𝜑 → (⟨“𝐴𝐵𝐶𝐷”⟩ ⟨“𝑊𝑋𝑌𝑍”⟩ ↔ ∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗)))))
3219fdmd 6265 . . . . . . 7 (𝜑 → dom ⟨“𝐴𝐵𝐶𝐷”⟩ = (0..^4))
33 3p1e4 11436 . . . . . . . . 9 (3 + 1) = 4
3433oveq2i 6885 . . . . . . . 8 (0..^(3 + 1)) = (0..^4)
35 3nn0 11577 . . . . . . . . . 10 3 ∈ ℕ0
36 nn0uz 11940 . . . . . . . . . 10 0 = (ℤ‘0)
3735, 36eleqtri 2883 . . . . . . . . 9 3 ∈ (ℤ‘0)
38 fzosplitsn 12800 . . . . . . . . 9 (3 ∈ (ℤ‘0) → (0..^(3 + 1)) = ((0..^3) ∪ {3}))
3937, 38ax-mp 5 . . . . . . . 8 (0..^(3 + 1)) = ((0..^3) ∪ {3})
4034, 39eqtr3i 2830 . . . . . . 7 (0..^4) = ((0..^3) ∪ {3})
4132, 40syl6eq 2856 . . . . . 6 (𝜑 → dom ⟨“𝐴𝐵𝐶𝐷”⟩ = ((0..^3) ∪ {3}))
4241raleqdv 3333 . . . . 5 (𝜑 → (∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ∀𝑗 ∈ ((0..^3) ∪ {3})(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗)))))
43 breq2 4848 . . . . . . . 8 (𝑗 = 3 → (𝑖 < 𝑗𝑖 < 3))
44 fveq2 6408 . . . . . . . . . 10 (𝑗 = 3 → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗) = (⟨“𝐴𝐵𝐶𝐷”⟩‘3))
4544oveq2d 6890 . . . . . . . . 9 (𝑗 = 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)))
46 fveq2 6408 . . . . . . . . . 10 (𝑗 = 3 → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗) = (⟨“𝑊𝑋𝑌𝑍”⟩‘3))
4746oveq2d 6890 . . . . . . . . 9 (𝑗 = 3 → ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))
4845, 47eqeq12d 2821 . . . . . . . 8 (𝑗 = 3 → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗)) ↔ ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))
4943, 48imbi12d 335 . . . . . . 7 (𝑗 = 3 → ((𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
5049ralunsn 4616 . . . . . 6 (3 ∈ ℕ0 → (∀𝑗 ∈ ((0..^3) ∪ {3})(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ (∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))))
5135, 50ax-mp 5 . . . . 5 (∀𝑗 ∈ ((0..^3) ∪ {3})(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ (∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
5242, 51syl6bb 278 . . . 4 (𝜑 → (∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ (∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))))
5352ralbidv 3174 . . 3 (𝜑 → (∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))))
5441raleqdv 3333 . . . 4 (𝜑 → (∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ ∀𝑖 ∈ ((0..^3) ∪ {3})(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))))
55 fzo0ssnn0 12773 . . . . . . . . . . . . . . . 16 (0..^3) ⊆ ℕ0
5655, 6sstri 3807 . . . . . . . . . . . . . . 15 (0..^3) ⊆ ℝ
57 simpr 473 . . . . . . . . . . . . . . 15 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → 𝑗 ∈ (0..^3))
5856, 57sseldi 3796 . . . . . . . . . . . . . 14 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → 𝑗 ∈ ℝ)
59 simpl 470 . . . . . . . . . . . . . . 15 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → 𝑖 = 3)
606, 35sselii 3795 . . . . . . . . . . . . . . 15 3 ∈ ℝ
6159, 60syl6eqel 2893 . . . . . . . . . . . . . 14 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → 𝑖 ∈ ℝ)
62 elfzolt2 12703 . . . . . . . . . . . . . . . 16 (𝑗 ∈ (0..^3) → 𝑗 < 3)
6362adantl 469 . . . . . . . . . . . . . . 15 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → 𝑗 < 3)
6463, 59breqtrrd 4872 . . . . . . . . . . . . . 14 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → 𝑗 < 𝑖)
65 ltnsym 10420 . . . . . . . . . . . . . . 15 ((𝑗 ∈ ℝ ∧ 𝑖 ∈ ℝ) → (𝑗 < 𝑖 → ¬ 𝑖 < 𝑗))
6665imp 395 . . . . . . . . . . . . . 14 (((𝑗 ∈ ℝ ∧ 𝑖 ∈ ℝ) ∧ 𝑗 < 𝑖) → ¬ 𝑖 < 𝑗)
6758, 61, 64, 66syl21anc 857 . . . . . . . . . . . . 13 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → ¬ 𝑖 < 𝑗)
6867pm2.21d 119 . . . . . . . . . . . 12 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → (𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))))
69 tbtru 1646 . . . . . . . . . . . 12 ((𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ((𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ⊤))
7068, 69sylib 209 . . . . . . . . . . 11 ((𝑖 = 3 ∧ 𝑗 ∈ (0..^3)) → ((𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ⊤))
7170ralbidva 3173 . . . . . . . . . 10 (𝑖 = 3 → (∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ∀𝑗 ∈ (0..^3)⊤))
72 3nn 11463 . . . . . . . . . . . . 13 3 ∈ ℕ
73 lbfzo0 12732 . . . . . . . . . . . . 13 (0 ∈ (0..^3) ↔ 3 ∈ ℕ)
7472, 73mpbir 222 . . . . . . . . . . . 12 0 ∈ (0..^3)
7574ne0ii 4125 . . . . . . . . . . 11 (0..^3) ≠ ∅
76 r19.3rzv 4259 . . . . . . . . . . 11 ((0..^3) ≠ ∅ → (⊤ ↔ ∀𝑗 ∈ (0..^3)⊤))
7775, 76ax-mp 5 . . . . . . . . . 10 (⊤ ↔ ∀𝑗 ∈ (0..^3)⊤)
7871, 77syl6bbr 280 . . . . . . . . 9 (𝑖 = 3 → (∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ⊤))
79 breq1 4847 . . . . . . . . . . . 12 (𝑖 = 3 → (𝑖 < 3 ↔ 3 < 3))
8060ltnri 10431 . . . . . . . . . . . . 13 ¬ 3 < 3
8180bifal 1654 . . . . . . . . . . . 12 (3 < 3 ↔ ⊥)
8279, 81syl6bb 278 . . . . . . . . . . 11 (𝑖 = 3 → (𝑖 < 3 ↔ ⊥))
8382imbi1d 332 . . . . . . . . . 10 (𝑖 = 3 → ((𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ (⊥ → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
84 falim 1655 . . . . . . . . . . 11 (⊥ → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))
8584bitru 1647 . . . . . . . . . 10 ((⊥ → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ ⊤)
8683, 85syl6bb 278 . . . . . . . . 9 (𝑖 = 3 → ((𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ ⊤))
8778, 86anbi12d 618 . . . . . . . 8 (𝑖 = 3 → ((∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ (⊤ ∧ ⊤)))
88 anidm 556 . . . . . . . 8 ((⊤ ∧ ⊤) ↔ ⊤)
8987, 88syl6bb 278 . . . . . . 7 (𝑖 = 3 → ((∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ ⊤))
9089ralunsn 4616 . . . . . 6 (3 ∈ ℕ0 → (∀𝑖 ∈ ((0..^3) ∪ {3})(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ (∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ∧ ⊤)))
9135, 90ax-mp 5 . . . . 5 (∀𝑖 ∈ ((0..^3) ∪ {3})(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ (∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ∧ ⊤))
92 ancom 450 . . . . 5 ((∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ∧ ⊤) ↔ (⊤ ∧ ∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))))
93 truan 1649 . . . . 5 ((⊤ ∧ ∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))) ↔ ∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
9491, 92, 933bitri 288 . . . 4 (∀𝑖 ∈ ((0..^3) ∪ {3})(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ ∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
9554, 94syl6bb 278 . . 3 (𝜑 → (∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ ∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))))
9653, 95bitrd 270 . 2 (𝜑 → (∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶𝐷”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))))))
97 r19.26 3252 . . 3 (∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ (∀𝑖 ∈ (0..^3)∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ ∀𝑖 ∈ (0..^3)(𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
989, 10, 11s3cld 13841 . . . . . . . . 9 (𝜑 → ⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃)
99 wrdf 13521 . . . . . . . . 9 (⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃 → ⟨“𝐴𝐵𝐶”⟩:(0..^(♯‘⟨“𝐴𝐵𝐶”⟩))⟶𝑃)
10098, 99syl 17 . . . . . . . 8 (𝜑 → ⟨“𝐴𝐵𝐶”⟩:(0..^(♯‘⟨“𝐴𝐵𝐶”⟩))⟶𝑃)
101 s3len 13863 . . . . . . . . . 10 (♯‘⟨“𝐴𝐵𝐶”⟩) = 3
102101oveq2i 6885 . . . . . . . . 9 (0..^(♯‘⟨“𝐴𝐵𝐶”⟩)) = (0..^3)
103102feq2i 6248 . . . . . . . 8 (⟨“𝐴𝐵𝐶”⟩:(0..^(♯‘⟨“𝐴𝐵𝐶”⟩))⟶𝑃 ↔ ⟨“𝐴𝐵𝐶”⟩:(0..^3)⟶𝑃)
104100, 103sylib 209 . . . . . . 7 (𝜑 → ⟨“𝐴𝐵𝐶”⟩:(0..^3)⟶𝑃)
105104fdmd 6265 . . . . . 6 (𝜑 → dom ⟨“𝐴𝐵𝐶”⟩ = (0..^3))
106 fdm 6264 . . . . . . 7 (⟨“𝐴𝐵𝐶”⟩:(0..^3)⟶𝑃 → dom ⟨“𝐴𝐵𝐶”⟩ = (0..^3))
107 raleq 3327 . . . . . . 7 (dom ⟨“𝐴𝐵𝐶”⟩ = (0..^3) → (∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗))) ↔ ∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗)))))
108104, 106, 1073syl 18 . . . . . 6 (𝜑 → (∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗))) ↔ ∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗)))))
109105, 108raleqbidv 3341 . . . . 5 (𝜑 → (∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶”⟩∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗))) ↔ ∀𝑖 ∈ (0..^3)∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗)))))
11056a1i 11 . . . . . 6 (𝜑 → (0..^3) ⊆ ℝ)
11120, 21, 22s3cld 13841 . . . . . . . 8 (𝜑 → ⟨“𝑊𝑋𝑌”⟩ ∈ Word 𝑃)
112 wrdf 13521 . . . . . . . 8 (⟨“𝑊𝑋𝑌”⟩ ∈ Word 𝑃 → ⟨“𝑊𝑋𝑌”⟩:(0..^(♯‘⟨“𝑊𝑋𝑌”⟩))⟶𝑃)
113111, 112syl 17 . . . . . . 7 (𝜑 → ⟨“𝑊𝑋𝑌”⟩:(0..^(♯‘⟨“𝑊𝑋𝑌”⟩))⟶𝑃)
114 s3len 13863 . . . . . . . . 9 (♯‘⟨“𝑊𝑋𝑌”⟩) = 3
115114oveq2i 6885 . . . . . . . 8 (0..^(♯‘⟨“𝑊𝑋𝑌”⟩)) = (0..^3)
116115feq2i 6248 . . . . . . 7 (⟨“𝑊𝑋𝑌”⟩:(0..^(♯‘⟨“𝑊𝑋𝑌”⟩))⟶𝑃 ↔ ⟨“𝑊𝑋𝑌”⟩:(0..^3)⟶𝑃)
117113, 116sylib 209 . . . . . 6 (𝜑 → ⟨“𝑊𝑋𝑌”⟩:(0..^3)⟶𝑃)
1181, 2, 3, 4, 110, 104, 117iscgrglt 25623 . . . . 5 (𝜑 → (⟨“𝐴𝐵𝐶”⟩ ⟨“𝑊𝑋𝑌”⟩ ↔ ∀𝑖 ∈ dom ⟨“𝐴𝐵𝐶”⟩∀𝑗 ∈ dom ⟨“𝐴𝐵𝐶”⟩(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗)))))
119 df-s4 13819 . . . . . . . . . . 11 ⟨“𝐴𝐵𝐶𝐷”⟩ = (⟨“𝐴𝐵𝐶”⟩ ++ ⟨“𝐷”⟩)
120119fveq1i 6409 . . . . . . . . . 10 (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = ((⟨“𝐴𝐵𝐶”⟩ ++ ⟨“𝐷”⟩)‘𝑖)
1219adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝐴𝑃)
12210adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝐵𝑃)
12311adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝐶𝑃)
124121, 122, 123s3cld 13841 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃)
12512adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝐷𝑃)
126125s1cld 13598 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ⟨“𝐷”⟩ ∈ Word 𝑃)
127 simprl 778 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑖 ∈ (0..^3))
128127, 102syl6eleqr 2896 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑖 ∈ (0..^(♯‘⟨“𝐴𝐵𝐶”⟩)))
129 ccatval1 13574 . . . . . . . . . . 11 ((⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃 ∧ ⟨“𝐷”⟩ ∈ Word 𝑃𝑖 ∈ (0..^(♯‘⟨“𝐴𝐵𝐶”⟩))) → ((⟨“𝐴𝐵𝐶”⟩ ++ ⟨“𝐷”⟩)‘𝑖) = (⟨“𝐴𝐵𝐶”⟩‘𝑖))
130124, 126, 128, 129syl3anc 1483 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ((⟨“𝐴𝐵𝐶”⟩ ++ ⟨“𝐷”⟩)‘𝑖) = (⟨“𝐴𝐵𝐶”⟩‘𝑖))
131120, 130syl5eq 2852 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = (⟨“𝐴𝐵𝐶”⟩‘𝑖))
132119fveq1i 6409 . . . . . . . . . 10 (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗) = ((⟨“𝐴𝐵𝐶”⟩ ++ ⟨“𝐷”⟩)‘𝑗)
133 simprr 780 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑗 ∈ (0..^3))
134133, 102syl6eleqr 2896 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑗 ∈ (0..^(♯‘⟨“𝐴𝐵𝐶”⟩)))
135 ccatval1 13574 . . . . . . . . . . 11 ((⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃 ∧ ⟨“𝐷”⟩ ∈ Word 𝑃𝑗 ∈ (0..^(♯‘⟨“𝐴𝐵𝐶”⟩))) → ((⟨“𝐴𝐵𝐶”⟩ ++ ⟨“𝐷”⟩)‘𝑗) = (⟨“𝐴𝐵𝐶”⟩‘𝑗))
136124, 126, 134, 135syl3anc 1483 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ((⟨“𝐴𝐵𝐶”⟩ ++ ⟨“𝐷”⟩)‘𝑗) = (⟨“𝐴𝐵𝐶”⟩‘𝑗))
137132, 136syl5eq 2852 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗) = (⟨“𝐴𝐵𝐶”⟩‘𝑗))
138131, 137oveq12d 6892 . . . . . . . 8 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)))
139 df-s4 13819 . . . . . . . . . . 11 ⟨“𝑊𝑋𝑌𝑍”⟩ = (⟨“𝑊𝑋𝑌”⟩ ++ ⟨“𝑍”⟩)
140139fveq1i 6409 . . . . . . . . . 10 (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = ((⟨“𝑊𝑋𝑌”⟩ ++ ⟨“𝑍”⟩)‘𝑖)
14120adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑊𝑃)
14221adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑋𝑃)
14322adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑌𝑃)
144141, 142, 143s3cld 13841 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ⟨“𝑊𝑋𝑌”⟩ ∈ Word 𝑃)
14523adantr 468 . . . . . . . . . . . 12 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑍𝑃)
146145s1cld 13598 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ⟨“𝑍”⟩ ∈ Word 𝑃)
147127, 115syl6eleqr 2896 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑖 ∈ (0..^(♯‘⟨“𝑊𝑋𝑌”⟩)))
148 ccatval1 13574 . . . . . . . . . . 11 ((⟨“𝑊𝑋𝑌”⟩ ∈ Word 𝑃 ∧ ⟨“𝑍”⟩ ∈ Word 𝑃𝑖 ∈ (0..^(♯‘⟨“𝑊𝑋𝑌”⟩))) → ((⟨“𝑊𝑋𝑌”⟩ ++ ⟨“𝑍”⟩)‘𝑖) = (⟨“𝑊𝑋𝑌”⟩‘𝑖))
149144, 146, 147, 148syl3anc 1483 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ((⟨“𝑊𝑋𝑌”⟩ ++ ⟨“𝑍”⟩)‘𝑖) = (⟨“𝑊𝑋𝑌”⟩‘𝑖))
150140, 149syl5eq 2852 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = (⟨“𝑊𝑋𝑌”⟩‘𝑖))
151139fveq1i 6409 . . . . . . . . . 10 (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗) = ((⟨“𝑊𝑋𝑌”⟩ ++ ⟨“𝑍”⟩)‘𝑗)
152133, 115syl6eleqr 2896 . . . . . . . . . . 11 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → 𝑗 ∈ (0..^(♯‘⟨“𝑊𝑋𝑌”⟩)))
153 ccatval1 13574 . . . . . . . . . . 11 ((⟨“𝑊𝑋𝑌”⟩ ∈ Word 𝑃 ∧ ⟨“𝑍”⟩ ∈ Word 𝑃𝑗 ∈ (0..^(♯‘⟨“𝑊𝑋𝑌”⟩))) → ((⟨“𝑊𝑋𝑌”⟩ ++ ⟨“𝑍”⟩)‘𝑗) = (⟨“𝑊𝑋𝑌”⟩‘𝑗))
154144, 146, 152, 153syl3anc 1483 . . . . . . . . . 10 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ((⟨“𝑊𝑋𝑌”⟩ ++ ⟨“𝑍”⟩)‘𝑗) = (⟨“𝑊𝑋𝑌”⟩‘𝑗))
155151, 154syl5eq 2852 . . . . . . . . 9 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗) = (⟨“𝑊𝑋𝑌”⟩‘𝑗))
156150, 155oveq12d 6892 . . . . . . . 8 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗)))
157138, 156eqeq12d 2821 . . . . . . 7 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗)) ↔ ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗))))
158157imbi2d 331 . . . . . 6 ((𝜑 ∧ (𝑖 ∈ (0..^3) ∧ 𝑗 ∈ (0..^3))) → ((𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ (𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗)))))
1591582ralbidva 3176 . . . . 5 (𝜑 → (∀𝑖 ∈ (0..^3)∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ∀𝑖 ∈ (0..^3)∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶”⟩‘𝑖) (⟨“𝐴𝐵𝐶”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌”⟩‘𝑖) (⟨“𝑊𝑋𝑌”⟩‘𝑗)))))
160109, 118, 1593bitr4rd 303 . . . 4 (𝜑 → (∀𝑖 ∈ (0..^3)∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ↔ ⟨“𝐴𝐵𝐶”⟩ ⟨“𝑊𝑋𝑌”⟩))
161 fzo0to3tp 12778 . . . . . 6 (0..^3) = {0, 1, 2}
162 raleq 3327 . . . . . 6 ((0..^3) = {0, 1, 2} → (∀𝑖 ∈ (0..^3)(𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ ∀𝑖 ∈ {0, 1, 2} (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
163161, 162mp1i 13 . . . . 5 (𝜑 → (∀𝑖 ∈ (0..^3)(𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ ∀𝑖 ∈ {0, 1, 2} (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
164 3pos 11397 . . . . . . . . . 10 0 < 3
165 breq1 4847 . . . . . . . . . 10 (𝑖 = 0 → (𝑖 < 3 ↔ 0 < 3))
166164, 165mpbiri 249 . . . . . . . . 9 (𝑖 = 0 → 𝑖 < 3)
167166adantl 469 . . . . . . . 8 ((𝜑𝑖 = 0) → 𝑖 < 3)
168 biimt 351 . . . . . . . 8 (𝑖 < 3 → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) ↔ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
169167, 168syl 17 . . . . . . 7 ((𝜑𝑖 = 0) → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) ↔ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
170 simpr 473 . . . . . . . . . . 11 ((𝜑𝑖 = 0) → 𝑖 = 0)
171170fveq2d 6412 . . . . . . . . . 10 ((𝜑𝑖 = 0) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = (⟨“𝐴𝐵𝐶𝐷”⟩‘0))
172 s4fv0 13864 . . . . . . . . . . . 12 (𝐴𝑃 → (⟨“𝐴𝐵𝐶𝐷”⟩‘0) = 𝐴)
1739, 172syl 17 . . . . . . . . . . 11 (𝜑 → (⟨“𝐴𝐵𝐶𝐷”⟩‘0) = 𝐴)
174173adantr 468 . . . . . . . . . 10 ((𝜑𝑖 = 0) → (⟨“𝐴𝐵𝐶𝐷”⟩‘0) = 𝐴)
175171, 174eqtrd 2840 . . . . . . . . 9 ((𝜑𝑖 = 0) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = 𝐴)
176 s4fv3 13867 . . . . . . . . . . 11 (𝐷𝑃 → (⟨“𝐴𝐵𝐶𝐷”⟩‘3) = 𝐷)
17712, 176syl 17 . . . . . . . . . 10 (𝜑 → (⟨“𝐴𝐵𝐶𝐷”⟩‘3) = 𝐷)
178177adantr 468 . . . . . . . . 9 ((𝜑𝑖 = 0) → (⟨“𝐴𝐵𝐶𝐷”⟩‘3) = 𝐷)
179175, 178oveq12d 6892 . . . . . . . 8 ((𝜑𝑖 = 0) → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = (𝐴 𝐷))
180170fveq2d 6412 . . . . . . . . . 10 ((𝜑𝑖 = 0) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = (⟨“𝑊𝑋𝑌𝑍”⟩‘0))
181 s4fv0 13864 . . . . . . . . . . . 12 (𝑊𝑃 → (⟨“𝑊𝑋𝑌𝑍”⟩‘0) = 𝑊)
18220, 181syl 17 . . . . . . . . . . 11 (𝜑 → (⟨“𝑊𝑋𝑌𝑍”⟩‘0) = 𝑊)
183182adantr 468 . . . . . . . . . 10 ((𝜑𝑖 = 0) → (⟨“𝑊𝑋𝑌𝑍”⟩‘0) = 𝑊)
184180, 183eqtrd 2840 . . . . . . . . 9 ((𝜑𝑖 = 0) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = 𝑊)
185 s4fv3 13867 . . . . . . . . . . 11 (𝑍𝑃 → (⟨“𝑊𝑋𝑌𝑍”⟩‘3) = 𝑍)
18623, 185syl 17 . . . . . . . . . 10 (𝜑 → (⟨“𝑊𝑋𝑌𝑍”⟩‘3) = 𝑍)
187186adantr 468 . . . . . . . . 9 ((𝜑𝑖 = 0) → (⟨“𝑊𝑋𝑌𝑍”⟩‘3) = 𝑍)
188184, 187oveq12d 6892 . . . . . . . 8 ((𝜑𝑖 = 0) → ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) = (𝑊 𝑍))
189179, 188eqeq12d 2821 . . . . . . 7 ((𝜑𝑖 = 0) → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) ↔ (𝐴 𝐷) = (𝑊 𝑍)))
190169, 189bitr3d 272 . . . . . 6 ((𝜑𝑖 = 0) → ((𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ (𝐴 𝐷) = (𝑊 𝑍)))
191 1lt3 11472 . . . . . . . . . 10 1 < 3
192 breq1 4847 . . . . . . . . . 10 (𝑖 = 1 → (𝑖 < 3 ↔ 1 < 3))
193191, 192mpbiri 249 . . . . . . . . 9 (𝑖 = 1 → 𝑖 < 3)
194193adantl 469 . . . . . . . 8 ((𝜑𝑖 = 1) → 𝑖 < 3)
195194, 168syl 17 . . . . . . 7 ((𝜑𝑖 = 1) → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) ↔ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
196 simpr 473 . . . . . . . . . . 11 ((𝜑𝑖 = 1) → 𝑖 = 1)
197196fveq2d 6412 . . . . . . . . . 10 ((𝜑𝑖 = 1) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = (⟨“𝐴𝐵𝐶𝐷”⟩‘1))
198 s4fv1 13865 . . . . . . . . . . . 12 (𝐵𝑃 → (⟨“𝐴𝐵𝐶𝐷”⟩‘1) = 𝐵)
19910, 198syl 17 . . . . . . . . . . 11 (𝜑 → (⟨“𝐴𝐵𝐶𝐷”⟩‘1) = 𝐵)
200199adantr 468 . . . . . . . . . 10 ((𝜑𝑖 = 1) → (⟨“𝐴𝐵𝐶𝐷”⟩‘1) = 𝐵)
201197, 200eqtrd 2840 . . . . . . . . 9 ((𝜑𝑖 = 1) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = 𝐵)
202177adantr 468 . . . . . . . . 9 ((𝜑𝑖 = 1) → (⟨“𝐴𝐵𝐶𝐷”⟩‘3) = 𝐷)
203201, 202oveq12d 6892 . . . . . . . 8 ((𝜑𝑖 = 1) → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = (𝐵 𝐷))
204196fveq2d 6412 . . . . . . . . . 10 ((𝜑𝑖 = 1) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = (⟨“𝑊𝑋𝑌𝑍”⟩‘1))
205 s4fv1 13865 . . . . . . . . . . . 12 (𝑋𝑃 → (⟨“𝑊𝑋𝑌𝑍”⟩‘1) = 𝑋)
20621, 205syl 17 . . . . . . . . . . 11 (𝜑 → (⟨“𝑊𝑋𝑌𝑍”⟩‘1) = 𝑋)
207206adantr 468 . . . . . . . . . 10 ((𝜑𝑖 = 1) → (⟨“𝑊𝑋𝑌𝑍”⟩‘1) = 𝑋)
208204, 207eqtrd 2840 . . . . . . . . 9 ((𝜑𝑖 = 1) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = 𝑋)
209186adantr 468 . . . . . . . . 9 ((𝜑𝑖 = 1) → (⟨“𝑊𝑋𝑌𝑍”⟩‘3) = 𝑍)
210208, 209oveq12d 6892 . . . . . . . 8 ((𝜑𝑖 = 1) → ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) = (𝑋 𝑍))
211203, 210eqeq12d 2821 . . . . . . 7 ((𝜑𝑖 = 1) → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) ↔ (𝐵 𝐷) = (𝑋 𝑍)))
212195, 211bitr3d 272 . . . . . 6 ((𝜑𝑖 = 1) → ((𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ (𝐵 𝐷) = (𝑋 𝑍)))
213 2lt3 11471 . . . . . . . . . 10 2 < 3
214 breq1 4847 . . . . . . . . . 10 (𝑖 = 2 → (𝑖 < 3 ↔ 2 < 3))
215213, 214mpbiri 249 . . . . . . . . 9 (𝑖 = 2 → 𝑖 < 3)
216215adantl 469 . . . . . . . 8 ((𝜑𝑖 = 2) → 𝑖 < 3)
217216, 168syl 17 . . . . . . 7 ((𝜑𝑖 = 2) → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) ↔ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))))
218 simpr 473 . . . . . . . . . . 11 ((𝜑𝑖 = 2) → 𝑖 = 2)
219218fveq2d 6412 . . . . . . . . . 10 ((𝜑𝑖 = 2) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = (⟨“𝐴𝐵𝐶𝐷”⟩‘2))
220 s4fv2 13866 . . . . . . . . . . . 12 (𝐶𝑃 → (⟨“𝐴𝐵𝐶𝐷”⟩‘2) = 𝐶)
22111, 220syl 17 . . . . . . . . . . 11 (𝜑 → (⟨“𝐴𝐵𝐶𝐷”⟩‘2) = 𝐶)
222221adantr 468 . . . . . . . . . 10 ((𝜑𝑖 = 2) → (⟨“𝐴𝐵𝐶𝐷”⟩‘2) = 𝐶)
223219, 222eqtrd 2840 . . . . . . . . 9 ((𝜑𝑖 = 2) → (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) = 𝐶)
224177adantr 468 . . . . . . . . 9 ((𝜑𝑖 = 2) → (⟨“𝐴𝐵𝐶𝐷”⟩‘3) = 𝐷)
225223, 224oveq12d 6892 . . . . . . . 8 ((𝜑𝑖 = 2) → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = (𝐶 𝐷))
226218fveq2d 6412 . . . . . . . . . 10 ((𝜑𝑖 = 2) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = (⟨“𝑊𝑋𝑌𝑍”⟩‘2))
227 s4fv2 13866 . . . . . . . . . . . 12 (𝑌𝑃 → (⟨“𝑊𝑋𝑌𝑍”⟩‘2) = 𝑌)
22822, 227syl 17 . . . . . . . . . . 11 (𝜑 → (⟨“𝑊𝑋𝑌𝑍”⟩‘2) = 𝑌)
229228adantr 468 . . . . . . . . . 10 ((𝜑𝑖 = 2) → (⟨“𝑊𝑋𝑌𝑍”⟩‘2) = 𝑌)
230226, 229eqtrd 2840 . . . . . . . . 9 ((𝜑𝑖 = 2) → (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) = 𝑌)
231186adantr 468 . . . . . . . . 9 ((𝜑𝑖 = 2) → (⟨“𝑊𝑋𝑌𝑍”⟩‘3) = 𝑍)
232230, 231oveq12d 6892 . . . . . . . 8 ((𝜑𝑖 = 2) → ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) = (𝑌 𝑍))
233225, 232eqeq12d 2821 . . . . . . 7 ((𝜑𝑖 = 2) → (((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)) ↔ (𝐶 𝐷) = (𝑌 𝑍)))
234217, 233bitr3d 272 . . . . . 6 ((𝜑𝑖 = 2) → ((𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ (𝐶 𝐷) = (𝑌 𝑍)))
235 0red 10328 . . . . . 6 (𝜑 → 0 ∈ ℝ)
236 1red 10326 . . . . . 6 (𝜑 → 1 ∈ ℝ)
237 2re 11374 . . . . . . 7 2 ∈ ℝ
238237a1i 11 . . . . . 6 (𝜑 → 2 ∈ ℝ)
239190, 212, 234, 235, 236, 238raltpd 4504 . . . . 5 (𝜑 → (∀𝑖 ∈ {0, 1, 2} (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ ((𝐴 𝐷) = (𝑊 𝑍) ∧ (𝐵 𝐷) = (𝑋 𝑍) ∧ (𝐶 𝐷) = (𝑌 𝑍))))
240163, 239bitrd 270 . . . 4 (𝜑 → (∀𝑖 ∈ (0..^3)(𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3))) ↔ ((𝐴 𝐷) = (𝑊 𝑍) ∧ (𝐵 𝐷) = (𝑋 𝑍) ∧ (𝐶 𝐷) = (𝑌 𝑍))))
241160, 240anbi12d 618 . . 3 (𝜑 → ((∀𝑖 ∈ (0..^3)∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ ∀𝑖 ∈ (0..^3)(𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ (⟨“𝐴𝐵𝐶”⟩ ⟨“𝑊𝑋𝑌”⟩ ∧ ((𝐴 𝐷) = (𝑊 𝑍) ∧ (𝐵 𝐷) = (𝑋 𝑍) ∧ (𝐶 𝐷) = (𝑌 𝑍)))))
24297, 241syl5bb 274 . 2 (𝜑 → (∀𝑖 ∈ (0..^3)(∀𝑗 ∈ (0..^3)(𝑖 < 𝑗 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘𝑗)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘𝑗))) ∧ (𝑖 < 3 → ((⟨“𝐴𝐵𝐶𝐷”⟩‘𝑖) (⟨“𝐴𝐵𝐶𝐷”⟩‘3)) = ((⟨“𝑊𝑋𝑌𝑍”⟩‘𝑖) (⟨“𝑊𝑋𝑌𝑍”⟩‘3)))) ↔ (⟨“𝐴𝐵𝐶”⟩ ⟨“𝑊𝑋𝑌”⟩ ∧ ((𝐴 𝐷) = (𝑊 𝑍) ∧ (𝐵 𝐷) = (𝑋 𝑍) ∧ (𝐶 𝐷) = (𝑌 𝑍)))))
24331, 96, 2423bitrd 296 1 (𝜑 → (⟨“𝐴𝐵𝐶𝐷”⟩ ⟨“𝑊𝑋𝑌𝑍”⟩ ↔ (⟨“𝐴𝐵𝐶”⟩ ⟨“𝑊𝑋𝑌”⟩ ∧ ((𝐴 𝐷) = (𝑊 𝑍) ∧ (𝐵 𝐷) = (𝑋 𝑍) ∧ (𝐶 𝐷) = (𝑌 𝑍)))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 197  wa 384  w3a 1100   = wceq 1637  wtru 1638  wfal 1650  wcel 2156  wne 2978  wral 3096  cun 3767  wss 3769  c0 4116  {csn 4370  {ctp 4374   class class class wbr 4844  dom cdm 5311  wf 6097  cfv 6101  (class class class)co 6874  cr 10220  0cc0 10221  1c1 10222   + caddc 10224   < clt 10359  cn 11305  2c2 11356  3c3 11357  4c4 11358  0cn0 11559  cuz 11904  ..^cfzo 12689  chash 13337  Word cword 13502   ++ cconcat 13504  ⟨“cs1 13505  ⟨“cs3 13811  ⟨“cs4 13812  Basecbs 16068  distcds 16162  TarskiGcstrkg 25543  Itvcitv 25549  cgrGccgrg 25619
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1877  ax-4 1894  ax-5 2001  ax-6 2068  ax-7 2104  ax-8 2158  ax-9 2165  ax-10 2185  ax-11 2201  ax-12 2214  ax-13 2420  ax-ext 2784  ax-rep 4964  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5096  ax-un 7179  ax-cnex 10277  ax-resscn 10278  ax-1cn 10279  ax-icn 10280  ax-addcl 10281  ax-addrcl 10282  ax-mulcl 10283  ax-mulrcl 10284  ax-mulcom 10285  ax-addass 10286  ax-mulass 10287  ax-distr 10288  ax-i2m1 10289  ax-1ne0 10290  ax-1rid 10291  ax-rnegex 10292  ax-rrecex 10293  ax-cnre 10294  ax-pre-lttri 10295  ax-pre-lttrn 10296  ax-pre-ltadd 10297  ax-pre-mulgt0 10298
This theorem depends on definitions:  df-bi 198  df-an 385  df-or 866  df-3or 1101  df-3an 1102  df-tru 1641  df-fal 1651  df-ex 1860  df-nf 1864  df-sb 2061  df-eu 2634  df-mo 2635  df-clab 2793  df-cleq 2799  df-clel 2802  df-nfc 2937  df-ne 2979  df-nel 3082  df-ral 3101  df-rex 3102  df-reu 3103  df-rab 3105  df-v 3393  df-sbc 3634  df-csb 3729  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-pss 3785  df-nul 4117  df-if 4280  df-pw 4353  df-sn 4371  df-pr 4373  df-tp 4375  df-op 4377  df-uni 4631  df-int 4670  df-iun 4714  df-br 4845  df-opab 4907  df-mpt 4924  df-tr 4947  df-id 5219  df-eprel 5224  df-po 5232  df-so 5233  df-fr 5270  df-we 5272  df-xp 5317  df-rel 5318  df-cnv 5319  df-co 5320  df-dm 5321  df-rn 5322  df-res 5323  df-ima 5324  df-pred 5893  df-ord 5939  df-on 5940  df-lim 5941  df-suc 5942  df-iota 6064  df-fun 6103  df-fn 6104  df-f 6105  df-f1 6106  df-fo 6107  df-f1o 6108  df-fv 6109  df-riota 6835  df-ov 6877  df-oprab 6878  df-mpt2 6879  df-om 7296  df-1st 7398  df-2nd 7399  df-wrecs 7642  df-recs 7704  df-rdg 7742  df-1o 7796  df-oadd 7800  df-er 7979  df-pm 8095  df-en 8193  df-dom 8194  df-sdom 8195  df-fin 8196  df-card 9048  df-pnf 10361  df-mnf 10362  df-xr 10363  df-ltxr 10364  df-le 10365  df-sub 10553  df-neg 10554  df-nn 11306  df-2 11364  df-3 11365  df-4 11366  df-n0 11560  df-z 11644  df-uz 11905  df-fz 12550  df-fzo 12690  df-hash 13338  df-word 13510  df-concat 13512  df-s1 13513  df-s2 13817  df-s3 13818  df-s4 13819  df-trkgc 25561  df-trkgcb 25563  df-trkg 25566  df-cgrg 25620
This theorem is referenced by:  cgrg3col4  25948
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