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Theorem colline 26434
Description: Three points are colinear iff there is a line through all three of them. Theorem 6.23 of [Schwabhauser] p. 46. (Contributed by Thierry Arnoux, 28-May-2019.)
Hypotheses
Ref Expression
tglineintmo.p 𝑃 = (Base‘𝐺)
tglineintmo.i 𝐼 = (Itv‘𝐺)
tglineintmo.l 𝐿 = (LineG‘𝐺)
tglineintmo.g (𝜑𝐺 ∈ TarskiG)
colline.1 (𝜑𝑋𝑃)
colline.2 (𝜑𝑌𝑃)
colline.3 (𝜑𝑍𝑃)
colline.4 (𝜑 → 2 ≤ (♯‘𝑃))
Assertion
Ref Expression
colline (𝜑 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) ↔ ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎)))
Distinct variable groups:   𝐿,𝑎   𝑋,𝑎   𝑌,𝑎   𝑍,𝑎   𝜑,𝑎
Allowed substitution hints:   𝑃(𝑎)   𝐺(𝑎)   𝐼(𝑎)

Proof of Theorem colline
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 tglineintmo.p . . . . . . . 8 𝑃 = (Base‘𝐺)
2 tglineintmo.i . . . . . . . 8 𝐼 = (Itv‘𝐺)
3 tglineintmo.l . . . . . . . 8 𝐿 = (LineG‘𝐺)
4 tglineintmo.g . . . . . . . . 9 (𝜑𝐺 ∈ TarskiG)
54ad4antr 730 . . . . . . . 8 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝐺 ∈ TarskiG)
6 colline.1 . . . . . . . . 9 (𝜑𝑋𝑃)
76ad4antr 730 . . . . . . . 8 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑋𝑃)
8 simplr 767 . . . . . . . 8 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑥𝑃)
9 simpr 487 . . . . . . . 8 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑋𝑥)
101, 2, 3, 5, 7, 8, 9tgelrnln 26415 . . . . . . 7 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → (𝑋𝐿𝑥) ∈ ran 𝐿)
111, 2, 3, 5, 7, 8, 9tglinerflx1 26418 . . . . . . 7 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑋 ∈ (𝑋𝐿𝑥))
12 simp-4r 782 . . . . . . . 8 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑌 = 𝑍)
13 simpllr 774 . . . . . . . . 9 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑋 = 𝑍)
1413, 11eqeltrrd 2914 . . . . . . . 8 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑍 ∈ (𝑋𝐿𝑥))
1512, 14eqeltrd 2913 . . . . . . 7 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → 𝑌 ∈ (𝑋𝐿𝑥))
16 eleq2 2901 . . . . . . . . 9 (𝑎 = (𝑋𝐿𝑥) → (𝑋𝑎𝑋 ∈ (𝑋𝐿𝑥)))
17 eleq2 2901 . . . . . . . . 9 (𝑎 = (𝑋𝐿𝑥) → (𝑌𝑎𝑌 ∈ (𝑋𝐿𝑥)))
18 eleq2 2901 . . . . . . . . 9 (𝑎 = (𝑋𝐿𝑥) → (𝑍𝑎𝑍 ∈ (𝑋𝐿𝑥)))
1916, 17, 183anbi123d 1432 . . . . . . . 8 (𝑎 = (𝑋𝐿𝑥) → ((𝑋𝑎𝑌𝑎𝑍𝑎) ↔ (𝑋 ∈ (𝑋𝐿𝑥) ∧ 𝑌 ∈ (𝑋𝐿𝑥) ∧ 𝑍 ∈ (𝑋𝐿𝑥))))
2019rspcev 3622 . . . . . . 7 (((𝑋𝐿𝑥) ∈ ran 𝐿 ∧ (𝑋 ∈ (𝑋𝐿𝑥) ∧ 𝑌 ∈ (𝑋𝐿𝑥) ∧ 𝑍 ∈ (𝑋𝐿𝑥))) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
2110, 11, 15, 14, 20syl13anc 1368 . . . . . 6 (((((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥𝑃) ∧ 𝑋𝑥) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
22 eqid 2821 . . . . . . . 8 (dist‘𝐺) = (dist‘𝐺)
23 colline.4 . . . . . . . 8 (𝜑 → 2 ≤ (♯‘𝑃))
241, 22, 2, 4, 23, 6tglowdim1i 26286 . . . . . . 7 (𝜑 → ∃𝑥𝑃 𝑋𝑥)
2524ad2antrr 724 . . . . . 6 (((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) → ∃𝑥𝑃 𝑋𝑥)
2621, 25r19.29a 3289 . . . . 5 (((𝜑𝑌 = 𝑍) ∧ 𝑋 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
274ad2antrr 724 . . . . . . 7 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝐺 ∈ TarskiG)
286ad2antrr 724 . . . . . . 7 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝑋𝑃)
29 colline.3 . . . . . . . 8 (𝜑𝑍𝑃)
3029ad2antrr 724 . . . . . . 7 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝑍𝑃)
31 simpr 487 . . . . . . 7 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝑋𝑍)
321, 2, 3, 27, 28, 30, 31tgelrnln 26415 . . . . . 6 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → (𝑋𝐿𝑍) ∈ ran 𝐿)
331, 2, 3, 27, 28, 30, 31tglinerflx1 26418 . . . . . 6 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝑋 ∈ (𝑋𝐿𝑍))
34 simplr 767 . . . . . . 7 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝑌 = 𝑍)
351, 2, 3, 27, 28, 30, 31tglinerflx2 26419 . . . . . . 7 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝑍 ∈ (𝑋𝐿𝑍))
3634, 35eqeltrd 2913 . . . . . 6 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → 𝑌 ∈ (𝑋𝐿𝑍))
37 eleq2 2901 . . . . . . . 8 (𝑎 = (𝑋𝐿𝑍) → (𝑋𝑎𝑋 ∈ (𝑋𝐿𝑍)))
38 eleq2 2901 . . . . . . . 8 (𝑎 = (𝑋𝐿𝑍) → (𝑌𝑎𝑌 ∈ (𝑋𝐿𝑍)))
39 eleq2 2901 . . . . . . . 8 (𝑎 = (𝑋𝐿𝑍) → (𝑍𝑎𝑍 ∈ (𝑋𝐿𝑍)))
4037, 38, 393anbi123d 1432 . . . . . . 7 (𝑎 = (𝑋𝐿𝑍) → ((𝑋𝑎𝑌𝑎𝑍𝑎) ↔ (𝑋 ∈ (𝑋𝐿𝑍) ∧ 𝑌 ∈ (𝑋𝐿𝑍) ∧ 𝑍 ∈ (𝑋𝐿𝑍))))
4140rspcev 3622 . . . . . 6 (((𝑋𝐿𝑍) ∈ ran 𝐿 ∧ (𝑋 ∈ (𝑋𝐿𝑍) ∧ 𝑌 ∈ (𝑋𝐿𝑍) ∧ 𝑍 ∈ (𝑋𝐿𝑍))) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
4232, 33, 36, 35, 41syl13anc 1368 . . . . 5 (((𝜑𝑌 = 𝑍) ∧ 𝑋𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
4326, 42pm2.61dane 3104 . . . 4 ((𝜑𝑌 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
4443adantlr 713 . . 3 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
45 simpll 765 . . . . 5 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → 𝜑)
46 simpr 487 . . . . . . 7 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → 𝑌𝑍)
4746neneqd 3021 . . . . . 6 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → ¬ 𝑌 = 𝑍)
48 simplr 767 . . . . . 6 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
49 orel2 887 . . . . . 6 𝑌 = 𝑍 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) → 𝑋 ∈ (𝑌𝐿𝑍)))
5047, 48, 49sylc 65 . . . . 5 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → 𝑋 ∈ (𝑌𝐿𝑍))
514ad2antrr 724 . . . . . 6 (((𝜑𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌𝑍) → 𝐺 ∈ TarskiG)
52 colline.2 . . . . . . 7 (𝜑𝑌𝑃)
5352ad2antrr 724 . . . . . 6 (((𝜑𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌𝑍) → 𝑌𝑃)
5429ad2antrr 724 . . . . . 6 (((𝜑𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌𝑍) → 𝑍𝑃)
55 simpr 487 . . . . . 6 (((𝜑𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌𝑍) → 𝑌𝑍)
561, 2, 3, 51, 53, 54, 55tgelrnln 26415 . . . . 5 (((𝜑𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌𝑍) → (𝑌𝐿𝑍) ∈ ran 𝐿)
5745, 50, 46, 56syl21anc 835 . . . 4 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → (𝑌𝐿𝑍) ∈ ran 𝐿)
581, 2, 3, 51, 53, 54, 55tglinerflx1 26418 . . . . 5 (((𝜑𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌𝑍) → 𝑌 ∈ (𝑌𝐿𝑍))
5945, 50, 46, 58syl21anc 835 . . . 4 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → 𝑌 ∈ (𝑌𝐿𝑍))
601, 2, 3, 51, 53, 54, 55tglinerflx2 26419 . . . . 5 (((𝜑𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌𝑍) → 𝑍 ∈ (𝑌𝐿𝑍))
6145, 50, 46, 60syl21anc 835 . . . 4 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → 𝑍 ∈ (𝑌𝐿𝑍))
62 eleq2 2901 . . . . . 6 (𝑎 = (𝑌𝐿𝑍) → (𝑋𝑎𝑋 ∈ (𝑌𝐿𝑍)))
63 eleq2 2901 . . . . . 6 (𝑎 = (𝑌𝐿𝑍) → (𝑌𝑎𝑌 ∈ (𝑌𝐿𝑍)))
64 eleq2 2901 . . . . . 6 (𝑎 = (𝑌𝐿𝑍) → (𝑍𝑎𝑍 ∈ (𝑌𝐿𝑍)))
6562, 63, 643anbi123d 1432 . . . . 5 (𝑎 = (𝑌𝐿𝑍) → ((𝑋𝑎𝑌𝑎𝑍𝑎) ↔ (𝑋 ∈ (𝑌𝐿𝑍) ∧ 𝑌 ∈ (𝑌𝐿𝑍) ∧ 𝑍 ∈ (𝑌𝐿𝑍))))
6665rspcev 3622 . . . 4 (((𝑌𝐿𝑍) ∈ ran 𝐿 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∧ 𝑌 ∈ (𝑌𝐿𝑍) ∧ 𝑍 ∈ (𝑌𝐿𝑍))) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
6757, 50, 59, 61, 66syl13anc 1368 . . 3 (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
6844, 67pm2.61dane 3104 . 2 ((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) → ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎))
69 df-ne 3017 . . . . . 6 (𝑌𝑍 ↔ ¬ 𝑌 = 𝑍)
70 simplr1 1211 . . . . . . . 8 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑋𝑎)
714ad3antrrr 728 . . . . . . . . 9 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝐺 ∈ TarskiG)
7252ad3antrrr 728 . . . . . . . . 9 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑌𝑃)
7329ad3antrrr 728 . . . . . . . . 9 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑍𝑃)
74 simpr 487 . . . . . . . . 9 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑌𝑍)
75 simpllr 774 . . . . . . . . 9 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑎 ∈ ran 𝐿)
76 simplr2 1212 . . . . . . . . 9 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑌𝑎)
77 simplr3 1213 . . . . . . . . 9 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑍𝑎)
781, 2, 3, 71, 72, 73, 74, 74, 75, 76, 77tglinethru 26421 . . . . . . . 8 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑎 = (𝑌𝐿𝑍))
7970, 78eleqtrd 2915 . . . . . . 7 ((((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) ∧ 𝑌𝑍) → 𝑋 ∈ (𝑌𝐿𝑍))
8079ex 415 . . . . . 6 (((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) → (𝑌𝑍𝑋 ∈ (𝑌𝐿𝑍)))
8169, 80syl5bir 245 . . . . 5 (((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) → (¬ 𝑌 = 𝑍𝑋 ∈ (𝑌𝐿𝑍)))
8281orrd 859 . . . 4 (((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) → (𝑌 = 𝑍𝑋 ∈ (𝑌𝐿𝑍)))
8382orcomd 867 . . 3 (((𝜑𝑎 ∈ ran 𝐿) ∧ (𝑋𝑎𝑌𝑎𝑍𝑎)) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
8483r19.29an 3288 . 2 ((𝜑 ∧ ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎)) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
8568, 84impbida 799 1 (𝜑 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) ↔ ∃𝑎 ∈ ran 𝐿(𝑋𝑎𝑌𝑎𝑍𝑎)))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 208  wa 398  wo 843  w3a 1083   = wceq 1533  wcel 2110  wne 3016  wrex 3139   class class class wbr 5065  ran crn 5555  cfv 6354  (class class class)co 7155  cle 10675  2c2 11691  chash 13689  Basecbs 16482  distcds 16573  TarskiGcstrkg 26215  Itvcitv 26221  LineGclng 26222
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-rep 5189  ax-sep 5202  ax-nul 5209  ax-pow 5265  ax-pr 5329  ax-un 7460  ax-cnex 10592  ax-resscn 10593  ax-1cn 10594  ax-icn 10595  ax-addcl 10596  ax-addrcl 10597  ax-mulcl 10598  ax-mulrcl 10599  ax-mulcom 10600  ax-addass 10601  ax-mulass 10602  ax-distr 10603  ax-i2m1 10604  ax-1ne0 10605  ax-1rid 10606  ax-rnegex 10607  ax-rrecex 10608  ax-cnre 10609  ax-pre-lttri 10610  ax-pre-lttrn 10611  ax-pre-ltadd 10612  ax-pre-mulgt0 10613
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3496  df-sbc 3772  df-csb 3883  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-pss 3953  df-nul 4291  df-if 4467  df-pw 4540  df-sn 4567  df-pr 4569  df-tp 4571  df-op 4573  df-uni 4838  df-int 4876  df-iun 4920  df-br 5066  df-opab 5128  df-mpt 5146  df-tr 5172  df-id 5459  df-eprel 5464  df-po 5473  df-so 5474  df-fr 5513  df-we 5515  df-xp 5560  df-rel 5561  df-cnv 5562  df-co 5563  df-dm 5564  df-rn 5565  df-res 5566  df-ima 5567  df-pred 6147  df-ord 6193  df-on 6194  df-lim 6195  df-suc 6196  df-iota 6313  df-fun 6356  df-fn 6357  df-f 6358  df-f1 6359  df-fo 6360  df-f1o 6361  df-fv 6362  df-riota 7113  df-ov 7158  df-oprab 7159  df-mpo 7160  df-om 7580  df-1st 7688  df-2nd 7689  df-wrecs 7946  df-recs 8007  df-rdg 8045  df-1o 8101  df-oadd 8105  df-er 8288  df-pm 8408  df-en 8509  df-dom 8510  df-sdom 8511  df-fin 8512  df-dju 9329  df-card 9367  df-pnf 10676  df-mnf 10677  df-xr 10678  df-ltxr 10679  df-le 10680  df-sub 10871  df-neg 10872  df-nn 11638  df-2 11699  df-3 11700  df-n0 11897  df-xnn0 11967  df-z 11981  df-uz 12243  df-fz 12892  df-fzo 13033  df-hash 13690  df-word 13861  df-concat 13922  df-s1 13949  df-s2 14209  df-s3 14210  df-trkgc 26233  df-trkgb 26234  df-trkgcb 26235  df-trkg 26238  df-cgrg 26296
This theorem is referenced by: (None)
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