colperpex - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > colperpex		Structured version Visualization version GIF version

Theorem colperpex 28022

Description: In dimension 2 and above, on a line (𝐴𝐿𝐵) there is always a perpendicular 𝑃 from 𝐴 on a given plane (here given by 𝐶, in case 𝐶 does not lie on the line). Theorem 8.21 of [Schwabhauser] p. 63. (Contributed by Thierry Arnoux, 20-Nov-2019.)

**Hypotheses**
Ref	Expression
colperpex.p	⊢ 𝑃 = (Base‘𝐺)
colperpex.d	⊢ − = (dist‘𝐺)
colperpex.i	⊢ 𝐼 = (Itv‘𝐺)
colperpex.l	⊢ 𝐿 = (LineG‘𝐺)
colperpex.g	⊢ (𝜑 → 𝐺 ∈ TarskiG)
colperpex.1	⊢ (𝜑 → 𝐴 ∈ 𝑃)
colperpex.2	⊢ (𝜑 → 𝐵 ∈ 𝑃)
colperpex.3	⊢ (𝜑 → 𝐶 ∈ 𝑃)
colperpex.4	⊢ (𝜑 → 𝐴 ≠ 𝐵)
colperpex.5	⊢ (𝜑 → 𝐺Dim_TarskiG≥2)

**Assertion**
Ref	Expression
colperpex	⊢ (𝜑 → ∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝))))

Distinct variable groups: − ,𝑝,𝑡 𝐴,𝑝,𝑡 𝐵,𝑝,𝑡 𝐶,𝑝,𝑡 𝐺,𝑝,𝑡 𝐼,𝑝,𝑡 𝐿,𝑝,𝑡 𝑃,𝑝,𝑡 𝜑,𝑝,𝑡

Proof of Theorem colperpex Dummy variables 𝑠 𝑑 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		colperpex.p	. . . . 5 ⊢ 𝑃 = (Base‘𝐺)
2		colperpex.d	. . . . 5 ⊢ − = (dist‘𝐺)
3		colperpex.i	. . . . 5 ⊢ 𝐼 = (Itv‘𝐺)
4		colperpex.l	. . . . 5 ⊢ 𝐿 = (LineG‘𝐺)
5		colperpex.g	. . . . . 6 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
6	5	ad3antrrr 728	. . . . 5 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → 𝐺 ∈ TarskiG)
7		colperpex.1	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
8	7	ad3antrrr 728	. . . . 5 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → 𝐴 ∈ 𝑃)
9		colperpex.2	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
10	9	ad3antrrr 728	. . . . 5 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → 𝐵 ∈ 𝑃)
11		simplr 767	. . . . 5 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → 𝑑 ∈ 𝑃)
12		colperpex.4	. . . . . 6 ⊢ (𝜑 → 𝐴 ≠ 𝐵)
13	12	ad3antrrr 728	. . . . 5 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → 𝐴 ≠ 𝐵)
14		simpr 485	. . . . 5 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → ¬ 𝑑 ∈ (𝐴𝐿𝐵))
15	1, 2, 3, 4, 6, 8, 10, 11, 13, 14	colperpexlem3 28021	. . . 4 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → ∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝))))
16		simprl 769	. . . . . . 7 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → (𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵))
17		colperpex.3	. . . . . . . . 9 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
18	17	ad5antr 732	. . . . . . . 8 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → 𝐶 ∈ 𝑃)
19		simp-5r 784	. . . . . . . . 9 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → 𝐶 ∈ (𝐴𝐿𝐵))
20	19	orcd 871	. . . . . . . 8 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → (𝐶 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵))
21	5	ad5antr 732	. . . . . . . . 9 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → 𝐺 ∈ TarskiG)
22		simplr 767	. . . . . . . . 9 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → 𝑝 ∈ 𝑃)
23	1, 2, 3, 21, 18, 22	tgbtwntriv1 27780	. . . . . . . 8 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → 𝐶 ∈ (𝐶𝐼𝑝))
24		eleq1 2821	. . . . . . . . . . 11 ⊢ (𝑡 = 𝐶 → (𝑡 ∈ (𝐴𝐿𝐵) ↔ 𝐶 ∈ (𝐴𝐿𝐵)))
25	24	orbi1d 915	. . . . . . . . . 10 ⊢ (𝑡 = 𝐶 → ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ↔ (𝐶 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵)))
26		eleq1 2821	. . . . . . . . . 10 ⊢ (𝑡 = 𝐶 → (𝑡 ∈ (𝐶𝐼𝑝) ↔ 𝐶 ∈ (𝐶𝐼𝑝)))
27	25, 26	anbi12d 631	. . . . . . . . 9 ⊢ (𝑡 = 𝐶 → (((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝)) ↔ ((𝐶 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝐶 ∈ (𝐶𝐼𝑝))))
28	27	rspcev 3612	. . . . . . . 8 ⊢ ((𝐶 ∈ 𝑃 ∧ ((𝐶 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝐶 ∈ (𝐶𝐼𝑝))) → ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝)))
29	18, 20, 23, 28	syl12anc 835	. . . . . . 7 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝)))
30	16, 29	jca 512	. . . . . 6 ⊢ ((((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) ∧ ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝)))) → ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝))))
31	30	ex 413	. . . . 5 ⊢ (((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) ∧ 𝑝 ∈ 𝑃) → (((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝))) → ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝)))))
32	31	reximdva 3168	. . . 4 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → (∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑠 ∈ 𝑃 ((𝑠 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑠 ∈ (𝑑𝐼𝑝))) → ∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝)))))
33	15, 32	mpd 15	. . 3 ⊢ ((((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) ∧ 𝑑 ∈ 𝑃) ∧ ¬ 𝑑 ∈ (𝐴𝐿𝐵)) → ∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝))))
34	5	adantr 481	. . . 4 ⊢ ((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐺 ∈ TarskiG)
35		colperpex.5	. . . . 5 ⊢ (𝜑 → 𝐺Dim_TarskiG≥2)
36	35	adantr 481	. . . 4 ⊢ ((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐺Dim_TarskiG≥2)
37	7	adantr 481	. . . 4 ⊢ ((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐴 ∈ 𝑃)
38	9	adantr 481	. . . 4 ⊢ ((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐵 ∈ 𝑃)
39	12	adantr 481	. . . 4 ⊢ ((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐴 ≠ 𝐵)
40	1, 3, 4, 34, 36, 37, 38, 39	tglowdim2ln 27940	. . 3 ⊢ ((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) → ∃𝑑 ∈ 𝑃 ¬ 𝑑 ∈ (𝐴𝐿𝐵))
41	33, 40	r19.29a 3162	. 2 ⊢ ((𝜑 ∧ 𝐶 ∈ (𝐴𝐿𝐵)) → ∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝))))
42	5	adantr 481	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐺 ∈ TarskiG)
43	7	adantr 481	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐴 ∈ 𝑃)
44	9	adantr 481	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐵 ∈ 𝑃)
45	17	adantr 481	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐶 ∈ 𝑃)
46	12	adantr 481	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐶 ∈ (𝐴𝐿𝐵)) → 𝐴 ≠ 𝐵)
47		simpr 485	. . 3 ⊢ ((𝜑 ∧ ¬ 𝐶 ∈ (𝐴𝐿𝐵)) → ¬ 𝐶 ∈ (𝐴𝐿𝐵))
48	1, 2, 3, 4, 42, 43, 44, 45, 46, 47	colperpexlem3 28021	. 2 ⊢ ((𝜑 ∧ ¬ 𝐶 ∈ (𝐴𝐿𝐵)) → ∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝))))
49	41, 48	pm2.61dan 811	1 ⊢ (𝜑 → ∃𝑝 ∈ 𝑃 ((𝐴𝐿𝑝)(⟂G‘𝐺)(𝐴𝐿𝐵) ∧ ∃𝑡 ∈ 𝑃 ((𝑡 ∈ (𝐴𝐿𝐵) ∨ 𝐴 = 𝐵) ∧ 𝑡 ∈ (𝐶𝐼𝑝))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 396 ∨ wo 845 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∃wrex 3070 class class class wbr 5148 ‘cfv 6543 (class class class)co 7411 2c2 12269 Basecbs 17146 distcds 17208 TarskiGcstrkg 27716 Dim_TarskiG≥cstrkgld 27720 Itvcitv 27722 LineGclng 27723 ⟂Gcperpg 27984

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-oadd 8472 df-er 8705 df-map 8824 df-pm 8825 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-dju 9898 df-card 9936 df-pnf 11252 df-mnf 11253 df-xr 11254 df-ltxr 11255 df-le 11256 df-sub 11448 df-neg 11449 df-nn 12215 df-2 12277 df-3 12278 df-n0 12475 df-xnn0 12547 df-z 12561 df-uz 12825 df-fz 13487 df-fzo 13630 df-hash 14293 df-word 14467 df-concat 14523 df-s1 14548 df-s2 14801 df-s3 14802 df-trkgc 27737 df-trkgb 27738 df-trkgcb 27739 df-trkgld 27741 df-trkg 27742 df-cgrg 27800 df-leg 27872 df-mir 27942 df-rag 27983 df-perpg 27985

This theorem is referenced by: midex 28026 oppperpex 28042

W3C validator