Theorem rntpos 8220

Description: The range of tpos 𝐹 when dom 𝐹 is a relation. (Contributed by Mario Carneiro, 10-Sep-2015.)

Assertion

Ref	Expression
rntpos	⊢ (Rel dom 𝐹 → ran tpos 𝐹 = ran 𝐹)

Proof of Theorem rntpos

Dummy variables 𝑥 𝑦 𝑤 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		vex 3454	. . . . 5 ⊢ 𝑧 ∈ V
2	1	elrn 5859	. . . 4 ⊢ (𝑧 ∈ ran tpos 𝐹 ↔ ∃𝑤 𝑤tpos 𝐹𝑧)
3		vex 3454	. . . . . . . . 9 ⊢ 𝑤 ∈ V
4	3, 1	breldm 5874	. . . . . . . 8 ⊢ (𝑤tpos 𝐹𝑧 → 𝑤 ∈ dom tpos 𝐹)
5		dmtpos 8219	. . . . . . . . 9 ⊢ (Rel dom 𝐹 → dom tpos 𝐹 = ◡dom 𝐹)
6	5	eleq2d 2815	. . . . . . . 8 ⊢ (Rel dom 𝐹 → (𝑤 ∈ dom tpos 𝐹 ↔ 𝑤 ∈ ◡dom 𝐹))
7	4, 6	imbitrid 244	. . . . . . 7 ⊢ (Rel dom 𝐹 → (𝑤tpos 𝐹𝑧 → 𝑤 ∈ ◡dom 𝐹))
8		relcnv 6077	. . . . . . . 8 ⊢ Rel ◡dom 𝐹
9		elrel 5763	. . . . . . . 8 ⊢ ((Rel ◡dom 𝐹 ∧ 𝑤 ∈ ◡dom 𝐹) → ∃𝑥∃𝑦 𝑤 = ⟨𝑥, 𝑦⟩)
10	8, 9	mpan 690	. . . . . . 7 ⊢ (𝑤 ∈ ◡dom 𝐹 → ∃𝑥∃𝑦 𝑤 = ⟨𝑥, 𝑦⟩)
11	7, 10	syl6 35	. . . . . 6 ⊢ (Rel dom 𝐹 → (𝑤tpos 𝐹𝑧 → ∃𝑥∃𝑦 𝑤 = ⟨𝑥, 𝑦⟩))
12		breq1 5112	. . . . . . . . 9 ⊢ (𝑤 = ⟨𝑥, 𝑦⟩ → (𝑤tpos 𝐹𝑧 ↔ ⟨𝑥, 𝑦⟩tpos 𝐹𝑧))
13		brtpos 8216	. . . . . . . . . 10 ⊢ (𝑧 ∈ V → (⟨𝑥, 𝑦⟩tpos 𝐹𝑧 ↔ ⟨𝑦, 𝑥⟩𝐹𝑧))
14	13	elv 3455	. . . . . . . . 9 ⊢ (⟨𝑥, 𝑦⟩tpos 𝐹𝑧 ↔ ⟨𝑦, 𝑥⟩𝐹𝑧)
15	12, 14	bitrdi 287	. . . . . . . 8 ⊢ (𝑤 = ⟨𝑥, 𝑦⟩ → (𝑤tpos 𝐹𝑧 ↔ ⟨𝑦, 𝑥⟩𝐹𝑧))
16		opex 5426	. . . . . . . . 9 ⊢ ⟨𝑦, 𝑥⟩ ∈ V
17	16, 1	brelrn 5908	. . . . . . . 8 ⊢ (⟨𝑦, 𝑥⟩𝐹𝑧 → 𝑧 ∈ ran 𝐹)
18	15, 17	biimtrdi 253	. . . . . . 7 ⊢ (𝑤 = ⟨𝑥, 𝑦⟩ → (𝑤tpos 𝐹𝑧 → 𝑧 ∈ ran 𝐹))
19	18	exlimivv 1932	. . . . . 6 ⊢ (∃𝑥∃𝑦 𝑤 = ⟨𝑥, 𝑦⟩ → (𝑤tpos 𝐹𝑧 → 𝑧 ∈ ran 𝐹))
20	11, 19	syli 39	. . . . 5 ⊢ (Rel dom 𝐹 → (𝑤tpos 𝐹𝑧 → 𝑧 ∈ ran 𝐹))
21	20	exlimdv 1933	. . . 4 ⊢ (Rel dom 𝐹 → (∃𝑤 𝑤tpos 𝐹𝑧 → 𝑧 ∈ ran 𝐹))
22	2, 21	biimtrid 242	. . 3 ⊢ (Rel dom 𝐹 → (𝑧 ∈ ran tpos 𝐹 → 𝑧 ∈ ran 𝐹))
23	1	elrn 5859	. . . 4 ⊢ (𝑧 ∈ ran 𝐹 ↔ ∃𝑤 𝑤𝐹𝑧)
24	3, 1	breldm 5874	. . . . . . 7 ⊢ (𝑤𝐹𝑧 → 𝑤 ∈ dom 𝐹)
25		elrel 5763	. . . . . . . 8 ⊢ ((Rel dom 𝐹 ∧ 𝑤 ∈ dom 𝐹) → ∃𝑦∃𝑥 𝑤 = ⟨𝑦, 𝑥⟩)
26	25	ex 412	. . . . . . 7 ⊢ (Rel dom 𝐹 → (𝑤 ∈ dom 𝐹 → ∃𝑦∃𝑥 𝑤 = ⟨𝑦, 𝑥⟩))
27	24, 26	syl5 34	. . . . . 6 ⊢ (Rel dom 𝐹 → (𝑤𝐹𝑧 → ∃𝑦∃𝑥 𝑤 = ⟨𝑦, 𝑥⟩))
28		breq1 5112	. . . . . . . . 9 ⊢ (𝑤 = ⟨𝑦, 𝑥⟩ → (𝑤𝐹𝑧 ↔ ⟨𝑦, 𝑥⟩𝐹𝑧))
29	28, 14	bitr4di 289	. . . . . . . 8 ⊢ (𝑤 = ⟨𝑦, 𝑥⟩ → (𝑤𝐹𝑧 ↔ ⟨𝑥, 𝑦⟩tpos 𝐹𝑧))
30		opex 5426	. . . . . . . . 9 ⊢ ⟨𝑥, 𝑦⟩ ∈ V
31	30, 1	brelrn 5908	. . . . . . . 8 ⊢ (⟨𝑥, 𝑦⟩tpos 𝐹𝑧 → 𝑧 ∈ ran tpos 𝐹)
32	29, 31	biimtrdi 253	. . . . . . 7 ⊢ (𝑤 = ⟨𝑦, 𝑥⟩ → (𝑤𝐹𝑧 → 𝑧 ∈ ran tpos 𝐹))
33	32	exlimivv 1932	. . . . . 6 ⊢ (∃𝑦∃𝑥 𝑤 = ⟨𝑦, 𝑥⟩ → (𝑤𝐹𝑧 → 𝑧 ∈ ran tpos 𝐹))
34	27, 33	syli 39	. . . . 5 ⊢ (Rel dom 𝐹 → (𝑤𝐹𝑧 → 𝑧 ∈ ran tpos 𝐹))
35	34	exlimdv 1933	. . . 4 ⊢ (Rel dom 𝐹 → (∃𝑤 𝑤𝐹𝑧 → 𝑧 ∈ ran tpos 𝐹))
36	23, 35	biimtrid 242	. . 3 ⊢ (Rel dom 𝐹 → (𝑧 ∈ ran 𝐹 → 𝑧 ∈ ran tpos 𝐹))
37	22, 36	impbid 212	. 2 ⊢ (Rel dom 𝐹 → (𝑧 ∈ ran tpos 𝐹 ↔ 𝑧 ∈ ran 𝐹))
38	37	eqrdv 2728	1 ⊢ (Rel dom 𝐹 → ran tpos 𝐹 = ran 𝐹)

Syntax hints:   → wi 4   ↔ wb 206   = wceq 1540  ∃wex 1779   ∈ wcel 2109  Vcvv 3450  ⟨cop 4597   class class class wbr 5109  ^◡ccnv 5639  dom cdm 5640  ran crn 5641  Rel wrel 5645  tpos ctpos 8206

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2702  ax-sep 5253  ax-nul 5263  ax-pow 5322  ax-pr 5389  ax-un 7713

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2534  df-eu 2563  df-clab 2709  df-cleq 2722  df-clel 2804  df-nfc 2879  df-ne 2927  df-ral 3046  df-rex 3055  df-rab 3409  df-v 3452  df-dif 3919  df-un 3921  df-in 3923  df-ss 3933  df-nul 4299  df-if 4491  df-pw 4567  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-br 5110  df-opab 5172  df-mpt 5191  df-id 5535  df-xp 5646  df-rel 5647  df-cnv 5648  df-co 5649  df-dm 5650  df-rn 5651  df-res 5652  df-ima 5653  df-iota 6466  df-fun 6515  df-fn 6516  df-fv 6521  df-tpos 8207

This theorem is referenced by:  tposfo2  8230  oppchofcl  18227  oyoncl  18237