Theorem rntpos 6528

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 2824	. . . . 5 ⊢ 𝑥 ∈ V
2	1	elrn 5025	. . . 4 ⊢ (𝑥 ∈ ran tpos 𝐹 ↔ ∃𝑦 𝑦tpos 𝐹𝑥)
3		vex 2824	. . . . . . . . 9 ⊢ 𝑦 ∈ V
4	3, 1	breldm 4985	. . . . . . . 8 ⊢ (𝑦tpos 𝐹𝑥 → 𝑦 ∈ dom tpos 𝐹)
5		dmtpos 6527	. . . . . . . . 9 ⊢ (Rel dom 𝐹 → dom tpos 𝐹 = ◡dom 𝐹)
6	5	eleq2d 2308	. . . . . . . 8 ⊢ (Rel dom 𝐹 → (𝑦 ∈ dom tpos 𝐹 ↔ 𝑦 ∈ ◡dom 𝐹))
7	4, 6	imbitrid 154	. . . . . . 7 ⊢ (Rel dom 𝐹 → (𝑦tpos 𝐹𝑥 → 𝑦 ∈ ◡dom 𝐹))
8		relcnv 5165	. . . . . . . 8 ⊢ Rel ◡dom 𝐹
9		elrel 4877	. . . . . . . 8 ⊢ ((Rel ◡dom 𝐹 ∧ 𝑦 ∈ ◡dom 𝐹) → ∃𝑤∃𝑧 𝑦 = ⟨𝑤, 𝑧⟩)
10	8, 9	mpan 428	. . . . . . 7 ⊢ (𝑦 ∈ ◡dom 𝐹 → ∃𝑤∃𝑧 𝑦 = ⟨𝑤, 𝑧⟩)
11	7, 10	syl6 33	. . . . . 6 ⊢ (Rel dom 𝐹 → (𝑦tpos 𝐹𝑥 → ∃𝑤∃𝑧 𝑦 = ⟨𝑤, 𝑧⟩))
12		breq1 4133	. . . . . . . . 9 ⊢ (𝑦 = ⟨𝑤, 𝑧⟩ → (𝑦tpos 𝐹𝑥 ↔ ⟨𝑤, 𝑧⟩tpos 𝐹𝑥))
13		vex 2824	. . . . . . . . . 10 ⊢ 𝑤 ∈ V
14		vex 2824	. . . . . . . . . 10 ⊢ 𝑧 ∈ V
15		brtposg 6525	. . . . . . . . . 10 ⊢ ((𝑤 ∈ V ∧ 𝑧 ∈ V ∧ 𝑥 ∈ V) → (⟨𝑤, 𝑧⟩tpos 𝐹𝑥 ↔ ⟨𝑧, 𝑤⟩𝐹𝑥))
16	13, 14, 1, 15	mp3an 1378	. . . . . . . . 9 ⊢ (⟨𝑤, 𝑧⟩tpos 𝐹𝑥 ↔ ⟨𝑧, 𝑤⟩𝐹𝑥)
17	12, 16	bitrdi 196	. . . . . . . 8 ⊢ (𝑦 = ⟨𝑤, 𝑧⟩ → (𝑦tpos 𝐹𝑥 ↔ ⟨𝑧, 𝑤⟩𝐹𝑥))
18	14, 13	opex 4369	. . . . . . . . 9 ⊢ ⟨𝑧, 𝑤⟩ ∈ V
19	18, 1	brelrn 5015	. . . . . . . 8 ⊢ (⟨𝑧, 𝑤⟩𝐹𝑥 → 𝑥 ∈ ran 𝐹)
20	17, 19	biimtrdi 163	. . . . . . 7 ⊢ (𝑦 = ⟨𝑤, 𝑧⟩ → (𝑦tpos 𝐹𝑥 → 𝑥 ∈ ran 𝐹))
21	20	exlimivv 1952	. . . . . 6 ⊢ (∃𝑤∃𝑧 𝑦 = ⟨𝑤, 𝑧⟩ → (𝑦tpos 𝐹𝑥 → 𝑥 ∈ ran 𝐹))
22	11, 21	syli 37	. . . . 5 ⊢ (Rel dom 𝐹 → (𝑦tpos 𝐹𝑥 → 𝑥 ∈ ran 𝐹))
23	22	exlimdv 1872	. . . 4 ⊢ (Rel dom 𝐹 → (∃𝑦 𝑦tpos 𝐹𝑥 → 𝑥 ∈ ran 𝐹))
24	2, 23	biimtrid 152	. . 3 ⊢ (Rel dom 𝐹 → (𝑥 ∈ ran tpos 𝐹 → 𝑥 ∈ ran 𝐹))
25	1	elrn 5025	. . . 4 ⊢ (𝑥 ∈ ran 𝐹 ↔ ∃𝑦 𝑦𝐹𝑥)
26	3, 1	breldm 4985	. . . . . . 7 ⊢ (𝑦𝐹𝑥 → 𝑦 ∈ dom 𝐹)
27		elrel 4877	. . . . . . . 8 ⊢ ((Rel dom 𝐹 ∧ 𝑦 ∈ dom 𝐹) → ∃𝑧∃𝑤 𝑦 = ⟨𝑧, 𝑤⟩)
28	27	ex 115	. . . . . . 7 ⊢ (Rel dom 𝐹 → (𝑦 ∈ dom 𝐹 → ∃𝑧∃𝑤 𝑦 = ⟨𝑧, 𝑤⟩))
29	26, 28	syl5 32	. . . . . 6 ⊢ (Rel dom 𝐹 → (𝑦𝐹𝑥 → ∃𝑧∃𝑤 𝑦 = ⟨𝑧, 𝑤⟩))
30		breq1 4133	. . . . . . . . 9 ⊢ (𝑦 = ⟨𝑧, 𝑤⟩ → (𝑦𝐹𝑥 ↔ ⟨𝑧, 𝑤⟩𝐹𝑥))
31	30, 16	bitr4di 198	. . . . . . . 8 ⊢ (𝑦 = ⟨𝑧, 𝑤⟩ → (𝑦𝐹𝑥 ↔ ⟨𝑤, 𝑧⟩tpos 𝐹𝑥))
32	13, 14	opex 4369	. . . . . . . . 9 ⊢ ⟨𝑤, 𝑧⟩ ∈ V
33	32, 1	brelrn 5015	. . . . . . . 8 ⊢ (⟨𝑤, 𝑧⟩tpos 𝐹𝑥 → 𝑥 ∈ ran tpos 𝐹)
34	31, 33	biimtrdi 163	. . . . . . 7 ⊢ (𝑦 = ⟨𝑧, 𝑤⟩ → (𝑦𝐹𝑥 → 𝑥 ∈ ran tpos 𝐹))
35	34	exlimivv 1952	. . . . . 6 ⊢ (∃𝑧∃𝑤 𝑦 = ⟨𝑧, 𝑤⟩ → (𝑦𝐹𝑥 → 𝑥 ∈ ran tpos 𝐹))
36	29, 35	syli 37	. . . . 5 ⊢ (Rel dom 𝐹 → (𝑦𝐹𝑥 → 𝑥 ∈ ran tpos 𝐹))
37	36	exlimdv 1872	. . . 4 ⊢ (Rel dom 𝐹 → (∃𝑦 𝑦𝐹𝑥 → 𝑥 ∈ ran tpos 𝐹))
38	25, 37	biimtrid 152	. . 3 ⊢ (Rel dom 𝐹 → (𝑥 ∈ ran 𝐹 → 𝑥 ∈ ran tpos 𝐹))
39	24, 38	impbid 129	. 2 ⊢ (Rel dom 𝐹 → (𝑥 ∈ ran tpos 𝐹 ↔ 𝑥 ∈ ran 𝐹))
40	39	eqrdv 2236	1 ⊢ (Rel dom 𝐹 → ran tpos 𝐹 = ran 𝐹)

This proof depends on syntax axioms:   → wi 4   ↔ wb 105   = wceq 1402  ∃wex 1545   ∈ wcel 2209  Vcvv 2821  ⟨cop 3712   class class class wbr 4130  ^◡ccnv 4773  dom cdm 4774  ran crn 4775  Rel wrel 4779  tpos ctpos 6515

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-nul 4259  ax-pow 4311  ax-pr 4346  ax-un 4578

This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-fv 5385  df-tpos 6516

This theorem is used by:  tposfo2  6538