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Theorem tz9.12lem1 8823
Description: Lemma for tz9.12 8826. (Contributed by NM, 22-Sep-2003.) (Revised by Mario Carneiro, 11-Sep-2015.)
Hypotheses
Ref Expression
tz9.12lem.1 𝐴 ∈ V
tz9.12lem.2 𝐹 = (𝑧 ∈ V ↦ {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)})
Assertion
Ref Expression
tz9.12lem1 (𝐹𝐴) ⊆ On
Distinct variable group:   𝑧,𝑣,𝐴
Allowed substitution hints:   𝐹(𝑧,𝑣)

Proof of Theorem tz9.12lem1
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 imassrn 5635 . 2 (𝐹𝐴) ⊆ ran 𝐹
2 tz9.12lem.2 . . . 4 𝐹 = (𝑧 ∈ V ↦ {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)})
32rnmpt 5526 . . 3 ran 𝐹 = {𝑥 ∣ ∃𝑧 ∈ V 𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)}}
4 id 22 . . . . . 6 (𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} → 𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)})
5 ssrab2 3828 . . . . . . 7 {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ⊆ On
6 eqvisset 3351 . . . . . . . 8 (𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} → {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ∈ V)
7 intex 4969 . . . . . . . 8 ({𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ≠ ∅ ↔ {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ∈ V)
86, 7sylibr 224 . . . . . . 7 (𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} → {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ≠ ∅)
9 oninton 7165 . . . . . . 7 (({𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ⊆ On ∧ {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ≠ ∅) → {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ∈ On)
105, 8, 9sylancr 698 . . . . . 6 (𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} → {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} ∈ On)
114, 10eqeltrd 2839 . . . . 5 (𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} → 𝑥 ∈ On)
1211rexlimivw 3167 . . . 4 (∃𝑧 ∈ V 𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)} → 𝑥 ∈ On)
1312abssi 3818 . . 3 {𝑥 ∣ ∃𝑧 ∈ V 𝑥 = {𝑣 ∈ On ∣ 𝑧 ∈ (𝑅1𝑣)}} ⊆ On
143, 13eqsstri 3776 . 2 ran 𝐹 ⊆ On
151, 14sstri 3753 1 (𝐹𝐴) ⊆ On
Colors of variables: wff setvar class
Syntax hints:   = wceq 1632  wcel 2139  {cab 2746  wne 2932  wrex 3051  {crab 3054  Vcvv 3340  wss 3715  c0 4058   cint 4627  cmpt 4881  ran crn 5267  cima 5269  Oncon0 5884  cfv 6049  𝑅1cr1 8798
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pr 5055  ax-un 7114
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-rab 3059  df-v 3342  df-sbc 3577  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-pss 3731  df-nul 4059  df-if 4231  df-sn 4322  df-pr 4324  df-tp 4326  df-op 4328  df-uni 4589  df-int 4628  df-br 4805  df-opab 4865  df-mpt 4882  df-tr 4905  df-eprel 5179  df-po 5187  df-so 5188  df-fr 5225  df-we 5227  df-xp 5272  df-cnv 5274  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-ord 5887  df-on 5888
This theorem is referenced by:  tz9.12lem2  8824  tz9.12lem3  8825
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