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Theorem upgrm 16207
Description: An edge is an inhabited subset of vertices. (Contributed by Mario Carneiro, 11-Mar-2015.) (Revised by AV, 10-Oct-2020.)
Hypotheses
Ref Expression
isupgr.v 𝑉 = (Vtx‘𝐺)
isupgr.e 𝐸 = (iEdg‘𝐺)
Assertion
Ref Expression
upgrm ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴𝐹𝐴) → ∃𝑗 𝑗 ∈ (𝐸𝐹))
Distinct variable groups:   𝑗,𝐸   𝑗,𝐹
Allowed substitution hints:   𝐴(𝑗)   𝐺(𝑗)   𝑉(𝑗)

Proof of Theorem upgrm
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 isupgr.v . . . . . 6 𝑉 = (Vtx‘𝐺)
2 isupgr.e . . . . . 6 𝐸 = (iEdg‘𝐺)
31, 2upgrfnen 16205 . . . . 5 ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴) → 𝐸:𝐴⟶{𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o𝑥 ≈ 2o)})
43ffvelcdmda 5817 . . . 4 (((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴) ∧ 𝐹𝐴) → (𝐸𝐹) ∈ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o𝑥 ≈ 2o)})
543impa 1221 . . 3 ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴𝐹𝐴) → (𝐸𝐹) ∈ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o𝑥 ≈ 2o)})
6 breq1 4117 . . . . 5 (𝑥 = (𝐸𝐹) → (𝑥 ≈ 1o ↔ (𝐸𝐹) ≈ 1o))
7 breq1 4117 . . . . 5 (𝑥 = (𝐸𝐹) → (𝑥 ≈ 2o ↔ (𝐸𝐹) ≈ 2o))
86, 7orbi12d 801 . . . 4 (𝑥 = (𝐸𝐹) → ((𝑥 ≈ 1o𝑥 ≈ 2o) ↔ ((𝐸𝐹) ≈ 1o ∨ (𝐸𝐹) ≈ 2o)))
98elrab 2976 . . 3 ((𝐸𝐹) ∈ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o𝑥 ≈ 2o)} ↔ ((𝐸𝐹) ∈ 𝒫 𝑉 ∧ ((𝐸𝐹) ≈ 1o ∨ (𝐸𝐹) ≈ 2o)))
105, 9sylib 122 . 2 ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴𝐹𝐴) → ((𝐸𝐹) ∈ 𝒫 𝑉 ∧ ((𝐸𝐹) ≈ 1o ∨ (𝐸𝐹) ≈ 2o)))
11 en1m 7058 . . 3 ((𝐸𝐹) ≈ 1o → ∃𝑗 𝑗 ∈ (𝐸𝐹))
12 en2m 7079 . . 3 ((𝐸𝐹) ≈ 2o → ∃𝑗 𝑗 ∈ (𝐸𝐹))
1311, 12jaoi 724 . 2 (((𝐸𝐹) ≈ 1o ∨ (𝐸𝐹) ≈ 2o) → ∃𝑗 𝑗 ∈ (𝐸𝐹))
1410, 13simpl2im 386 1 ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴𝐹𝐴) → ∃𝑗 𝑗 ∈ (𝐸𝐹))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wo 716  w3a 1005   = wceq 1398  wex 1541  wcel 2205  {crab 2526  𝒫 cpw 3674   class class class wbr 4114   Fn wfn 5352  cfv 5357  1oc1o 6653  2oc2o 6654  cen 6986  Vtxcvtx 16119  iEdgciedg 16120  UPGraphcupgr 16198
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-cnex 8234  ax-resscn 8235  ax-1cn 8236  ax-1re 8237  ax-icn 8238  ax-addcl 8239  ax-addrcl 8240  ax-mulcl 8241  ax-addcom 8243  ax-mulcom 8244  ax-addass 8245  ax-mulass 8246  ax-distr 8247  ax-i2m1 8248  ax-1rid 8250  ax-0id 8251  ax-rnegex 8252  ax-cnre 8254
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-if 3625  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-br 4115  df-opab 4177  df-mpt 4178  df-tr 4214  df-id 4419  df-iord 4492  df-on 4494  df-suc 4497  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-riota 6011  df-ov 6061  df-oprab 6062  df-mpo 6063  df-1st 6347  df-2nd 6348  df-1o 6660  df-2o 6661  df-en 6989  df-sub 8462  df-inn 9255  df-2 9313  df-3 9314  df-4 9315  df-5 9316  df-6 9317  df-7 9318  df-8 9319  df-9 9320  df-n0 9514  df-dec 9728  df-ndx 13299  df-slot 13300  df-base 13302  df-edgf 16112  df-vtx 16121  df-iedg 16122  df-upgren 16200
This theorem is referenced by: (None)
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