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| Mirrors > Home > ILE Home > Th. List > upgrm | GIF version | ||
| Description: An edge is an inhabited subset of vertices. (Contributed by Mario Carneiro, 11-Mar-2015.) (Revised by AV, 10-Oct-2020.) |
| Ref | Expression |
|---|---|
| isupgr.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| isupgr.e | ⊢ 𝐸 = (iEdg‘𝐺) |
| Ref | Expression |
|---|---|
| upgrm | ⊢ ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴 ∧ 𝐹 ∈ 𝐴) → ∃𝑗 𝑗 ∈ (𝐸‘𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isupgr.v | . . . . . 6 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 2 | isupgr.e | . . . . . 6 ⊢ 𝐸 = (iEdg‘𝐺) | |
| 3 | 1, 2 | upgrfnen 16205 | . . . . 5 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴) → 𝐸:𝐴⟶{𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 4 | 3 | ffvelcdmda 5817 | . . . 4 ⊢ (((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴) ∧ 𝐹 ∈ 𝐴) → (𝐸‘𝐹) ∈ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 5 | 4 | 3impa 1221 | . . 3 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴 ∧ 𝐹 ∈ 𝐴) → (𝐸‘𝐹) ∈ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 6 | breq1 4117 | . . . . 5 ⊢ (𝑥 = (𝐸‘𝐹) → (𝑥 ≈ 1o ↔ (𝐸‘𝐹) ≈ 1o)) | |
| 7 | breq1 4117 | . . . . 5 ⊢ (𝑥 = (𝐸‘𝐹) → (𝑥 ≈ 2o ↔ (𝐸‘𝐹) ≈ 2o)) | |
| 8 | 6, 7 | orbi12d 801 | . . . 4 ⊢ (𝑥 = (𝐸‘𝐹) → ((𝑥 ≈ 1o ∨ 𝑥 ≈ 2o) ↔ ((𝐸‘𝐹) ≈ 1o ∨ (𝐸‘𝐹) ≈ 2o))) |
| 9 | 8 | elrab 2976 | . . 3 ⊢ ((𝐸‘𝐹) ∈ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)} ↔ ((𝐸‘𝐹) ∈ 𝒫 𝑉 ∧ ((𝐸‘𝐹) ≈ 1o ∨ (𝐸‘𝐹) ≈ 2o))) |
| 10 | 5, 9 | sylib 122 | . 2 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴 ∧ 𝐹 ∈ 𝐴) → ((𝐸‘𝐹) ∈ 𝒫 𝑉 ∧ ((𝐸‘𝐹) ≈ 1o ∨ (𝐸‘𝐹) ≈ 2o))) |
| 11 | en1m 7058 | . . 3 ⊢ ((𝐸‘𝐹) ≈ 1o → ∃𝑗 𝑗 ∈ (𝐸‘𝐹)) | |
| 12 | en2m 7079 | . . 3 ⊢ ((𝐸‘𝐹) ≈ 2o → ∃𝑗 𝑗 ∈ (𝐸‘𝐹)) | |
| 13 | 11, 12 | jaoi 724 | . 2 ⊢ (((𝐸‘𝐹) ≈ 1o ∨ (𝐸‘𝐹) ≈ 2o) → ∃𝑗 𝑗 ∈ (𝐸‘𝐹)) |
| 14 | 10, 13 | simpl2im 386 | 1 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴 ∧ 𝐹 ∈ 𝐴) → ∃𝑗 𝑗 ∈ (𝐸‘𝐹)) |
| 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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