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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 16019 | . . . . 5 ⊢ ((𝐺 ∈ UPGraph ∧ 𝐸 Fn 𝐴) → 𝐸:𝐴⟶{𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 4 | 3 | ffvelcdmda 5790 | . . . 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 4096 | . . . . 5 ⊢ (𝑥 = (𝐸‘𝐹) → (𝑥 ≈ 1o ↔ (𝐸‘𝐹) ≈ 1o)) | |
| 7 | breq1 4096 | . . . . 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 2963 | . . 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 7022 | . . 3 ⊢ ((𝐸‘𝐹) ≈ 1o → ∃𝑗 𝑗 ∈ (𝐸‘𝐹)) | |
| 12 | en2m 7042 | . . 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 2202 {crab 2515 𝒫 cpw 3656 class class class wbr 4093 Fn wfn 5328 ‘cfv 5333 1oc1o 6618 2oc2o 6619 ≈ cen 6950 Vtxcvtx 15933 iEdgciedg 15934 UPGraphcupgr 16012 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-addcom 8175 ax-mulcom 8176 ax-addass 8177 ax-mulass 8178 ax-distr 8179 ax-i2m1 8180 ax-1rid 8182 ax-0id 8183 ax-rnegex 8184 ax-cnre 8186 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-ral 2516 df-rex 2517 df-reu 2518 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-if 3608 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-id 4396 df-iord 4469 df-on 4471 df-suc 4474 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-1o 6625 df-2o 6626 df-en 6953 df-sub 8395 df-inn 9187 df-2 9245 df-3 9246 df-4 9247 df-5 9248 df-6 9249 df-7 9250 df-8 9251 df-9 9252 df-n0 9446 df-dec 9655 df-ndx 13146 df-slot 13147 df-base 13149 df-edgf 15926 df-vtx 15935 df-iedg 15936 df-upgren 16014 |
| This theorem is referenced by: (None) |
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