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| Mirrors > Home > ILE Home > Th. List > upgr1edc | GIF version | ||
| Description: A pseudograph with one edge. Such a graph is actually a simple pseudograph. (Contributed by Mario Carneiro, 12-Mar-2015.) (Revised by AV, 16-Oct-2020.) (Revised by AV, 21-Mar-2021.) (Proof shortened by AV, 17-Apr-2021.) |
| Ref | Expression |
|---|---|
| upgr1e.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| upgr1e.a | ⊢ (𝜑 → 𝐴 ∈ 𝑋) |
| upgr1e.b | ⊢ (𝜑 → 𝐵 ∈ 𝑉) |
| upgr1e.c | ⊢ (𝜑 → 𝐶 ∈ 𝑉) |
| upgr1edc.dc | ⊢ (𝜑 → DECID 𝐵 = 𝐶) |
| upgr1e.e | ⊢ (𝜑 → (iEdg‘𝐺) = {〈𝐴, {𝐵, 𝐶}〉}) |
| Ref | Expression |
|---|---|
| upgr1edc | ⊢ (𝜑 → 𝐺 ∈ UPGraph) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | upgr1e.a | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝑋) | |
| 2 | upgr1e.b | . . . . . . . 8 ⊢ (𝜑 → 𝐵 ∈ 𝑉) | |
| 3 | upgr1e.c | . . . . . . . 8 ⊢ (𝜑 → 𝐶 ∈ 𝑉) | |
| 4 | prexg 4324 | . . . . . . . 8 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑉) → {𝐵, 𝐶} ∈ V) | |
| 5 | 2, 3, 4 | syl2anc 411 | . . . . . . 7 ⊢ (𝜑 → {𝐵, 𝐶} ∈ V) |
| 6 | snidg 3717 | . . . . . . 7 ⊢ ({𝐵, 𝐶} ∈ V → {𝐵, 𝐶} ∈ {{𝐵, 𝐶}}) | |
| 7 | 5, 6 | syl 14 | . . . . . 6 ⊢ (𝜑 → {𝐵, 𝐶} ∈ {{𝐵, 𝐶}}) |
| 8 | 1, 7 | fsnd 5658 | . . . . 5 ⊢ (𝜑 → {〈𝐴, {𝐵, 𝐶}〉}:{𝐴}⟶{{𝐵, 𝐶}}) |
| 9 | 2, 3 | prssd 3852 | . . . . . . . 8 ⊢ (𝜑 → {𝐵, 𝐶} ⊆ 𝑉) |
| 10 | upgr1e.v | . . . . . . . 8 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 11 | 9, 10 | sseqtrdi 3285 | . . . . . . 7 ⊢ (𝜑 → {𝐵, 𝐶} ⊆ (Vtx‘𝐺)) |
| 12 | elpwg 3676 | . . . . . . . 8 ⊢ ({𝐵, 𝐶} ∈ V → ({𝐵, 𝐶} ∈ 𝒫 (Vtx‘𝐺) ↔ {𝐵, 𝐶} ⊆ (Vtx‘𝐺))) | |
| 13 | 5, 12 | syl 14 | . . . . . . 7 ⊢ (𝜑 → ({𝐵, 𝐶} ∈ 𝒫 (Vtx‘𝐺) ↔ {𝐵, 𝐶} ⊆ (Vtx‘𝐺))) |
| 14 | 11, 13 | mpbird 167 | . . . . . 6 ⊢ (𝜑 → {𝐵, 𝐶} ∈ 𝒫 (Vtx‘𝐺)) |
| 15 | upgr1edc.dc | . . . . . 6 ⊢ (𝜑 → DECID 𝐵 = 𝐶) | |
| 16 | 14, 2, 3, 15 | upgr1elem1 16107 | . . . . 5 ⊢ (𝜑 → {{𝐵, 𝐶}} ⊆ {𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 17 | 8, 16 | fssd 5521 | . . . 4 ⊢ (𝜑 → {〈𝐴, {𝐵, 𝐶}〉}:{𝐴}⟶{𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 18 | 17 | ffdmd 5533 | . . 3 ⊢ (𝜑 → {〈𝐴, {𝐵, 𝐶}〉}:dom {〈𝐴, {𝐵, 𝐶}〉}⟶{𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 19 | upgr1e.e | . . . 4 ⊢ (𝜑 → (iEdg‘𝐺) = {〈𝐴, {𝐵, 𝐶}〉}) | |
| 20 | 19 | dmeqd 4957 | . . . 4 ⊢ (𝜑 → dom (iEdg‘𝐺) = dom {〈𝐴, {𝐵, 𝐶}〉}) |
| 21 | 19, 20 | feq12d 5497 | . . 3 ⊢ (𝜑 → ((iEdg‘𝐺):dom (iEdg‘𝐺)⟶{𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)} ↔ {〈𝐴, {𝐵, 𝐶}〉}:dom {〈𝐴, {𝐵, 𝐶}〉}⟶{𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)})) |
| 22 | 18, 21 | mpbird 167 | . 2 ⊢ (𝜑 → (iEdg‘𝐺):dom (iEdg‘𝐺)⟶{𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 23 | 10 | 1vgrex 16007 | . . 3 ⊢ (𝐵 ∈ 𝑉 → 𝐺 ∈ V) |
| 24 | eqid 2232 | . . . 4 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
| 25 | eqid 2232 | . . . 4 ⊢ (iEdg‘𝐺) = (iEdg‘𝐺) | |
| 26 | 24, 25 | isupgren 16082 | . . 3 ⊢ (𝐺 ∈ V → (𝐺 ∈ UPGraph ↔ (iEdg‘𝐺):dom (iEdg‘𝐺)⟶{𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)})) |
| 27 | 2, 23, 26 | 3syl 17 | . 2 ⊢ (𝜑 → (𝐺 ∈ UPGraph ↔ (iEdg‘𝐺):dom (iEdg‘𝐺)⟶{𝑥 ∈ 𝒫 (Vtx‘𝐺) ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)})) |
| 28 | 22, 27 | mpbird 167 | 1 ⊢ (𝜑 → 𝐺 ∈ UPGraph) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 ∨ wo 716 DECID wdc 842 = wceq 1398 ∈ wcel 2203 {crab 2524 Vcvv 2812 ⊆ wss 3210 𝒫 cpw 3668 {csn 3688 {cpr 3689 〈cop 3691 class class class wbr 4108 dom cdm 4748 ⟶wf 5347 ‘cfv 5351 1oc1o 6639 2oc2o 6640 ≈ cen 6972 Vtxcvtx 15999 iEdgciedg 16000 UPGraphcupgr 16078 |
| 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 2205 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-nul 4235 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-iinf 4709 ax-cnex 8217 ax-resscn 8218 ax-1cn 8219 ax-1re 8220 ax-icn 8221 ax-addcl 8222 ax-addrcl 8223 ax-mulcl 8224 ax-addcom 8226 ax-mulcom 8227 ax-addass 8228 ax-mulass 8229 ax-distr 8230 ax-i2m1 8231 ax-1rid 8233 ax-0id 8234 ax-rnegex 8235 ax-cnre 8237 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2814 df-sbc 3042 df-csb 3138 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-if 3620 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-int 3949 df-br 4109 df-opab 4171 df-mpt 4172 df-tr 4208 df-id 4413 df-iord 4486 df-on 4488 df-suc 4491 df-iom 4712 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-iota 5311 df-fun 5353 df-fn 5354 df-f 5355 df-f1 5356 df-fo 5357 df-f1o 5358 df-fv 5359 df-riota 6002 df-ov 6052 df-oprab 6053 df-mpo 6054 df-1st 6333 df-2nd 6334 df-1o 6646 df-2o 6647 df-er 6766 df-en 6975 df-sub 8445 df-inn 9237 df-2 9295 df-3 9296 df-4 9297 df-5 9298 df-6 9299 df-7 9300 df-8 9301 df-9 9302 df-n0 9496 df-dec 9709 df-ndx 13207 df-slot 13208 df-base 13210 df-edgf 15992 df-vtx 16001 df-iedg 16002 df-upgren 16080 |
| This theorem is referenced by: upgr1eopdc 16110 upgr1een 16111 |
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