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| Mirrors > Home > MPE Home > Th. List > uspgredg2vlem | Structured version Visualization version GIF version | ||
| Description: Lemma for uspgredg2v 29583. (Contributed by Alexander van der Vekens, 4-Jan-2018.) (Revised by AV, 6-Dec-2020.) |
| Ref | Expression |
|---|---|
| uspgredg2v.v | ⊢ 𝑉 = (Vtx‘𝐺) |
| uspgredg2v.e | ⊢ 𝐸 = (Edg‘𝐺) |
| uspgredg2v.a | ⊢ 𝐴 = {𝑒 ∈ 𝐸 ∣ 𝑁 ∈ 𝑒} |
| Ref | Expression |
|---|---|
| uspgredg2vlem | ⊢ ((𝐺 ∈ USPGraph ∧ 𝑌 ∈ 𝐴) → (℩𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧}) ∈ 𝑉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eleq2 2852 | . . 3 ⊢ (𝑒 = 𝑌 → (𝑁 ∈ 𝑒 ↔ 𝑁 ∈ 𝑌)) | |
| 2 | uspgredg2v.a | . . 3 ⊢ 𝐴 = {𝑒 ∈ 𝐸 ∣ 𝑁 ∈ 𝑒} | |
| 3 | 1, 2 | elrab2 3654 | . 2 ⊢ (𝑌 ∈ 𝐴 ↔ (𝑌 ∈ 𝐸 ∧ 𝑁 ∈ 𝑌)) |
| 4 | simpl 487 | . . . 4 ⊢ ((𝐺 ∈ USPGraph ∧ (𝑌 ∈ 𝐸 ∧ 𝑁 ∈ 𝑌)) → 𝐺 ∈ USPGraph) | |
| 5 | uspgredg2v.e | . . . . . . 7 ⊢ 𝐸 = (Edg‘𝐺) | |
| 6 | 5 | eleq2i 2855 | . . . . . 6 ⊢ (𝑌 ∈ 𝐸 ↔ 𝑌 ∈ (Edg‘𝐺)) |
| 7 | 6 | biimpi 219 | . . . . 5 ⊢ (𝑌 ∈ 𝐸 → 𝑌 ∈ (Edg‘𝐺)) |
| 8 | 7 | ad2antrl 740 | . . . 4 ⊢ ((𝐺 ∈ USPGraph ∧ (𝑌 ∈ 𝐸 ∧ 𝑁 ∈ 𝑌)) → 𝑌 ∈ (Edg‘𝐺)) |
| 9 | simprr 784 | . . . 4 ⊢ ((𝐺 ∈ USPGraph ∧ (𝑌 ∈ 𝐸 ∧ 𝑁 ∈ 𝑌)) → 𝑁 ∈ 𝑌) | |
| 10 | 4, 8, 9 | 3jca 1146 | . . 3 ⊢ ((𝐺 ∈ USPGraph ∧ (𝑌 ∈ 𝐸 ∧ 𝑁 ∈ 𝑌)) → (𝐺 ∈ USPGraph ∧ 𝑌 ∈ (Edg‘𝐺) ∧ 𝑁 ∈ 𝑌)) |
| 11 | uspgredg2vtxeu 29579 | . . . 4 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑌 ∈ (Edg‘𝐺) ∧ 𝑁 ∈ 𝑌) → ∃!𝑧 ∈ (Vtx‘𝐺)𝑌 = {𝑁, 𝑧}) | |
| 12 | uspgredg2v.v | . . . . 5 ⊢ 𝑉 = (Vtx‘𝐺) | |
| 13 | reueq1 3401 | . . . . 5 ⊢ (𝑉 = (Vtx‘𝐺) → (∃!𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧} ↔ ∃!𝑧 ∈ (Vtx‘𝐺)𝑌 = {𝑁, 𝑧})) | |
| 14 | 12, 13 | ax-mp 5 | . . . 4 ⊢ (∃!𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧} ↔ ∃!𝑧 ∈ (Vtx‘𝐺)𝑌 = {𝑁, 𝑧}) |
| 15 | 11, 14 | sylibr 237 | . . 3 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑌 ∈ (Edg‘𝐺) ∧ 𝑁 ∈ 𝑌) → ∃!𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧}) |
| 16 | riotacl 7384 | . . 3 ⊢ (∃!𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧} → (℩𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧}) ∈ 𝑉) | |
| 17 | 10, 15, 16 | 3syl 19 | . 2 ⊢ ((𝐺 ∈ USPGraph ∧ (𝑌 ∈ 𝐸 ∧ 𝑁 ∈ 𝑌)) → (℩𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧}) ∈ 𝑉) |
| 18 | 3, 17 | sylan2b 605 | 1 ⊢ ((𝐺 ∈ USPGraph ∧ 𝑌 ∈ 𝐴) → (℩𝑧 ∈ 𝑉 𝑌 = {𝑁, 𝑧}) ∈ 𝑉) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1103 = wceq 1570 ∈ wcel 2143 ∃!wreu 3367 {crab 3416 {cpr 4591 ‘cfv 6536 ℩crio 7366 Vtxcvtx 29355 Edgcedg 29406 USPGraphcuspgr 29507 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11160 ax-resscn 11161 ax-1cn 11162 ax-icn 11163 ax-addcl 11164 ax-addrcl 11165 ax-mulcl 11166 ax-mulrcl 11167 ax-mulcom 11168 ax-addass 11169 ax-mulass 11170 ax-distr 11171 ax-i2m1 11172 ax-1ne0 11173 ax-1rid 11174 ax-rnegex 11175 ax-rrecex 11176 ax-cnre 11177 ax-pre-lttri 11178 ax-pre-lttrn 11179 ax-pre-ltadd 11180 ax-pre-mulgt0 11181 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-int 4913 df-iun 4958 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7859 df-1st 7982 df-2nd 7983 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-1o 8449 df-2o 8450 df-oadd 8453 df-er 8690 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-dju 9892 df-card 9930 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11447 df-neg 11448 df-nn 12238 df-2 12307 df-n0 12509 df-xnn0 12582 df-z 12596 df-uz 12867 df-fz 13540 df-hash 14372 df-edg 29407 df-upgr 29441 df-uspgr 29509 |
| This theorem is used by: uspgredg2v 29583 |
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