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Mirrors > Home > MPE Home > Th. List > vtxdushgrfvedglem | Structured version Visualization version GIF version |
Description: Lemma for vtxdushgrfvedg 27266 and vtxdusgrfvedg 27267. (Contributed by AV, 12-Dec-2020.) (Proof shortened by AV, 5-May-2021.) |
Ref | Expression |
---|---|
vtxdushgrfvedg.v | ⊢ 𝑉 = (Vtx‘𝐺) |
vtxdushgrfvedg.e | ⊢ 𝐸 = (Edg‘𝐺) |
Ref | Expression |
---|---|
vtxdushgrfvedglem | ⊢ ((𝐺 ∈ USHGraph ∧ 𝑈 ∈ 𝑉) → (♯‘{𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)}) = (♯‘{𝑒 ∈ 𝐸 ∣ 𝑈 ∈ 𝑒})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fvex 6678 | . . . . 5 ⊢ (iEdg‘𝐺) ∈ V | |
2 | 1 | dmex 7610 | . . . 4 ⊢ dom (iEdg‘𝐺) ∈ V |
3 | 2 | rabex 5228 | . . 3 ⊢ {𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)} ∈ V |
4 | 3 | a1i 11 | . 2 ⊢ ((𝐺 ∈ USHGraph ∧ 𝑈 ∈ 𝑉) → {𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)} ∈ V) |
5 | vtxdushgrfvedg.e | . . 3 ⊢ 𝐸 = (Edg‘𝐺) | |
6 | eqid 2821 | . . 3 ⊢ (iEdg‘𝐺) = (iEdg‘𝐺) | |
7 | vtxdushgrfvedg.v | . . 3 ⊢ 𝑉 = (Vtx‘𝐺) | |
8 | eqid 2821 | . . 3 ⊢ {𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)} = {𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)} | |
9 | eleq2w 2896 | . . . 4 ⊢ (𝑒 = 𝑐 → (𝑈 ∈ 𝑒 ↔ 𝑈 ∈ 𝑐)) | |
10 | 9 | cbvrabv 3492 | . . 3 ⊢ {𝑒 ∈ 𝐸 ∣ 𝑈 ∈ 𝑒} = {𝑐 ∈ 𝐸 ∣ 𝑈 ∈ 𝑐} |
11 | eqid 2821 | . . 3 ⊢ (𝑥 ∈ {𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)} ↦ ((iEdg‘𝐺)‘𝑥)) = (𝑥 ∈ {𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)} ↦ ((iEdg‘𝐺)‘𝑥)) | |
12 | 5, 6, 7, 8, 10, 11 | ushgredgedg 27005 | . 2 ⊢ ((𝐺 ∈ USHGraph ∧ 𝑈 ∈ 𝑉) → (𝑥 ∈ {𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)} ↦ ((iEdg‘𝐺)‘𝑥)):{𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)}–1-1-onto→{𝑒 ∈ 𝐸 ∣ 𝑈 ∈ 𝑒}) |
13 | 4, 12 | hasheqf1od 13708 | 1 ⊢ ((𝐺 ∈ USHGraph ∧ 𝑈 ∈ 𝑉) → (♯‘{𝑖 ∈ dom (iEdg‘𝐺) ∣ 𝑈 ∈ ((iEdg‘𝐺)‘𝑖)}) = (♯‘{𝑒 ∈ 𝐸 ∣ 𝑈 ∈ 𝑒})) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1533 ∈ wcel 2110 {crab 3142 Vcvv 3495 ↦ cmpt 5139 dom cdm 5550 ‘cfv 6350 ♯chash 13684 Vtxcvtx 26775 iEdgciedg 26776 Edgcedg 26826 USHGraphcushgr 26836 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-rep 5183 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5322 ax-un 7455 ax-cnex 10587 ax-resscn 10588 ax-1cn 10589 ax-icn 10590 ax-addcl 10591 ax-addrcl 10592 ax-mulcl 10593 ax-mulrcl 10594 ax-mulcom 10595 ax-addass 10596 ax-mulass 10597 ax-distr 10598 ax-i2m1 10599 ax-1ne0 10600 ax-1rid 10601 ax-rnegex 10602 ax-rrecex 10603 ax-cnre 10604 ax-pre-lttri 10605 ax-pre-lttrn 10606 ax-pre-ltadd 10607 ax-pre-mulgt0 10608 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3497 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4833 df-int 4870 df-iun 4914 df-br 5060 df-opab 5122 df-mpt 5140 df-tr 5166 df-id 5455 df-eprel 5460 df-po 5469 df-so 5470 df-fr 5509 df-we 5511 df-xp 5556 df-rel 5557 df-cnv 5558 df-co 5559 df-dm 5560 df-rn 5561 df-res 5562 df-ima 5563 df-pred 6143 df-ord 6189 df-on 6190 df-lim 6191 df-suc 6192 df-iota 6309 df-fun 6352 df-fn 6353 df-f 6354 df-f1 6355 df-fo 6356 df-f1o 6357 df-fv 6358 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-om 7575 df-wrecs 7941 df-recs 8002 df-rdg 8040 df-1o 8096 df-er 8283 df-en 8504 df-dom 8505 df-sdom 8506 df-fin 8507 df-card 9362 df-pnf 10671 df-mnf 10672 df-xr 10673 df-ltxr 10674 df-le 10675 df-sub 10866 df-neg 10867 df-nn 11633 df-n0 11892 df-z 11976 df-uz 12238 df-hash 13685 df-edg 26827 df-uhgr 26837 df-ushgr 26838 |
This theorem is referenced by: vtxdushgrfvedg 27266 vtxdusgrfvedg 27267 |
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