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| Description: Lemma for usgrexmpl 29281. (Contributed by AV, 21-Oct-2020.) | 
| Ref | Expression | 
|---|---|
| usgrexmpl.v | ⊢ 𝑉 = (0...4) | 
| usgrexmpl.e | ⊢ 𝐸 = 〈“{0, 1} {1, 2} {2, 0} {0, 3}”〉 | 
| usgrexmpl.g | ⊢ 𝐺 = 〈𝑉, 𝐸〉 | 
| Ref | Expression | 
|---|---|
| usgrexmpllem | ⊢ ((Vtx‘𝐺) = 𝑉 ∧ (iEdg‘𝐺) = 𝐸) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | usgrexmpl.v | . . . 4 ⊢ 𝑉 = (0...4) | |
| 2 | 1 | ovexi 7466 | . . 3 ⊢ 𝑉 ∈ V | 
| 3 | usgrexmpl.e | . . . 4 ⊢ 𝐸 = 〈“{0, 1} {1, 2} {2, 0} {0, 3}”〉 | |
| 4 | s4cli 14922 | . . . . 5 ⊢ 〈“{0, 1} {1, 2} {2, 0} {0, 3}”〉 ∈ Word V | |
| 5 | 4 | elexi 3502 | . . . 4 ⊢ 〈“{0, 1} {1, 2} {2, 0} {0, 3}”〉 ∈ V | 
| 6 | 3, 5 | eqeltri 2836 | . . 3 ⊢ 𝐸 ∈ V | 
| 7 | opvtxfv 29022 | . . . 4 ⊢ ((𝑉 ∈ V ∧ 𝐸 ∈ V) → (Vtx‘〈𝑉, 𝐸〉) = 𝑉) | |
| 8 | opiedgfv 29025 | . . . 4 ⊢ ((𝑉 ∈ V ∧ 𝐸 ∈ V) → (iEdg‘〈𝑉, 𝐸〉) = 𝐸) | |
| 9 | 7, 8 | jca 511 | . . 3 ⊢ ((𝑉 ∈ V ∧ 𝐸 ∈ V) → ((Vtx‘〈𝑉, 𝐸〉) = 𝑉 ∧ (iEdg‘〈𝑉, 𝐸〉) = 𝐸)) | 
| 10 | 2, 6, 9 | mp2an 692 | . 2 ⊢ ((Vtx‘〈𝑉, 𝐸〉) = 𝑉 ∧ (iEdg‘〈𝑉, 𝐸〉) = 𝐸) | 
| 11 | usgrexmpl.g | . . . . 5 ⊢ 𝐺 = 〈𝑉, 𝐸〉 | |
| 12 | 11 | fveq2i 6908 | . . . 4 ⊢ (Vtx‘𝐺) = (Vtx‘〈𝑉, 𝐸〉) | 
| 13 | 12 | eqeq1i 2741 | . . 3 ⊢ ((Vtx‘𝐺) = 𝑉 ↔ (Vtx‘〈𝑉, 𝐸〉) = 𝑉) | 
| 14 | 11 | fveq2i 6908 | . . . 4 ⊢ (iEdg‘𝐺) = (iEdg‘〈𝑉, 𝐸〉) | 
| 15 | 14 | eqeq1i 2741 | . . 3 ⊢ ((iEdg‘𝐺) = 𝐸 ↔ (iEdg‘〈𝑉, 𝐸〉) = 𝐸) | 
| 16 | 13, 15 | anbi12i 628 | . 2 ⊢ (((Vtx‘𝐺) = 𝑉 ∧ (iEdg‘𝐺) = 𝐸) ↔ ((Vtx‘〈𝑉, 𝐸〉) = 𝑉 ∧ (iEdg‘〈𝑉, 𝐸〉) = 𝐸)) | 
| 17 | 10, 16 | mpbir 231 | 1 ⊢ ((Vtx‘𝐺) = 𝑉 ∧ (iEdg‘𝐺) = 𝐸) | 
| Colors of variables: wff setvar class | 
| Syntax hints: ∧ wa 395 = wceq 1539 ∈ wcel 2107 Vcvv 3479 {cpr 4627 〈cop 4631 ‘cfv 6560 (class class class)co 7432 0cc0 11156 1c1 11157 2c2 12322 3c3 12323 4c4 12324 ...cfz 13548 Word cword 14553 〈“cs4 14883 Vtxcvtx 29014 iEdgciedg 29015 | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2707 ax-rep 5278 ax-sep 5295 ax-nul 5305 ax-pow 5364 ax-pr 5431 ax-un 7756 ax-cnex 11212 ax-resscn 11213 ax-1cn 11214 ax-icn 11215 ax-addcl 11216 ax-addrcl 11217 ax-mulcl 11218 ax-mulrcl 11219 ax-mulcom 11220 ax-addass 11221 ax-mulass 11222 ax-distr 11223 ax-i2m1 11224 ax-1ne0 11225 ax-1rid 11226 ax-rnegex 11227 ax-rrecex 11228 ax-cnre 11229 ax-pre-lttri 11230 ax-pre-lttrn 11231 ax-pre-ltadd 11232 ax-pre-mulgt0 11233 | 
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3380 df-rab 3436 df-v 3481 df-sbc 3788 df-csb 3899 df-dif 3953 df-un 3955 df-in 3957 df-ss 3967 df-pss 3970 df-nul 4333 df-if 4525 df-pw 4601 df-sn 4626 df-pr 4628 df-op 4632 df-uni 4907 df-int 4946 df-iun 4992 df-br 5143 df-opab 5205 df-mpt 5225 df-tr 5259 df-id 5577 df-eprel 5583 df-po 5591 df-so 5592 df-fr 5636 df-we 5638 df-xp 5690 df-rel 5691 df-cnv 5692 df-co 5693 df-dm 5694 df-rn 5695 df-res 5696 df-ima 5697 df-pred 6320 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6513 df-fun 6562 df-fn 6563 df-f 6564 df-f1 6565 df-fo 6566 df-f1o 6567 df-fv 6568 df-riota 7389 df-ov 7435 df-oprab 7436 df-mpo 7437 df-om 7889 df-1st 8015 df-2nd 8016 df-frecs 8307 df-wrecs 8338 df-recs 8412 df-rdg 8451 df-1o 8507 df-er 8746 df-en 8987 df-dom 8988 df-sdom 8989 df-fin 8990 df-card 9980 df-pnf 11298 df-mnf 11299 df-xr 11300 df-ltxr 11301 df-le 11302 df-sub 11495 df-neg 11496 df-nn 12268 df-n0 12529 df-z 12616 df-uz 12880 df-fz 13549 df-fzo 13696 df-hash 14371 df-word 14554 df-concat 14610 df-s1 14635 df-s2 14888 df-s3 14889 df-s4 14890 df-vtx 29016 df-iedg 29017 | 
| This theorem is referenced by: usgrexmplvtx 29279 usgrexmpledg 29280 | 
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