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Mirrors > Home > MPE Home > Th. List > upgrres1lem3 | Structured version Visualization version GIF version |
Description: Lemma 3 for upgrres1 27095. (Contributed by AV, 7-Nov-2020.) |
Ref | Expression |
---|---|
upgrres1.v | ⊢ 𝑉 = (Vtx‘𝐺) |
upgrres1.e | ⊢ 𝐸 = (Edg‘𝐺) |
upgrres1.f | ⊢ 𝐹 = {𝑒 ∈ 𝐸 ∣ 𝑁 ∉ 𝑒} |
upgrres1.s | ⊢ 𝑆 = 〈(𝑉 ∖ {𝑁}), ( I ↾ 𝐹)〉 |
Ref | Expression |
---|---|
upgrres1lem3 | ⊢ (iEdg‘𝑆) = ( I ↾ 𝐹) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | upgrres1.s | . . 3 ⊢ 𝑆 = 〈(𝑉 ∖ {𝑁}), ( I ↾ 𝐹)〉 | |
2 | 1 | fveq2i 6673 | . 2 ⊢ (iEdg‘𝑆) = (iEdg‘〈(𝑉 ∖ {𝑁}), ( I ↾ 𝐹)〉) |
3 | upgrres1.v | . . . 4 ⊢ 𝑉 = (Vtx‘𝐺) | |
4 | upgrres1.e | . . . 4 ⊢ 𝐸 = (Edg‘𝐺) | |
5 | upgrres1.f | . . . 4 ⊢ 𝐹 = {𝑒 ∈ 𝐸 ∣ 𝑁 ∉ 𝑒} | |
6 | 3, 4, 5 | upgrres1lem1 27091 | . . 3 ⊢ ((𝑉 ∖ {𝑁}) ∈ V ∧ ( I ↾ 𝐹) ∈ V) |
7 | opiedgfv 26792 | . . 3 ⊢ (((𝑉 ∖ {𝑁}) ∈ V ∧ ( I ↾ 𝐹) ∈ V) → (iEdg‘〈(𝑉 ∖ {𝑁}), ( I ↾ 𝐹)〉) = ( I ↾ 𝐹)) | |
8 | 6, 7 | ax-mp 5 | . 2 ⊢ (iEdg‘〈(𝑉 ∖ {𝑁}), ( I ↾ 𝐹)〉) = ( I ↾ 𝐹) |
9 | 2, 8 | eqtri 2844 | 1 ⊢ (iEdg‘𝑆) = ( I ↾ 𝐹) |
Colors of variables: wff setvar class |
Syntax hints: ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∉ wnel 3123 {crab 3142 Vcvv 3494 ∖ cdif 3933 {csn 4567 〈cop 4573 I cid 5459 ↾ cres 5557 ‘cfv 6355 Vtxcvtx 26781 iEdgciedg 26782 Edgcedg 26832 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-iota 6314 df-fun 6357 df-fv 6363 df-2nd 7690 df-iedg 26784 |
This theorem is referenced by: upgrres1 27095 umgrres1 27096 usgrres1 27097 nbupgrres 27146 |
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