Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > loopclwwlkn1b | Structured version Visualization version GIF version |
Description: The singleton word consisting of a vertex 𝑉 represents a closed walk of length 1 iff there is a loop at vertex 𝑉. (Contributed by AV, 11-Feb-2022.) |
Ref | Expression |
---|---|
loopclwwlkn1b | ⊢ (𝑉 ∈ (Vtx‘𝐺) → ({𝑉} ∈ (Edg‘𝐺) ↔ 〈“𝑉”〉 ∈ (1 ClWWalksN 𝐺))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clwwlkn1 27978 | . 2 ⊢ (〈“𝑉”〉 ∈ (1 ClWWalksN 𝐺) ↔ ((♯‘〈“𝑉”〉) = 1 ∧ 〈“𝑉”〉 ∈ Word (Vtx‘𝐺) ∧ {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺))) | |
2 | s1fv 14053 | . . . . . . . 8 ⊢ (𝑉 ∈ (Vtx‘𝐺) → (〈“𝑉”〉‘0) = 𝑉) | |
3 | 2 | sneqd 4528 | . . . . . . 7 ⊢ (𝑉 ∈ (Vtx‘𝐺) → {(〈“𝑉”〉‘0)} = {𝑉}) |
4 | 3 | eleq1d 2817 | . . . . . 6 ⊢ (𝑉 ∈ (Vtx‘𝐺) → ({(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺) ↔ {𝑉} ∈ (Edg‘𝐺))) |
5 | 4 | biimpcd 252 | . . . . 5 ⊢ ({(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺) → (𝑉 ∈ (Vtx‘𝐺) → {𝑉} ∈ (Edg‘𝐺))) |
6 | 5 | 3ad2ant3 1136 | . . . 4 ⊢ (((♯‘〈“𝑉”〉) = 1 ∧ 〈“𝑉”〉 ∈ Word (Vtx‘𝐺) ∧ {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺)) → (𝑉 ∈ (Vtx‘𝐺) → {𝑉} ∈ (Edg‘𝐺))) |
7 | 6 | com12 32 | . . 3 ⊢ (𝑉 ∈ (Vtx‘𝐺) → (((♯‘〈“𝑉”〉) = 1 ∧ 〈“𝑉”〉 ∈ Word (Vtx‘𝐺) ∧ {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺)) → {𝑉} ∈ (Edg‘𝐺))) |
8 | s1len 14049 | . . . . . 6 ⊢ (♯‘〈“𝑉”〉) = 1 | |
9 | 8 | a1i 11 | . . . . 5 ⊢ ((𝑉 ∈ (Vtx‘𝐺) ∧ {𝑉} ∈ (Edg‘𝐺)) → (♯‘〈“𝑉”〉) = 1) |
10 | s1cl 14045 | . . . . . 6 ⊢ (𝑉 ∈ (Vtx‘𝐺) → 〈“𝑉”〉 ∈ Word (Vtx‘𝐺)) | |
11 | 10 | adantr 484 | . . . . 5 ⊢ ((𝑉 ∈ (Vtx‘𝐺) ∧ {𝑉} ∈ (Edg‘𝐺)) → 〈“𝑉”〉 ∈ Word (Vtx‘𝐺)) |
12 | 2 | eqcomd 2744 | . . . . . . . 8 ⊢ (𝑉 ∈ (Vtx‘𝐺) → 𝑉 = (〈“𝑉”〉‘0)) |
13 | 12 | sneqd 4528 | . . . . . . 7 ⊢ (𝑉 ∈ (Vtx‘𝐺) → {𝑉} = {(〈“𝑉”〉‘0)}) |
14 | 13 | eleq1d 2817 | . . . . . 6 ⊢ (𝑉 ∈ (Vtx‘𝐺) → ({𝑉} ∈ (Edg‘𝐺) ↔ {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺))) |
15 | 14 | biimpa 480 | . . . . 5 ⊢ ((𝑉 ∈ (Vtx‘𝐺) ∧ {𝑉} ∈ (Edg‘𝐺)) → {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺)) |
16 | 9, 11, 15 | 3jca 1129 | . . . 4 ⊢ ((𝑉 ∈ (Vtx‘𝐺) ∧ {𝑉} ∈ (Edg‘𝐺)) → ((♯‘〈“𝑉”〉) = 1 ∧ 〈“𝑉”〉 ∈ Word (Vtx‘𝐺) ∧ {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺))) |
17 | 16 | ex 416 | . . 3 ⊢ (𝑉 ∈ (Vtx‘𝐺) → ({𝑉} ∈ (Edg‘𝐺) → ((♯‘〈“𝑉”〉) = 1 ∧ 〈“𝑉”〉 ∈ Word (Vtx‘𝐺) ∧ {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺)))) |
18 | 7, 17 | impbid 215 | . 2 ⊢ (𝑉 ∈ (Vtx‘𝐺) → (((♯‘〈“𝑉”〉) = 1 ∧ 〈“𝑉”〉 ∈ Word (Vtx‘𝐺) ∧ {(〈“𝑉”〉‘0)} ∈ (Edg‘𝐺)) ↔ {𝑉} ∈ (Edg‘𝐺))) |
19 | 1, 18 | syl5rbb 287 | 1 ⊢ (𝑉 ∈ (Vtx‘𝐺) → ({𝑉} ∈ (Edg‘𝐺) ↔ 〈“𝑉”〉 ∈ (1 ClWWalksN 𝐺))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1088 = wceq 1542 ∈ wcel 2114 {csn 4516 ‘cfv 6339 (class class class)co 7170 0cc0 10615 1c1 10616 ♯chash 13782 Word cword 13955 〈“cs1 14038 Vtxcvtx 26941 Edgcedg 26992 ClWWalksN cclwwlkn 27961 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2710 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5232 ax-pr 5296 ax-un 7479 ax-cnex 10671 ax-resscn 10672 ax-1cn 10673 ax-icn 10674 ax-addcl 10675 ax-addrcl 10676 ax-mulcl 10677 ax-mulrcl 10678 ax-mulcom 10679 ax-addass 10680 ax-mulass 10681 ax-distr 10682 ax-i2m1 10683 ax-1ne0 10684 ax-1rid 10685 ax-rnegex 10686 ax-rrecex 10687 ax-cnre 10688 ax-pre-lttri 10689 ax-pre-lttrn 10690 ax-pre-ltadd 10691 ax-pre-mulgt0 10692 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2540 df-eu 2570 df-clab 2717 df-cleq 2730 df-clel 2811 df-nfc 2881 df-ne 2935 df-nel 3039 df-ral 3058 df-rex 3059 df-reu 3060 df-rab 3062 df-v 3400 df-sbc 3681 df-csb 3791 df-dif 3846 df-un 3848 df-in 3850 df-ss 3860 df-pss 3862 df-nul 4212 df-if 4415 df-pw 4490 df-sn 4517 df-pr 4519 df-tp 4521 df-op 4523 df-uni 4797 df-int 4837 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5429 df-eprel 5434 df-po 5442 df-so 5443 df-fr 5483 df-we 5485 df-xp 5531 df-rel 5532 df-cnv 5533 df-co 5534 df-dm 5535 df-rn 5536 df-res 5537 df-ima 5538 df-pred 6129 df-ord 6175 df-on 6176 df-lim 6177 df-suc 6178 df-iota 6297 df-fun 6341 df-fn 6342 df-f 6343 df-f1 6344 df-fo 6345 df-f1o 6346 df-fv 6347 df-riota 7127 df-ov 7173 df-oprab 7174 df-mpo 7175 df-om 7600 df-1st 7714 df-2nd 7715 df-wrecs 7976 df-recs 8037 df-rdg 8075 df-1o 8131 df-er 8320 df-map 8439 df-en 8556 df-dom 8557 df-sdom 8558 df-fin 8559 df-card 9441 df-pnf 10755 df-mnf 10756 df-xr 10757 df-ltxr 10758 df-le 10759 df-sub 10950 df-neg 10951 df-nn 11717 df-n0 11977 df-xnn0 12049 df-z 12063 df-uz 12325 df-fz 12982 df-fzo 13125 df-hash 13783 df-word 13956 df-lsw 14004 df-s1 14039 df-clwwlk 27919 df-clwwlkn 27962 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |