Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > 1loopgrvd0 | Structured version Visualization version Unicode version |
Description: The vertex degree of a one-edge graph, case 1 (for a loop): a loop at a vertex other than the given vertex contributes nothing to the vertex degree. (Contributed by Mario Carneiro, 12-Mar-2015.) (Revised by AV, 21-Feb-2021.) |
Ref | Expression |
---|---|
1loopgruspgr.v | Vtx |
1loopgruspgr.a | |
1loopgruspgr.n | |
1loopgruspgr.i | iEdg |
1loopgrvd0.k |
Ref | Expression |
---|---|
1loopgrvd0 | VtxDeg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1loopgrvd0.k | . . . . 5 | |
2 | 1 | eldifbd 3587 | . . . 4 |
3 | 1loopgruspgr.a | . . . . . 6 | |
4 | snex 4908 | . . . . . 6 | |
5 | fvsng 6447 | . . . . . 6 | |
6 | 3, 4, 5 | sylancl 694 | . . . . 5 |
7 | 6 | eleq2d 2687 | . . . 4 |
8 | 2, 7 | mtbird 315 | . . 3 |
9 | 1loopgruspgr.i | . . . . . . 7 iEdg | |
10 | 9 | dmeqd 5326 | . . . . . 6 iEdg |
11 | dmsnopg 5606 | . . . . . . 7 | |
12 | 4, 11 | mp1i 13 | . . . . . 6 |
13 | 10, 12 | eqtrd 2656 | . . . . 5 iEdg |
14 | 9 | fveq1d 6193 | . . . . . 6 iEdg |
15 | 14 | eleq2d 2687 | . . . . 5 iEdg |
16 | 13, 15 | rexeqbidv 3153 | . . . 4 iEdg iEdg |
17 | fveq2 6191 | . . . . . . 7 | |
18 | 17 | eleq2d 2687 | . . . . . 6 |
19 | 18 | rexsng 4219 | . . . . 5 |
20 | 3, 19 | syl 17 | . . . 4 |
21 | 16, 20 | bitrd 268 | . . 3 iEdg iEdg |
22 | 8, 21 | mtbird 315 | . 2 iEdg iEdg |
23 | 1 | eldifad 3586 | . . . 4 |
24 | 1loopgruspgr.v | . . . . 5 Vtx | |
25 | 24 | eleq2d 2687 | . . . 4 Vtx |
26 | 23, 25 | mpbird 247 | . . 3 Vtx |
27 | eqid 2622 | . . . 4 Vtx Vtx | |
28 | eqid 2622 | . . . 4 iEdg iEdg | |
29 | eqid 2622 | . . . 4 VtxDeg VtxDeg | |
30 | 27, 28, 29 | vtxd0nedgb 26384 | . . 3 Vtx VtxDeg iEdg iEdg |
31 | 26, 30 | syl 17 | . 2 VtxDeg iEdg iEdg |
32 | 22, 31 | mpbird 247 | 1 VtxDeg |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wceq 1483 wcel 1990 wrex 2913 cvv 3200 cdif 3571 csn 4177 cop 4183 cdm 5114 cfv 5888 cc0 9936 Vtxcvtx 25874 iEdgciedg 25875 VtxDegcvtxdg 26361 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 ax-cnex 9992 ax-resscn 9993 ax-1cn 9994 ax-icn 9995 ax-addcl 9996 ax-addrcl 9997 ax-mulcl 9998 ax-mulrcl 9999 ax-mulcom 10000 ax-addass 10001 ax-mulass 10002 ax-distr 10003 ax-i2m1 10004 ax-1ne0 10005 ax-1rid 10006 ax-rnegex 10007 ax-rrecex 10008 ax-cnre 10009 ax-pre-lttri 10010 ax-pre-lttrn 10011 ax-pre-ltadd 10012 ax-pre-mulgt0 10013 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-nel 2898 df-ral 2917 df-rex 2918 df-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-pred 5680 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-riota 6611 df-ov 6653 df-oprab 6654 df-mpt2 6655 df-om 7066 df-1st 7168 df-2nd 7169 df-wrecs 7407 df-recs 7468 df-rdg 7506 df-1o 7560 df-er 7742 df-en 7956 df-dom 7957 df-sdom 7958 df-fin 7959 df-card 8765 df-pnf 10076 df-mnf 10077 df-xr 10078 df-ltxr 10079 df-le 10080 df-sub 10268 df-neg 10269 df-nn 11021 df-n0 11293 df-xnn0 11364 df-z 11378 df-uz 11688 df-xadd 11947 df-fz 12327 df-hash 13118 df-vtxdg 26362 |
This theorem is referenced by: 1egrvtxdg0 26407 eupth2lem3lem3 27090 |
Copyright terms: Public domain | W3C validator |