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| Mirrors > Home > ILE Home > Th. List > usgr1eop | Unicode version | ||
| Description: A simple graph with (at least) two different vertices and one edge. If the two vertices were not different, the edge would be a loop. (Contributed by Alexander van der Vekens, 10-Aug-2017.) (Revised by AV, 18-Oct-2020.) |
| Ref | Expression |
|---|---|
| usgr1eop |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2229 |
. . 3
| |
| 2 | simpllr 534 |
. . 3
| |
| 3 | simplrl 535 |
. . . 4
| |
| 4 | simpll 527 |
. . . . . 6
| |
| 5 | 4 | adantr 276 |
. . . . 5
|
| 6 | simplr 528 |
. . . . . . . 8
| |
| 7 | prexg 4296 |
. . . . . . . . 9
| |
| 8 | 7 | adantl 277 |
. . . . . . . 8
|
| 9 | opexg 4315 |
. . . . . . . 8
| |
| 10 | 6, 8, 9 | syl2anc 411 |
. . . . . . 7
|
| 11 | snexg 4269 |
. . . . . . 7
| |
| 12 | 10, 11 | syl 14 |
. . . . . 6
|
| 13 | 12 | adantr 276 |
. . . . 5
|
| 14 | opvtxfv 15844 |
. . . . 5
| |
| 15 | 5, 13, 14 | syl2anc 411 |
. . . 4
|
| 16 | 3, 15 | eleqtrrd 2309 |
. . 3
|
| 17 | simprr 531 |
. . . . 5
| |
| 18 | 4, 12, 14 | syl2anc 411 |
. . . . 5
|
| 19 | 17, 18 | eleqtrrd 2309 |
. . . 4
|
| 20 | 19 | adantr 276 |
. . 3
|
| 21 | opiedgfv 15847 |
. . . 4
| |
| 22 | 5, 13, 21 | syl2anc 411 |
. . 3
|
| 23 | simpr 110 |
. . 3
| |
| 24 | 1, 2, 16, 20, 22, 23 | usgr1e 16060 |
. 2
|
| 25 | 24 | ex 115 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-nul 4210 ax-pow 4259 ax-pr 4294 ax-un 4525 ax-setind 4630 ax-iinf 4681 ax-cnex 8106 ax-resscn 8107 ax-1cn 8108 ax-1re 8109 ax-icn 8110 ax-addcl 8111 ax-addrcl 8112 ax-mulcl 8113 ax-addcom 8115 ax-mulcom 8116 ax-addass 8117 ax-mulass 8118 ax-distr 8119 ax-i2m1 8120 ax-1rid 8122 ax-0id 8123 ax-rnegex 8124 ax-cnre 8126 |
| This theorem depends on definitions: df-bi 117 df-dc 840 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-nul 3492 df-if 3603 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-br 4084 df-opab 4146 df-mpt 4147 df-tr 4183 df-id 4385 df-iord 4458 df-on 4460 df-suc 4463 df-iom 4684 df-xp 4726 df-rel 4727 df-cnv 4728 df-co 4729 df-dm 4730 df-rn 4731 df-res 4732 df-ima 4733 df-iota 5281 df-fun 5323 df-fn 5324 df-f 5325 df-f1 5326 df-fo 5327 df-f1o 5328 df-fv 5329 df-riota 5963 df-ov 6013 df-oprab 6014 df-mpo 6015 df-1st 6295 df-2nd 6296 df-1o 6573 df-2o 6574 df-er 6693 df-en 6901 df-sub 8335 df-inn 9127 df-2 9185 df-3 9186 df-4 9187 df-5 9188 df-6 9189 df-7 9190 df-8 9191 df-9 9192 df-n0 9386 df-dec 9595 df-ndx 13056 df-slot 13057 df-base 13059 df-edgf 15827 df-vtx 15836 df-iedg 15837 df-edg 15880 df-uspgren 15974 df-usgren 15975 |
| This theorem is referenced by: usgr2v1e2w 16065 |
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