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| Mirrors > Home > ILE Home > Th. List > uhgr0v0e | Unicode version | ||
| Description: The null graph, with no vertices, has no edges. (Contributed by AV, 21-Oct-2020.) |
| Ref | Expression |
|---|---|
| uhgr0v0e.v |
|
| uhgr0v0e.e |
|
| Ref | Expression |
|---|---|
| uhgr0v0e |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uhgr0v0e.v |
. . . . . 6
| |
| 2 | 1 | eqeq1i 2238 |
. . . . 5
|
| 3 | uhgr0vb 15961 |
. . . . . . 7
| |
| 4 | 3 | biimpd 144 |
. . . . . 6
|
| 5 | 4 | ex 115 |
. . . . 5
|
| 6 | 2, 5 | biimtrid 152 |
. . . 4
|
| 7 | 6 | pm2.43a 51 |
. . 3
|
| 8 | 7 | imp 124 |
. 2
|
| 9 | uhgr0v0e.e |
. . . . 5
| |
| 10 | 9 | eqeq1i 2238 |
. . . 4
|
| 11 | uhgriedg0edg0 16012 |
. . . 4
| |
| 12 | 10, 11 | bitrid 192 |
. . 3
|
| 13 | 12 | adantr 276 |
. 2
|
| 14 | 8, 13 | mpbird 167 |
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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2203 ax-14 2204 ax-ext 2212 ax-sep 4206 ax-nul 4214 ax-pow 4263 ax-pr 4298 ax-un 4529 ax-setind 4634 ax-cnex 8125 ax-resscn 8126 ax-1cn 8127 ax-1re 8128 ax-icn 8129 ax-addcl 8130 ax-addrcl 8131 ax-mulcl 8132 ax-addcom 8134 ax-mulcom 8135 ax-addass 8136 ax-mulass 8137 ax-distr 8138 ax-i2m1 8139 ax-1rid 8141 ax-0id 8142 ax-rnegex 8143 ax-cnre 8145 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1810 df-eu 2081 df-mo 2082 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ne 2402 df-ral 2514 df-rex 2515 df-reu 2516 df-rab 2518 df-v 2803 df-sbc 3031 df-csb 3127 df-dif 3201 df-un 3203 df-in 3205 df-ss 3212 df-nul 3494 df-if 3605 df-pw 3653 df-sn 3674 df-pr 3675 df-op 3677 df-uni 3893 df-int 3928 df-br 4088 df-opab 4150 df-mpt 4151 df-id 4389 df-xp 4730 df-rel 4731 df-cnv 4732 df-co 4733 df-dm 4734 df-rn 4735 df-res 4736 df-iota 5285 df-fun 5327 df-fn 5328 df-f 5329 df-fo 5331 df-fv 5333 df-riota 5973 df-ov 6023 df-oprab 6024 df-mpo 6025 df-1st 6305 df-2nd 6306 df-sub 8354 df-inn 9146 df-2 9204 df-3 9205 df-4 9206 df-5 9207 df-6 9208 df-7 9209 df-8 9210 df-9 9211 df-n0 9405 df-dec 9614 df-ndx 13105 df-slot 13106 df-base 13108 df-edgf 15882 df-vtx 15891 df-iedg 15892 df-edg 15935 df-uhgrm 15946 |
| This theorem is referenced by: uhgr0vsize0en 16112 uhgr0vusgr 16115 |
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