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| Mirrors > Home > ILE Home > Th. List > uhgrfun | GIF version | ||
| Description: The edge function of an undirected hypergraph is a function. (Contributed by Alexander van der Vekens, 26-Dec-2017.) (Revised by AV, 15-Dec-2020.) |
| Ref | Expression |
|---|---|
| uhgrfun.e | ⊢ 𝐸 = (iEdg‘𝐺) |
| Ref | Expression |
|---|---|
| uhgrfun | ⊢ (𝐺 ∈ UHGraph → Fun 𝐸) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2238 | . . 3 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
| 2 | uhgrfun.e | . . 3 ⊢ 𝐸 = (iEdg‘𝐺) | |
| 3 | 1, 2 | uhgrfm 16326 | . 2 ⊢ (𝐺 ∈ UHGraph → 𝐸:dom 𝐸⟶{𝑠 ∈ 𝒫 (Vtx‘𝐺) ∣ ∃𝑗 𝑗 ∈ 𝑠}) |
| 4 | 3 | ffund 5537 | 1 ⊢ (𝐺 ∈ UHGraph → Fun 𝐸) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∃wex 1545 ∈ wcel 2209 {crab 2532 𝒫 cpw 3688 dom cdm 4774 Fun wfun 5371 ‘cfv 5377 Vtxcvtx 16265 iEdgciedg 16266 UHGraphcuhgr 16320 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-addcom 8279 ax-mulcom 8280 ax-addass 8281 ax-mulass 8282 ax-distr 8283 ax-i2m1 8284 ax-1rid 8286 ax-0id 8287 ax-rnegex 8288 ax-cnre 8290 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-fo 5383 df-fv 5385 df-riota 6038 df-ov 6088 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-sub 8499 df-inn 9306 df-2 9364 df-3 9365 df-4 9366 df-5 9367 df-6 9368 df-7 9369 df-8 9370 df-9 9371 df-n0 9566 df-dec 9780 df-ndx 13357 df-slot 13358 df-base 13360 df-edgf 16258 df-vtx 16267 df-iedg 16268 df-uhgrm 16322 |
| This theorem is used by: lpvtx 16332 umgrnloopv 16367 uhgredgiedgb 16387 uhgriedg0edg0 16388 uhgrvtxedgiedgb 16396 uhgr2edg 16459 ushgredgedg 16479 ushgredgedgloop 16481 0uhgrsubgr 16518 uhgrsubgrself 16519 subgruhgrfun 16521 subgruhgredgdm 16523 subumgredg2en 16524 subupgr 16526 uhgrspansubgrlem 16529 uhgrspansubgr 16530 upgredginwlk 16609 eulerpathprum 16733 |
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