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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 16531 | . 2 ⊢ (𝐺 ∈ UHGraph → 𝐸:dom 𝐸⟶{𝑠 ∈ 𝒫 (Vtx‘𝐺) ∣ ∃𝑗 𝑗 ∈ 𝑠}) |
| 4 | 3 | ffund 5540 | 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 4776 Fun wfun 5374 ‘cfv 5380 Vtxcvtx 16470 iEdgciedg 16471 UHGraphcuhgr 16525 |
| 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 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-mulcom 8287 ax-addass 8288 ax-mulass 8289 ax-distr 8290 ax-i2m1 8291 ax-1rid 8293 ax-0id 8294 ax-rnegex 8295 ax-cnre 8297 |
| 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 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-fo 5386 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-sub 8507 df-inn 9315 df-2 9373 df-3 9374 df-4 9375 df-5 9376 df-6 9377 df-7 9378 df-8 9379 df-9 9380 df-n0 9576 df-dec 9790 df-ndx 13414 df-slot 13415 df-base 13417 df-edgf 16463 df-vtx 16472 df-iedg 16473 df-uhgrm 16527 |
| This theorem is used by: lpvtx 16537 umgrnloopv 16572 uhgredgiedgb 16592 uhgriedg0edg0 16593 uhgrvtxedgiedgb 16601 uhgr2edg 16664 ushgredgedg 16684 ushgredgedgloop 16686 0uhgrsubgr 16723 uhgrsubgrself 16724 subgruhgrfun 16726 subgruhgredgdm 16728 subumgredg2en 16729 subupgr 16731 uhgrspansubgrlem 16734 uhgrspansubgr 16735 upgredginwlk 16814 eulerpathprum 16938 |
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