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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 2231 | . . 3 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺) | |
| 2 | uhgrfun.e | . . 3 ⊢ 𝐸 = (iEdg‘𝐺) | |
| 3 | 1, 2 | uhgrfm 15927 | . 2 ⊢ (𝐺 ∈ UHGraph → 𝐸:dom 𝐸⟶{𝑠 ∈ 𝒫 (Vtx‘𝐺) ∣ ∃𝑗 𝑗 ∈ 𝑠}) |
| 4 | 3 | ffund 5486 | 1 ⊢ (𝐺 ∈ UHGraph → Fun 𝐸) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ∃wex 1540 ∈ wcel 2202 {crab 2514 𝒫 cpw 3652 dom cdm 4725 Fun wfun 5320 ‘cfv 5326 Vtxcvtx 15866 iEdgciedg 15867 UHGraphcuhgr 15921 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8123 ax-resscn 8124 ax-1cn 8125 ax-1re 8126 ax-icn 8127 ax-addcl 8128 ax-addrcl 8129 ax-mulcl 8130 ax-addcom 8132 ax-mulcom 8133 ax-addass 8134 ax-mulass 8135 ax-distr 8136 ax-i2m1 8137 ax-1rid 8139 ax-0id 8140 ax-rnegex 8141 ax-cnre 8143 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-if 3606 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-fo 5332 df-fv 5334 df-riota 5971 df-ov 6021 df-oprab 6022 df-mpo 6023 df-1st 6303 df-2nd 6304 df-sub 8352 df-inn 9144 df-2 9202 df-3 9203 df-4 9204 df-5 9205 df-6 9206 df-7 9207 df-8 9208 df-9 9209 df-n0 9403 df-dec 9612 df-ndx 13087 df-slot 13088 df-base 13090 df-edgf 15859 df-vtx 15868 df-iedg 15869 df-uhgrm 15923 |
| This theorem is referenced by: lpvtx 15933 umgrnloopv 15968 uhgredgiedgb 15988 uhgriedg0edg0 15989 uhgrvtxedgiedgb 15997 uhgr2edg 16060 ushgredgedg 16080 ushgredgedgloop 16082 0uhgrsubgr 16119 uhgrsubgrself 16120 subgruhgrfun 16122 subgruhgredgdm 16124 subumgredg2en 16125 subupgr 16127 uhgrspansubgrlem 16130 uhgrspansubgr 16131 upgredginwlk 16210 |
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