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| Mirrors > Home > ILE Home > Th. List > usgredgop | GIF version | ||
| Description: An edge of a simple graph as second component of an ordered pair. (Contributed by Alexander van der Vekens, 17-Aug-2017.) (Proof shortened by Alexander van der Vekens, 16-Dec-2017.) (Revised by AV, 15-Oct-2020.) |
| Ref | Expression |
|---|---|
| usgredgop | ⊢ ((𝐺 ∈ USGraph ∧ 𝐸 = (iEdg‘𝐺) ∧ 𝑋 ∈ dom 𝐸) → ((𝐸‘𝑋) = {𝑀, 𝑁} ↔ 〈𝑋, {𝑀, 𝑁}〉 ∈ 𝐸)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | usgrfun 16607 | . . . 4 ⊢ (𝐺 ∈ USGraph → Fun (iEdg‘𝐺)) | |
| 2 | funeq 5400 | . . . 4 ⊢ (𝐸 = (iEdg‘𝐺) → (Fun 𝐸 ↔ Fun (iEdg‘𝐺))) | |
| 3 | 1, 2 | syl5ibrcom 157 | . . 3 ⊢ (𝐺 ∈ USGraph → (𝐸 = (iEdg‘𝐺) → Fun 𝐸)) |
| 4 | 3 | imp 124 | . 2 ⊢ ((𝐺 ∈ USGraph ∧ 𝐸 = (iEdg‘𝐺)) → Fun 𝐸) |
| 5 | funopfvb 5747 | . 2 ⊢ ((Fun 𝐸 ∧ 𝑋 ∈ dom 𝐸) → ((𝐸‘𝑋) = {𝑀, 𝑁} ↔ 〈𝑋, {𝑀, 𝑁}〉 ∈ 𝐸)) | |
| 6 | 4, 5 | stoic3 1480 | 1 ⊢ ((𝐺 ∈ USGraph ∧ 𝐸 = (iEdg‘𝐺) ∧ 𝑋 ∈ dom 𝐸) → ((𝐸‘𝑋) = {𝑀, 𝑁} ↔ 〈𝑋, {𝑀, 𝑁}〉 ∈ 𝐸)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 105 ∧ w3a 1009 = wceq 1402 ∈ wcel 2209 {cpr 3710 〈cop 3712 dom cdm 4776 Fun wfun 5374 ‘cfv 5380 iEdgciedg 16459 USGraphcusgr 16600 |
| 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 8276 ax-resscn 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-addcom 8285 ax-mulcom 8286 ax-addass 8287 ax-mulass 8288 ax-distr 8289 ax-i2m1 8290 ax-1rid 8292 ax-0id 8293 ax-rnegex 8294 ax-cnre 8296 |
| 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-f1 5385 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 8506 df-inn 9314 df-2 9372 df-3 9373 df-4 9374 df-5 9375 df-6 9376 df-7 9377 df-8 9378 df-9 9379 df-n0 9575 df-dec 9789 df-ndx 13413 df-slot 13414 df-base 13416 df-edgf 16451 df-vtx 16460 df-iedg 16461 df-usgren 16602 |
| This theorem is used by: (None) |
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