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| Mirrors > Home > ILE Home > Th. List > konigsbergssiedgwen | GIF version | ||
| Description: Each subset of the indexed edges of the Königsberg graph 𝐺 is a word over the pairs of vertices. (Contributed by AV, 28-Feb-2021.) |
| Ref | Expression |
|---|---|
| konigsberg.v | ⊢ 𝑉 = (0...3) |
| konigsberg.e | ⊢ 𝐸 = 〈“{0, 1} {0, 2} {0, 3} {1, 2} {1, 2} {2, 3} {2, 3}”〉 |
| konigsberg.g | ⊢ 𝐺 = 〈𝑉, 𝐸〉 |
| Ref | Expression |
|---|---|
| konigsbergssiedgwen | ⊢ ((𝐴 ∈ Word V ∧ 𝐵 ∈ Word V ∧ 𝐸 = (𝐴 ++ 𝐵)) → 𝐴 ∈ Word {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | konigsberg.v | . . . 4 ⊢ 𝑉 = (0...3) | |
| 2 | konigsberg.e | . . . 4 ⊢ 𝐸 = 〈“{0, 1} {0, 2} {0, 3} {1, 2} {1, 2} {2, 3} {2, 3}”〉 | |
| 3 | konigsberg.g | . . . 4 ⊢ 𝐺 = 〈𝑉, 𝐸〉 | |
| 4 | 1, 2, 3 | konigsbergssiedgwpren 16931 | . . 3 ⊢ ((𝐴 ∈ Word V ∧ 𝐵 ∈ Word V ∧ 𝐸 = (𝐴 ++ 𝐵)) → 𝐴 ∈ Word {𝑥 ∈ 𝒫 𝑉 ∣ 𝑥 ≈ 2o}) |
| 5 | wrdf 11332 | . . 3 ⊢ (𝐴 ∈ Word {𝑥 ∈ 𝒫 𝑉 ∣ 𝑥 ≈ 2o} → 𝐴:(0..^(♯‘𝐴))⟶{𝑥 ∈ 𝒫 𝑉 ∣ 𝑥 ≈ 2o}) | |
| 6 | olc 723 | . . . . . 6 ⊢ (𝑥 ≈ 2o → (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)) | |
| 7 | 6 | a1i 9 | . . . . 5 ⊢ (𝑥 ∈ 𝒫 𝑉 → (𝑥 ≈ 2o → (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o))) |
| 8 | 7 | ss2rabi 3330 | . . . 4 ⊢ {𝑥 ∈ 𝒫 𝑉 ∣ 𝑥 ≈ 2o} ⊆ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)} |
| 9 | fss 5549 | . . . 4 ⊢ ((𝐴:(0..^(♯‘𝐴))⟶{𝑥 ∈ 𝒫 𝑉 ∣ 𝑥 ≈ 2o} ∧ {𝑥 ∈ 𝒫 𝑉 ∣ 𝑥 ≈ 2o} ⊆ {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) → 𝐴:(0..^(♯‘𝐴))⟶{𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) | |
| 10 | 8, 9 | mpan2 429 | . . 3 ⊢ (𝐴:(0..^(♯‘𝐴))⟶{𝑥 ∈ 𝒫 𝑉 ∣ 𝑥 ≈ 2o} → 𝐴:(0..^(♯‘𝐴))⟶{𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 11 | 4, 5, 10 | 3syl 17 | . 2 ⊢ ((𝐴 ∈ Word V ∧ 𝐵 ∈ Word V ∧ 𝐸 = (𝐴 ++ 𝐵)) → 𝐴:(0..^(♯‘𝐴))⟶{𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| 12 | lencl 11330 | . . 3 ⊢ (𝐴 ∈ Word V → (♯‘𝐴) ∈ ℕ0) | |
| 13 | 12 | 3ad2ant1 1049 | . 2 ⊢ ((𝐴 ∈ Word V ∧ 𝐵 ∈ Word V ∧ 𝐸 = (𝐴 ++ 𝐵)) → (♯‘𝐴) ∈ ℕ0) |
| 14 | iswrdinn0 11331 | . 2 ⊢ ((𝐴:(0..^(♯‘𝐴))⟶{𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)} ∧ (♯‘𝐴) ∈ ℕ0) → 𝐴 ∈ Word {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) | |
| 15 | 11, 13, 14 | syl2anc 415 | 1 ⊢ ((𝐴 ∈ Word V ∧ 𝐵 ∈ Word V ∧ 𝐸 = (𝐴 ++ 𝐵)) → 𝐴 ∈ Word {𝑥 ∈ 𝒫 𝑉 ∣ (𝑥 ≈ 1o ∨ 𝑥 ≈ 2o)}) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∨ wo 720 ∧ w3a 1009 = wceq 1402 ∈ wcel 2209 {crab 2532 Vcvv 2821 ⊆ wss 3220 𝒫 cpw 3688 {cpr 3710 〈cop 3712 class class class wbr 4131 ⟶wf 5376 ‘cfv 5380 (class class class)co 6088 1oc1o 6684 2oc2o 6685 ≈ cen 7024 0cc0 8185 1c1 8186 2c2 9364 3c3 9365 ℕ0cn0 9574 ...cfz 10428 ..^cfzo 10566 ♯chash 11236 Word cword 11326 ++ cconcat 11380 〈“cs7 11548 |
| 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-coll 4248 ax-sep 4251 ax-nul 4261 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-iinf 4737 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-addass 8287 ax-distr 8289 ax-i2m1 8290 ax-0lt1 8291 ax-0id 8293 ax-rnegex 8294 ax-cnre 8296 ax-pre-ltirr 8297 ax-pre-ltwlin 8298 ax-pre-lttrn 8299 ax-pre-apti 8300 ax-pre-ltadd 8301 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 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-nel 2516 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-nul 3521 df-if 3639 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-tr 4232 df-id 4440 df-iord 4513 df-on 4515 df-ilim 4516 df-suc 4518 df-iom 4740 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-riota 6041 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-recs 6580 df-frec 6666 df-1o 6691 df-2o 6692 df-er 6811 df-en 7027 df-dom 7028 df-fin 7029 df-pnf 8368 df-mnf 8369 df-xr 8370 df-ltxr 8371 df-le 8372 df-sub 8506 df-neg 8507 df-inn 9314 df-2 9372 df-3 9373 df-n0 9575 df-z 9656 df-uz 9938 df-fz 10429 df-fzo 10567 df-ihash 11237 df-word 11327 df-concat 11381 df-s1 11406 df-s2 11550 df-s3 11551 df-s4 11552 df-s5 11553 df-s6 11554 df-s7 11555 |
| This theorem is used by: konigsberglem1 16934 konigsberglem2 16935 konigsberglem3 16936 |
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