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Mirrors > Home > MPE Home > Th. List > spthispth | Structured version Visualization version GIF version |
Description: A simple path is a path (in an undirected graph). (Contributed by Alexander van der Vekens, 21-Oct-2017.) (Revised by AV, 9-Jan-2021.) (Proof shortened by AV, 30-Oct-2021.) |
Ref | Expression |
---|---|
spthispth | ⊢ (𝐹(SPaths‘𝐺)𝑃 → 𝐹(Paths‘𝐺)𝑃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl 485 | . . 3 ⊢ ((𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡𝑃) → 𝐹(Trails‘𝐺)𝑃) | |
2 | funres11 6426 | . . . 4 ⊢ (Fun ◡𝑃 → Fun ◡(𝑃 ↾ (1..^(♯‘𝐹)))) | |
3 | 2 | adantl 484 | . . 3 ⊢ ((𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡𝑃) → Fun ◡(𝑃 ↾ (1..^(♯‘𝐹)))) |
4 | 1e0p1 12134 | . . . . . . . . . 10 ⊢ 1 = (0 + 1) | |
5 | 4 | oveq1i 7160 | . . . . . . . . 9 ⊢ (1..^(♯‘𝐹)) = ((0 + 1)..^(♯‘𝐹)) |
6 | 5 | ineq2i 4186 | . . . . . . . 8 ⊢ ({0, (♯‘𝐹)} ∩ (1..^(♯‘𝐹))) = ({0, (♯‘𝐹)} ∩ ((0 + 1)..^(♯‘𝐹))) |
7 | 0z 11986 | . . . . . . . . 9 ⊢ 0 ∈ ℤ | |
8 | prinfzo0 13070 | . . . . . . . . 9 ⊢ (0 ∈ ℤ → ({0, (♯‘𝐹)} ∩ ((0 + 1)..^(♯‘𝐹))) = ∅) | |
9 | 7, 8 | ax-mp 5 | . . . . . . . 8 ⊢ ({0, (♯‘𝐹)} ∩ ((0 + 1)..^(♯‘𝐹))) = ∅ |
10 | 6, 9 | eqtri 2844 | . . . . . . 7 ⊢ ({0, (♯‘𝐹)} ∩ (1..^(♯‘𝐹))) = ∅ |
11 | 10 | imaeq2i 5922 | . . . . . 6 ⊢ (𝑃 “ ({0, (♯‘𝐹)} ∩ (1..^(♯‘𝐹)))) = (𝑃 “ ∅) |
12 | ima0 5940 | . . . . . 6 ⊢ (𝑃 “ ∅) = ∅ | |
13 | 11, 12 | eqtri 2844 | . . . . 5 ⊢ (𝑃 “ ({0, (♯‘𝐹)} ∩ (1..^(♯‘𝐹)))) = ∅ |
14 | imain 6434 | . . . . 5 ⊢ (Fun ◡𝑃 → (𝑃 “ ({0, (♯‘𝐹)} ∩ (1..^(♯‘𝐹)))) = ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹))))) | |
15 | 13, 14 | syl5reqr 2871 | . . . 4 ⊢ (Fun ◡𝑃 → ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅) |
16 | 15 | adantl 484 | . . 3 ⊢ ((𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡𝑃) → ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅) |
17 | 1, 3, 16 | 3jca 1124 | . 2 ⊢ ((𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡𝑃) → (𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡(𝑃 ↾ (1..^(♯‘𝐹))) ∧ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅)) |
18 | isspth 27499 | . 2 ⊢ (𝐹(SPaths‘𝐺)𝑃 ↔ (𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡𝑃)) | |
19 | ispth 27498 | . 2 ⊢ (𝐹(Paths‘𝐺)𝑃 ↔ (𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡(𝑃 ↾ (1..^(♯‘𝐹))) ∧ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅)) | |
20 | 17, 18, 19 | 3imtr4i 294 | 1 ⊢ (𝐹(SPaths‘𝐺)𝑃 → 𝐹(Paths‘𝐺)𝑃) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 ∧ w3a 1083 = wceq 1533 ∈ wcel 2110 ∩ cin 3935 ∅c0 4291 {cpr 4563 class class class wbr 5059 ◡ccnv 5549 ↾ cres 5552 “ cima 5553 Fun wfun 6344 ‘cfv 6350 (class class class)co 7150 0cc0 10531 1c1 10532 + caddc 10534 ℤcz 11975 ..^cfzo 13027 ♯chash 13684 Trailsctrls 27466 Pathscpths 27487 SPathscspths 27488 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-rep 5183 ax-sep 5196 ax-nul 5203 ax-pow 5259 ax-pr 5322 ax-un 7455 ax-cnex 10587 ax-resscn 10588 ax-1cn 10589 ax-icn 10590 ax-addcl 10591 ax-addrcl 10592 ax-mulcl 10593 ax-mulrcl 10594 ax-mulcom 10595 ax-addass 10596 ax-mulass 10597 ax-distr 10598 ax-i2m1 10599 ax-1ne0 10600 ax-1rid 10601 ax-rnegex 10602 ax-rrecex 10603 ax-cnre 10604 ax-pre-lttri 10605 ax-pre-lttrn 10606 ax-pre-ltadd 10607 ax-pre-mulgt0 10608 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-ifp 1058 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3497 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4833 df-int 4870 df-iun 4914 df-br 5060 df-opab 5122 df-mpt 5140 df-tr 5166 df-id 5455 df-eprel 5460 df-po 5469 df-so 5470 df-fr 5509 df-we 5511 df-xp 5556 df-rel 5557 df-cnv 5558 df-co 5559 df-dm 5560 df-rn 5561 df-res 5562 df-ima 5563 df-pred 6143 df-ord 6189 df-on 6190 df-lim 6191 df-suc 6192 df-iota 6309 df-fun 6352 df-fn 6353 df-f 6354 df-f1 6355 df-fo 6356 df-f1o 6357 df-fv 6358 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-om 7575 df-1st 7683 df-2nd 7684 df-wrecs 7941 df-recs 8002 df-rdg 8040 df-1o 8096 df-er 8283 df-map 8402 df-en 8504 df-dom 8505 df-sdom 8506 df-fin 8507 df-card 9362 df-pnf 10671 df-mnf 10672 df-xr 10673 df-ltxr 10674 df-le 10675 df-sub 10866 df-neg 10867 df-nn 11633 df-n0 11892 df-z 11976 df-uz 12238 df-fz 12887 df-fzo 13028 df-hash 13685 df-word 13856 df-wlks 27375 df-trls 27468 df-pths 27491 df-spths 27492 |
This theorem is referenced by: spthiswlk 27503 isspthonpth 27524 spthonpthon 27526 usgr2trlspth 27536 usgr2pthspth 27537 wspthsnonn0vne 27690 spthcycl 32371 |
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