| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > pthd | Structured version Visualization version GIF version | ||
| Description: Two words representing a trail which also represent a path in a graph. (Contributed by AV, 10-Feb-2021.) (Proof shortened by AV, 30-Oct-2021.) |
| Ref | Expression |
|---|---|
| pthd.p | ⊢ (𝜑 → 𝑃 ∈ Word V) |
| pthd.r | ⊢ 𝑅 = ((♯‘𝑃) − 1) |
| pthd.s | ⊢ (𝜑 → ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| pthd.f | ⊢ (♯‘𝐹) = 𝑅 |
| pthd.t | ⊢ (𝜑 → 𝐹(Trails‘𝐺)𝑃) |
| Ref | Expression |
|---|---|
| pthd | ⊢ (𝜑 → 𝐹(Paths‘𝐺)𝑃) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pthd.t | . 2 ⊢ (𝜑 → 𝐹(Trails‘𝐺)𝑃) | |
| 2 | pthd.p | . . 3 ⊢ (𝜑 → 𝑃 ∈ Word V) | |
| 3 | pthd.f | . . . 4 ⊢ (♯‘𝐹) = 𝑅 | |
| 4 | pthd.r | . . . 4 ⊢ 𝑅 = ((♯‘𝑃) − 1) | |
| 5 | 3, 4 | eqtri 2752 | . . 3 ⊢ (♯‘𝐹) = ((♯‘𝑃) − 1) |
| 6 | pthd.s | . . . 4 ⊢ (𝜑 → ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) | |
| 7 | 3 | oveq2i 7398 | . . . . . 6 ⊢ (1..^(♯‘𝐹)) = (1..^𝑅) |
| 8 | 7 | raleqi 3297 | . . . . 5 ⊢ (∀𝑗 ∈ (1..^(♯‘𝐹))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) ↔ ∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 9 | 8 | ralbii 3075 | . . . 4 ⊢ (∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^(♯‘𝐹))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) ↔ ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 10 | 6, 9 | sylibr 234 | . . 3 ⊢ (𝜑 → ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^(♯‘𝐹))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 11 | 2, 5, 10 | pthdlem1 29696 | . 2 ⊢ (𝜑 → Fun ◡(𝑃 ↾ (1..^(♯‘𝐹)))) |
| 12 | 2, 5, 10 | pthdlem2 29698 | . 2 ⊢ (𝜑 → ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅) |
| 13 | ispth 29651 | . 2 ⊢ (𝐹(Paths‘𝐺)𝑃 ↔ (𝐹(Trails‘𝐺)𝑃 ∧ Fun ◡(𝑃 ↾ (1..^(♯‘𝐹))) ∧ ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅)) | |
| 14 | 1, 11, 12, 13 | syl3anbrc 1344 | 1 ⊢ (𝜑 → 𝐹(Paths‘𝐺)𝑃) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 ∀wral 3044 Vcvv 3447 ∩ cin 3913 ∅c0 4296 {cpr 4591 class class class wbr 5107 ◡ccnv 5637 ↾ cres 5640 “ cima 5641 Fun wfun 6505 ‘cfv 6511 (class class class)co 7387 0cc0 11068 1c1 11069 − cmin 11405 ..^cfzo 13615 ♯chash 14295 Word cword 14478 Trailsctrls 29618 Pathscpths 29640 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-int 4911 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-1st 7968 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-1o 8434 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-fin 8922 df-card 9892 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-2 12249 df-n0 12443 df-z 12530 df-uz 12794 df-fz 13469 df-fzo 13616 df-hash 14296 df-word 14479 df-trls 29620 df-pths 29644 |
| This theorem is referenced by: 2pthd 29870 3pthd 30103 gpgprismgr4cycllem11 48095 |
| Copyright terms: Public domain | W3C validator |