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| 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 2784 | . . 3 ⊢ (♯‘𝐹) = ((♯‘𝑃) − 1) |
| 6 | pthd.s | . . . 4 ⊢ (𝜑 → ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) | |
| 7 | 3 | oveq2i 7403 | . . . . . 6 ⊢ (1..^(♯‘𝐹)) = (1..^𝑅) |
| 8 | 7 | raleqi 3317 | . . . . 5 ⊢ (∀𝑗 ∈ (1..^(♯‘𝐹))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗)) ↔ ∀𝑗 ∈ (1..^𝑅)(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 9 | 8 | ralbii 3107 | . . . 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 236 | . . 3 ⊢ (𝜑 → ∀𝑖 ∈ (0..^(♯‘𝑃))∀𝑗 ∈ (1..^(♯‘𝐹))(𝑖 ≠ 𝑗 → (𝑃‘𝑖) ≠ (𝑃‘𝑗))) |
| 11 | 2, 5, 10 | pthdlem1 29912 | . 2 ⊢ (𝜑 → Fun ◡(𝑃 ↾ (1..^(♯‘𝐹)))) |
| 12 | 2, 5, 10 | pthdlem2 29914 | . 2 ⊢ (𝜑 → ((𝑃 “ {0, (♯‘𝐹)}) ∩ (𝑃 “ (1..^(♯‘𝐹)))) = ∅) |
| 13 | ispth 29867 | . 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 1356 | 1 ⊢ (𝜑 → 𝐹(Paths‘𝐺)𝑃) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 ≠ wne 2956 ∀wral 3075 Vcvv 3453 ∩ cin 3903 ∅c0 4285 {cpr 4583 class class class wbr 5099 ◡ccnv 5644 ↾ cres 5647 “ cima 5648 Fun wfun 6511 ‘cfv 6517 (class class class)co 7392 0cc0 11070 1c1 11071 − cmin 11411 ..^cfzo 13656 ♯chash 14340 Word cword 14523 Trailsctrls 29835 Pathscpths 29856 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5226 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-addrcl 11131 ax-mulcl 11132 ax-mulrcl 11133 ax-mulcom 11134 ax-addass 11135 ax-mulass 11136 ax-distr 11137 ax-i2m1 11138 ax-1ne0 11139 ax-1rid 11140 ax-rnegex 11141 ax-rrecex 11142 ax-cnre 11143 ax-pre-lttri 11144 ax-pre-lttrn 11145 ax-pre-ltadd 11146 ax-pre-mulgt0 11147 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3061 df-ral 3076 df-rex 3086 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-int 4905 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5540 df-eprel 5545 df-po 5553 df-so 5554 df-fr 5598 df-we 5600 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-pred 6284 df-ord 6345 df-on 6346 df-lim 6347 df-suc 6348 df-iota 6473 df-fun 6519 df-fn 6520 df-f 6521 df-f1 6522 df-fo 6523 df-f1o 6524 df-fv 6525 df-riota 7349 df-ov 7395 df-oprab 7396 df-mpo 7397 df-om 7843 df-1st 7966 df-2nd 7967 df-frecs 8257 df-wrecs 8288 df-recs 8337 df-rdg 8376 df-1o 8432 df-er 8673 df-en 8924 df-dom 8925 df-sdom 8926 df-fin 8927 df-card 9894 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11413 df-neg 11414 df-nn 12208 df-2 12277 df-n0 12479 df-z 12566 df-uz 12837 df-fz 13510 df-fzo 13657 df-hash 14341 df-word 14524 df-trls 29837 df-pths 29860 |
| This theorem is referenced by: 2pthd 30086 3pthd 30322 gpgprismgr4cycllem11 48691 |
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