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| Mirrors > Home > MPE Home > Th. List > Mathboxes > pthacycspth | Structured version Visualization version GIF version | ||
| Description: A path in an acyclic graph is a simple path. (Contributed by BTernaryTau, 21-Oct-2023.) |
| Ref | Expression |
|---|---|
| pthacycspth | ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → 𝐹(SPaths‘𝐺)𝑃) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cyclispth 30366 | . . . . . 6 ⊢ (𝐹(Cycles‘𝐺)𝑃 → 𝐹(Paths‘𝐺)𝑃) | |
| 2 | 1 | a1i 11 | . . . . 5 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → (𝐹(Cycles‘𝐺)𝑃 → 𝐹(Paths‘𝐺)𝑃)) |
| 3 | acycgrcycl 30735 | . . . . . . 7 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Cycles‘𝐺)𝑃) → 𝐹 = ∅) | |
| 4 | 3 | ex 418 | . . . . . 6 ⊢ (𝐺 ∈ AcyclicGraph → (𝐹(Cycles‘𝐺)𝑃 → 𝐹 = ∅)) |
| 5 | 4 | adantr 486 | . . . . 5 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → (𝐹(Cycles‘𝐺)𝑃 → 𝐹 = ∅)) |
| 6 | 2, 5 | jcad 522 | . . . 4 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → (𝐹(Cycles‘𝐺)𝑃 → (𝐹(Paths‘𝐺)𝑃 ∧ 𝐹 = ∅))) |
| 7 | spthcycl 30374 | . . . . 5 ⊢ ((𝐹(Paths‘𝐺)𝑃 ∧ 𝐹 = ∅) ↔ (𝐹(SPaths‘𝐺)𝑃 ∧ 𝐹(Cycles‘𝐺)𝑃)) | |
| 8 | 7 | simplbi 502 | . . . 4 ⊢ ((𝐹(Paths‘𝐺)𝑃 ∧ 𝐹 = ∅) → 𝐹(SPaths‘𝐺)𝑃) |
| 9 | 6, 8 | syl6 36 | . . 3 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → (𝐹(Cycles‘𝐺)𝑃 → 𝐹(SPaths‘𝐺)𝑃)) |
| 10 | pthisspthorcycl 30372 | . . . 4 ⊢ (𝐹(Paths‘𝐺)𝑃 → (𝐹(SPaths‘𝐺)𝑃 ∨ 𝐹(Cycles‘𝐺)𝑃)) | |
| 11 | 10 | adantl 487 | . . 3 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → (𝐹(SPaths‘𝐺)𝑃 ∨ 𝐹(Cycles‘𝐺)𝑃)) |
| 12 | orim2 983 | . . 3 ⊢ ((𝐹(Cycles‘𝐺)𝑃 → 𝐹(SPaths‘𝐺)𝑃) → ((𝐹(SPaths‘𝐺)𝑃 ∨ 𝐹(Cycles‘𝐺)𝑃) → (𝐹(SPaths‘𝐺)𝑃 ∨ 𝐹(SPaths‘𝐺)𝑃))) | |
| 13 | 9, 11, 12 | sylc 66 | . 2 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → (𝐹(SPaths‘𝐺)𝑃 ∨ 𝐹(SPaths‘𝐺)𝑃)) |
| 14 | pm1.2 917 | . 2 ⊢ ((𝐹(SPaths‘𝐺)𝑃 ∨ 𝐹(SPaths‘𝐺)𝑃) → 𝐹(SPaths‘𝐺)𝑃) | |
| 15 | 13, 14 | syl 18 | 1 ⊢ ((𝐺 ∈ AcyclicGraph ∧ 𝐹(Paths‘𝐺)𝑃) → 𝐹(SPaths‘𝐺)𝑃) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∨ wo 861 = wceq 1570 ∈ wcel 2145 ∅c0 4279 class class class wbr 5103 ‘cfv 6531 Pathscpths 30277 SPathscspths 30278 Cyclesccycls 30354 AcyclicGraphcacycgr 30730 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-ifp 1079 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-1st 7990 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-1o 8460 df-er 8701 df-map 8833 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-card 10001 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-nn 12317 df-n0 12588 df-z 12675 df-uz 12947 df-fz 13621 df-fzo 13769 df-hash 14455 df-word 14639 df-wlks 30162 df-trls 30257 df-pths 30281 df-spths 30282 df-cycls 30356 df-acycgr 30731 |
| This theorem is used by: (None) |
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