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| Mirrors > Home > MPE Home > Th. List > Mathboxes > gpgprismgrusgra | Structured version Visualization version GIF version | ||
| Description: The generalized Petersen graphs G(N,1), which are the N-prisms, are simple graphs. (Contributed by AV, 31-Oct-2025.) |
| Ref | Expression |
|---|---|
| gpgprismgrusgra | ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 gPetersenGr 1) ∈ USGraph) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1zzd 12674 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ ℤ) | |
| 2 | eluzelre 12923 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 𝑁 ∈ ℝ) | |
| 3 | 2re 12364 | . . . . . . 7 ⊢ 2 ∈ ℝ | |
| 4 | 3 | a1i 11 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ∈ ℝ) |
| 5 | 2ne0 12396 | . . . . . . 7 ⊢ 2 ≠ 0 | |
| 6 | 5 | a1i 11 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ≠ 0) |
| 7 | 2, 4, 6 | 3jca 1146 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0)) |
| 8 | redivcl 11983 | . . . . 5 ⊢ ((𝑁 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0) → (𝑁 / 2) ∈ ℝ) | |
| 9 | 7, 8 | syl 18 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 / 2) ∈ ℝ) |
| 10 | 9 | ceilcld 13929 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℤ) |
| 11 | 1red 11258 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ ℝ) | |
| 12 | 8 | ceilcld 13929 | . . . . . 6 ⊢ ((𝑁 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0) → (⌈‘(𝑁 / 2)) ∈ ℤ) |
| 13 | 7, 12 | syl 18 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℤ) |
| 14 | 13 | zred 12750 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℝ) |
| 15 | 1lt2 12462 | . . . . 5 ⊢ 1 < 2 | |
| 16 | 15 | a1i 11 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 < 2) |
| 17 | 2ltceilhalf 48285 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ≤ (⌈‘(𝑁 / 2))) | |
| 18 | 11, 4, 14, 16, 17 | ltletrd 11419 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 < (⌈‘(𝑁 / 2))) |
| 19 | fzolb 13746 | . . 3 ⊢ (1 ∈ (1..^(⌈‘(𝑁 / 2))) ↔ (1 ∈ ℤ ∧ (⌈‘(𝑁 / 2)) ∈ ℤ ∧ 1 < (⌈‘(𝑁 / 2)))) | |
| 20 | 1, 10, 18, 19 | syl3anbrc 1362 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ (1..^(⌈‘(𝑁 / 2)))) |
| 21 | gpgusgra 49038 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘3) ∧ 1 ∈ (1..^(⌈‘(𝑁 / 2)))) → (𝑁 gPetersenGr 1) ∈ USGraph) | |
| 22 | 20, 21 | mpdan 700 | 1 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 gPetersenGr 1) ∈ USGraph) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 ∈ wcel 2145 ≠ wne 2955 class class class wbr 5103 ‘cfv 6535 (class class class)co 7416 ℝcr 11148 0cc0 11149 1c1 11150 < clt 11292 / cdiv 11920 2c2 12344 3c3 12345 ℤcz 12640 ℤ≥cuz 12912 ..^cfzo 13734 ⌈cceil 13877 USGraphcusgr 29641 gPetersenGr cgpg 49021 |
| 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 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7742 ax-cnex 11205 ax-resscn 11206 ax-1cn 11207 ax-icn 11208 ax-addcl 11209 ax-addrcl 11210 ax-mulcl 11211 ax-mulrcl 11212 ax-mulcom 11213 ax-addass 11214 ax-mulass 11215 ax-distr 11216 ax-i2m1 11217 ax-1ne0 11218 ax-1rid 11219 ax-rnegex 11220 ax-rrecex 11221 ax-cnre 11222 ax-pre-lttri 11223 ax-pre-lttrn 11224 ax-pre-ltadd 11225 ax-pre-mulgt0 11226 ax-pre-sup 11227 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 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 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6301 df-ord 6362 df-on 6363 df-lim 6364 df-suc 6365 df-iota 6491 df-fun 6537 df-fn 6538 df-f 6539 df-f1 6540 df-fo 6541 df-f1o 6542 df-fv 6543 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7869 df-1st 7992 df-2nd 7993 df-frecs 8285 df-wrecs 8316 df-recs 8365 df-rdg 8404 df-1o 8462 df-oadd 8466 df-er 8703 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-sup 9419 df-inf 9420 df-dju 9931 df-card 9969 df-pnf 11294 df-mnf 11295 df-xr 11296 df-ltxr 11297 df-le 11298 df-sub 11492 df-neg 11493 df-div 11921 df-nn 12283 df-2 12352 df-3 12353 df-4 12354 df-5 12355 df-6 12356 df-7 12357 df-8 12358 df-9 12359 df-n0 12554 df-xnn0 12627 df-z 12641 df-dec 12762 df-uz 12913 df-rp 13068 df-fz 13587 df-fzo 13735 df-fl 13878 df-ceil 13879 df-mod 13956 df-hash 14420 df-dvds 16368 df-struct 17264 df-slot 17299 df-ndx 17311 df-base 17327 df-edgf 29478 df-vtx 29487 df-iedg 29488 df-usgr 29643 df-gpg 49022 |
| This theorem is used by: gpgprismgr4cycllem11 49086 grlimedgnedg 49112 |
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