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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 12621 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ ℤ) | |
| 2 | eluzelre 12861 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 𝑁 ∈ ℝ) | |
| 3 | 2re 12312 | . . . . . . 7 ⊢ 2 ∈ ℝ | |
| 4 | 3 | a1i 11 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ∈ ℝ) |
| 5 | 2ne0 12342 | . . . . . . 7 ⊢ 2 ≠ 0 | |
| 6 | 5 | a1i 11 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ≠ 0) |
| 7 | 2, 4, 6 | 3jca 1128 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0)) |
| 8 | redivcl 11958 | . . . . 5 ⊢ ((𝑁 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0) → (𝑁 / 2) ∈ ℝ) | |
| 9 | 7, 8 | syl 17 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 / 2) ∈ ℝ) |
| 10 | 9 | ceilcld 13858 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℤ) |
| 11 | 1red 11234 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ ℝ) | |
| 12 | 8 | ceilcld 13858 | . . . . . 6 ⊢ ((𝑁 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0) → (⌈‘(𝑁 / 2)) ∈ ℤ) |
| 13 | 7, 12 | syl 17 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℤ) |
| 14 | 13 | zred 12695 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℝ) |
| 15 | 1lt2 12409 | . . . . 5 ⊢ 1 < 2 | |
| 16 | 15 | a1i 11 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 < 2) |
| 17 | 2ltceilhalf 47305 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ≤ (⌈‘(𝑁 / 2))) | |
| 18 | 11, 4, 14, 16, 17 | ltletrd 11393 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 < (⌈‘(𝑁 / 2))) |
| 19 | fzolb 13680 | . . 3 ⊢ (1 ∈ (1..^(⌈‘(𝑁 / 2))) ↔ (1 ∈ ℤ ∧ (⌈‘(𝑁 / 2)) ∈ ℤ ∧ 1 < (⌈‘(𝑁 / 2)))) | |
| 20 | 1, 10, 18, 19 | syl3anbrc 1344 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ (1..^(⌈‘(𝑁 / 2)))) |
| 21 | gpgusgra 48009 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘3) ∧ 1 ∈ (1..^(⌈‘(𝑁 / 2)))) → (𝑁 gPetersenGr 1) ∈ USGraph) | |
| 22 | 20, 21 | mpdan 687 | 1 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 gPetersenGr 1) ∈ USGraph) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1086 ∈ wcel 2108 ≠ wne 2932 class class class wbr 5119 ‘cfv 6530 (class class class)co 7403 ℝcr 11126 0cc0 11127 1c1 11128 < clt 11267 / cdiv 11892 2c2 12293 3c3 12294 ℤcz 12586 ℤ≥cuz 12850 ..^cfzo 13669 ⌈cceil 13806 USGraphcusgr 29074 gPetersenGr cgpg 47992 |
| 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 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7727 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 ax-pre-sup 11205 |
| 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 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-int 4923 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6483 df-fun 6532 df-fn 6533 df-f 6534 df-f1 6535 df-fo 6536 df-f1o 6537 df-fv 6538 df-riota 7360 df-ov 7406 df-oprab 7407 df-mpo 7408 df-om 7860 df-1st 7986 df-2nd 7987 df-frecs 8278 df-wrecs 8309 df-recs 8383 df-rdg 8422 df-1o 8478 df-oadd 8482 df-er 8717 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-sup 9452 df-inf 9453 df-dju 9913 df-card 9951 df-pnf 11269 df-mnf 11270 df-xr 11271 df-ltxr 11272 df-le 11273 df-sub 11466 df-neg 11467 df-div 11893 df-nn 12239 df-2 12301 df-3 12302 df-4 12303 df-5 12304 df-6 12305 df-7 12306 df-8 12307 df-9 12308 df-n0 12500 df-xnn0 12573 df-z 12587 df-dec 12707 df-uz 12851 df-rp 13007 df-fz 13523 df-fzo 13670 df-fl 13807 df-ceil 13808 df-mod 13885 df-hash 14347 df-dvds 16271 df-struct 17164 df-slot 17199 df-ndx 17211 df-base 17227 df-edgf 28914 df-vtx 28923 df-iedg 28924 df-usgr 29076 df-gpg 47993 |
| This theorem is referenced by: gpgprismgr4cycllem11 48052 |
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