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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 12526 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ ℤ) | |
| 2 | eluzelre 12766 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 𝑁 ∈ ℝ) | |
| 3 | 2re 12223 | . . . . . . 7 ⊢ 2 ∈ ℝ | |
| 4 | 3 | a1i 11 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ∈ ℝ) |
| 5 | 2ne0 12253 | . . . . . . 7 ⊢ 2 ≠ 0 | |
| 6 | 5 | a1i 11 | . . . . . 6 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ≠ 0) |
| 7 | 2, 4, 6 | 3jca 1129 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 ∈ ℝ ∧ 2 ∈ ℝ ∧ 2 ≠ 0)) |
| 8 | redivcl 11864 | . . . . 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 13767 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℤ) |
| 11 | 1red 11137 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ ℝ) | |
| 12 | 8 | ceilcld 13767 | . . . . . 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 12600 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → (⌈‘(𝑁 / 2)) ∈ ℝ) |
| 15 | 1lt2 12315 | . . . . 5 ⊢ 1 < 2 | |
| 16 | 15 | a1i 11 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 < 2) |
| 17 | 2ltceilhalf 47641 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘3) → 2 ≤ (⌈‘(𝑁 / 2))) | |
| 18 | 11, 4, 14, 16, 17 | ltletrd 11297 | . . 3 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 < (⌈‘(𝑁 / 2))) |
| 19 | fzolb 13585 | . . 3 ⊢ (1 ∈ (1..^(⌈‘(𝑁 / 2))) ↔ (1 ∈ ℤ ∧ (⌈‘(𝑁 / 2)) ∈ ℤ ∧ 1 < (⌈‘(𝑁 / 2)))) | |
| 20 | 1, 10, 18, 19 | syl3anbrc 1345 | . 2 ⊢ (𝑁 ∈ (ℤ≥‘3) → 1 ∈ (1..^(⌈‘(𝑁 / 2)))) |
| 21 | gpgusgra 48370 | . 2 ⊢ ((𝑁 ∈ (ℤ≥‘3) ∧ 1 ∈ (1..^(⌈‘(𝑁 / 2)))) → (𝑁 gPetersenGr 1) ∈ USGraph) | |
| 22 | 20, 21 | mpdan 688 | 1 ⊢ (𝑁 ∈ (ℤ≥‘3) → (𝑁 gPetersenGr 1) ∈ USGraph) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ w3a 1087 ∈ wcel 2114 ≠ wne 2933 class class class wbr 5099 ‘cfv 6493 (class class class)co 7360 ℝcr 11029 0cc0 11030 1c1 11031 < clt 11170 / cdiv 11798 2c2 12204 3c3 12205 ℤcz 12492 ℤ≥cuz 12755 ..^cfzo 13574 ⌈cceil 13715 USGraphcusgr 29226 gPetersenGr cgpg 48353 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5225 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 ax-pre-sup 11108 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-rmo 3351 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-int 4904 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-oadd 8403 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-sup 9349 df-inf 9350 df-dju 9817 df-card 9855 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12150 df-2 12212 df-3 12213 df-4 12214 df-5 12215 df-6 12216 df-7 12217 df-8 12218 df-9 12219 df-n0 12406 df-xnn0 12479 df-z 12493 df-dec 12612 df-uz 12756 df-rp 12910 df-fz 13428 df-fzo 13575 df-fl 13716 df-ceil 13717 df-mod 13794 df-hash 14258 df-dvds 16184 df-struct 17078 df-slot 17113 df-ndx 17125 df-base 17141 df-edgf 29066 df-vtx 29075 df-iedg 29076 df-usgr 29228 df-gpg 48354 |
| This theorem is referenced by: gpgprismgr4cycllem11 48418 grlimedgnedg 48444 |
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