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| Mirrors > Home > MPE Home > Th. List > Mathboxes > 41prothprmlem1 | Structured version Visualization version GIF version | ||
| Description: Lemma 1 for 41prothprm 48097. (Contributed by AV, 4-Jul-2020.) |
| Ref | Expression |
|---|---|
| 41prothprm.p | ⊢ 𝑃 = ;41 |
| Ref | Expression |
|---|---|
| 41prothprmlem1 | ⊢ ((𝑃 − 1) / 2) = ;20 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 41prothprm.p | . . . . . 6 ⊢ 𝑃 = ;41 | |
| 2 | dfdec10 12638 | . . . . . 6 ⊢ ;41 = ((;10 · 4) + 1) | |
| 3 | 1, 2 | eqtri 2762 | . . . . 5 ⊢ 𝑃 = ((;10 · 4) + 1) |
| 4 | 3 | oveq1i 7366 | . . . 4 ⊢ (𝑃 − 1) = (((;10 · 4) + 1) − 1) |
| 5 | 10nn 12651 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
| 6 | 5 | nncni 12175 | . . . . . 6 ⊢ ;10 ∈ ℂ |
| 7 | 4cn 12257 | . . . . . 6 ⊢ 4 ∈ ℂ | |
| 8 | 6, 7 | mulcli 11143 | . . . . 5 ⊢ (;10 · 4) ∈ ℂ |
| 9 | pncan1 11565 | . . . . 5 ⊢ ((;10 · 4) ∈ ℂ → (((;10 · 4) + 1) − 1) = (;10 · 4)) | |
| 10 | 8, 9 | ax-mp 5 | . . . 4 ⊢ (((;10 · 4) + 1) − 1) = (;10 · 4) |
| 11 | 4, 10 | eqtri 2762 | . . 3 ⊢ (𝑃 − 1) = (;10 · 4) |
| 12 | 11 | oveq1i 7366 | . 2 ⊢ ((𝑃 − 1) / 2) = ((;10 · 4) / 2) |
| 13 | 2cn 12247 | . . . 4 ⊢ 2 ∈ ℂ | |
| 14 | 2ne0 12276 | . . . 4 ⊢ 2 ≠ 0 | |
| 15 | 6, 7, 13, 14 | divassi 11902 | . . 3 ⊢ ((;10 · 4) / 2) = (;10 · (4 / 2)) |
| 16 | 4div2e2 12337 | . . . . 5 ⊢ (4 / 2) = 2 | |
| 17 | 16 | oveq2i 7367 | . . . 4 ⊢ (;10 · (4 / 2)) = (;10 · 2) |
| 18 | 2nn0 12445 | . . . . 5 ⊢ 2 ∈ ℕ0 | |
| 19 | 18 | dec0u 12656 | . . . 4 ⊢ (;10 · 2) = ;20 |
| 20 | 17, 19 | eqtri 2762 | . . 3 ⊢ (;10 · (4 / 2)) = ;20 |
| 21 | 15, 20 | eqtri 2762 | . 2 ⊢ ((;10 · 4) / 2) = ;20 |
| 22 | 12, 21 | eqtri 2762 | 1 ⊢ ((𝑃 − 1) / 2) = ;20 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ∈ wcel 2119 (class class class)co 7356 ℂcc 11027 0cc0 11029 1c1 11030 + caddc 11032 · cmul 11034 − cmin 11368 / cdiv 11798 2c2 12227 4c4 12229 ;cdc 12635 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-en 8884 df-dom 8885 df-sdom 8886 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 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-dec 12636 |
| This theorem is referenced by: 41prothprmlem2 48096 |
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