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| Mirrors > Home > MPE Home > Th. List > Mathboxes > 41prothprmlem1 | Structured version Visualization version GIF version | ||
| Description: Lemma 1 for 41prothprm 48798. (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 12821 | . . . . . 6 ⊢ ;41 = ((;10 · 4) + 1) | |
| 3 | 1, 2 | eqtri 2783 | . . . . 5 ⊢ 𝑃 = ((;10 · 4) + 1) |
| 4 | 3 | oveq1i 7431 | . . . 4 ⊢ (𝑃 − 1) = (((;10 · 4) + 1) − 1) |
| 5 | 10nn 12838 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
| 6 | 5 | nncni 12349 | . . . . . 6 ⊢ ;10 ∈ ℂ |
| 7 | 4cn 12432 | . . . . . 6 ⊢ 4 ∈ ℂ | |
| 8 | 6, 7 | mulcli 11320 | . . . . 5 ⊢ (;10 · 4) ∈ ℂ |
| 9 | pncan1 11744 | . . . . 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 2783 | . . 3 ⊢ (𝑃 − 1) = (;10 · 4) |
| 12 | 11 | oveq1i 7431 | . 2 ⊢ ((𝑃 − 1) / 2) = ((;10 · 4) / 2) |
| 13 | 2cn 12422 | . . . 4 ⊢ 2 ∈ ℂ | |
| 14 | 2ne0 12453 | . . . 4 ⊢ 2 ≠ 0 | |
| 15 | 6, 7, 13, 14 | divassi 12077 | . . 3 ⊢ ((;10 · 4) / 2) = (;10 · (4 / 2)) |
| 16 | 4div2e2 12518 | . . . . 5 ⊢ (4 / 2) = 2 | |
| 17 | 16 | oveq2i 7432 | . . . 4 ⊢ (;10 · (4 / 2)) = (;10 · 2) |
| 18 | 2nn0 12627 | . . . . 5 ⊢ 2 ∈ ℕ0 | |
| 19 | 18 | dec0u 12844 | . . . 4 ⊢ (;10 · 2) = ;20 |
| 20 | 17, 19 | eqtri 2783 | . . 3 ⊢ (;10 · (4 / 2)) = ;20 |
| 21 | 15, 20 | eqtri 2783 | . 2 ⊢ ((;10 · 4) / 2) = ;20 |
| 22 | 12, 21 | eqtri 2783 | 1 ⊢ ((𝑃 − 1) / 2) = ;20 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2144 (class class class)co 7421 ℂcc 11202 0cc0 11204 1c1 11205 + caddc 11207 · cmul 11209 − cmin 11545 / cdiv 11977 2c2 12401 4c4 12403 ;cdc 12818 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-resscn 11261 ax-1cn 11262 ax-icn 11263 ax-addcl 11264 ax-addrcl 11265 ax-mulcl 11266 ax-mulrcl 11267 ax-mulcom 11268 ax-addass 11269 ax-mulass 11270 ax-distr 11271 ax-i2m1 11272 ax-1ne0 11273 ax-1rid 11274 ax-rnegex 11275 ax-rrecex 11276 ax-cnre 11277 ax-pre-lttri 11278 ax-pre-lttrn 11279 ax-pre-ltadd 11280 ax-pre-mulgt0 11281 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-om 7879 df-2nd 8003 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-er 8721 df-en 8978 df-dom 8979 df-sdom 8980 df-pnf 11349 df-mnf 11350 df-xr 11351 df-ltxr 11352 df-le 11353 df-sub 11547 df-neg 11548 df-div 11978 df-nn 12340 df-2 12409 df-3 12410 df-4 12411 df-5 12412 df-6 12413 df-7 12414 df-8 12415 df-9 12416 df-n0 12611 df-dec 12819 |
| This theorem is used by: 41prothprmlem2 48797 |
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