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| Mirrors > Home > MPE Home > Th. List > Mathboxes > 41prothprmlem1 | Structured version Visualization version GIF version | ||
| Description: Lemma 1 for 41prothprm 47617. (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 12582 | . . . . . 6 ⊢ ;41 = ((;10 · 4) + 1) | |
| 3 | 1, 2 | eqtri 2752 | . . . . 5 ⊢ 𝑃 = ((;10 · 4) + 1) |
| 4 | 3 | oveq1i 7350 | . . . 4 ⊢ (𝑃 − 1) = (((;10 · 4) + 1) − 1) |
| 5 | 10nn 12595 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
| 6 | 5 | nncni 12126 | . . . . . 6 ⊢ ;10 ∈ ℂ |
| 7 | 4cn 12201 | . . . . . 6 ⊢ 4 ∈ ℂ | |
| 8 | 6, 7 | mulcli 11110 | . . . . 5 ⊢ (;10 · 4) ∈ ℂ |
| 9 | pncan1 11532 | . . . . 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 2752 | . . 3 ⊢ (𝑃 − 1) = (;10 · 4) |
| 12 | 11 | oveq1i 7350 | . 2 ⊢ ((𝑃 − 1) / 2) = ((;10 · 4) / 2) |
| 13 | 2cn 12191 | . . . 4 ⊢ 2 ∈ ℂ | |
| 14 | 2ne0 12220 | . . . 4 ⊢ 2 ≠ 0 | |
| 15 | 6, 7, 13, 14 | divassi 11868 | . . 3 ⊢ ((;10 · 4) / 2) = (;10 · (4 / 2)) |
| 16 | 4d2e2 12281 | . . . . 5 ⊢ (4 / 2) = 2 | |
| 17 | 16 | oveq2i 7351 | . . . 4 ⊢ (;10 · (4 / 2)) = (;10 · 2) |
| 18 | 2nn0 12389 | . . . . 5 ⊢ 2 ∈ ℕ0 | |
| 19 | 18 | dec0u 12600 | . . . 4 ⊢ (;10 · 2) = ;20 |
| 20 | 17, 19 | eqtri 2752 | . . 3 ⊢ (;10 · (4 / 2)) = ;20 |
| 21 | 15, 20 | eqtri 2752 | . 2 ⊢ ((;10 · 4) / 2) = ;20 |
| 22 | 12, 21 | eqtri 2752 | 1 ⊢ ((𝑃 − 1) / 2) = ;20 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 (class class class)co 7340 ℂcc 10995 0cc0 10997 1c1 10998 + caddc 11000 · cmul 11002 − cmin 11335 / cdiv 11765 2c2 12171 4c4 12173 ;cdc 12579 |
| 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 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5367 ax-un 7662 ax-resscn 11054 ax-1cn 11055 ax-icn 11056 ax-addcl 11057 ax-addrcl 11058 ax-mulcl 11059 ax-mulrcl 11060 ax-mulcom 11061 ax-addass 11062 ax-mulass 11063 ax-distr 11064 ax-i2m1 11065 ax-1ne0 11066 ax-1rid 11067 ax-rnegex 11068 ax-rrecex 11069 ax-cnre 11070 ax-pre-lttri 11071 ax-pre-lttrn 11072 ax-pre-ltadd 11073 ax-pre-mulgt0 11074 |
| 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 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3343 df-reu 3344 df-rab 3393 df-v 3435 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-iun 4940 df-br 5089 df-opab 5151 df-mpt 5170 df-tr 5196 df-id 5508 df-eprel 5513 df-po 5521 df-so 5522 df-fr 5566 df-we 5568 df-xp 5619 df-rel 5620 df-cnv 5621 df-co 5622 df-dm 5623 df-rn 5624 df-res 5625 df-ima 5626 df-pred 6243 df-ord 6304 df-on 6305 df-lim 6306 df-suc 6307 df-iota 6432 df-fun 6478 df-fn 6479 df-f 6480 df-f1 6481 df-fo 6482 df-f1o 6483 df-fv 6484 df-riota 7297 df-ov 7343 df-oprab 7344 df-mpo 7345 df-om 7791 df-2nd 7916 df-frecs 8205 df-wrecs 8236 df-recs 8285 df-rdg 8323 df-er 8616 df-en 8864 df-dom 8865 df-sdom 8866 df-pnf 11139 df-mnf 11140 df-xr 11141 df-ltxr 11142 df-le 11143 df-sub 11337 df-neg 11338 df-div 11766 df-nn 12117 df-2 12179 df-3 12180 df-4 12181 df-5 12182 df-6 12183 df-7 12184 df-8 12185 df-9 12186 df-n0 12373 df-dec 12580 |
| This theorem is referenced by: 41prothprmlem2 47616 |
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