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Mirrors > Home > MPE Home > Th. List > Mathboxes > 41prothprmlem1 | Structured version Visualization version GIF version |
Description: Lemma 1 for 41prothprm 42046. (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 11689 | . . . . . 6 ⊢ ;41 = ((;10 · 4) + 1) | |
3 | 1, 2 | eqtri 2782 | . . . . 5 ⊢ 𝑃 = ((;10 · 4) + 1) |
4 | 3 | oveq1i 6823 | . . . 4 ⊢ (𝑃 − 1) = (((;10 · 4) + 1) − 1) |
5 | 10nn 11706 | . . . . . . 7 ⊢ ;10 ∈ ℕ | |
6 | 5 | nncni 11222 | . . . . . 6 ⊢ ;10 ∈ ℂ |
7 | 4cn 11290 | . . . . . 6 ⊢ 4 ∈ ℂ | |
8 | 6, 7 | mulcli 10237 | . . . . 5 ⊢ (;10 · 4) ∈ ℂ |
9 | pncan1 10646 | . . . . 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 2782 | . . 3 ⊢ (𝑃 − 1) = (;10 · 4) |
12 | 11 | oveq1i 6823 | . 2 ⊢ ((𝑃 − 1) / 2) = ((;10 · 4) / 2) |
13 | 2cn 11283 | . . . 4 ⊢ 2 ∈ ℂ | |
14 | 2ne0 11305 | . . . 4 ⊢ 2 ≠ 0 | |
15 | 6, 7, 13, 14 | divassi 10973 | . . 3 ⊢ ((;10 · 4) / 2) = (;10 · (4 / 2)) |
16 | 4d2e2 11376 | . . . . 5 ⊢ (4 / 2) = 2 | |
17 | 16 | oveq2i 6824 | . . . 4 ⊢ (;10 · (4 / 2)) = (;10 · 2) |
18 | 2nn0 11501 | . . . . 5 ⊢ 2 ∈ ℕ0 | |
19 | 18 | dec0u 11712 | . . . 4 ⊢ (;10 · 2) = ;20 |
20 | 17, 19 | eqtri 2782 | . . 3 ⊢ (;10 · (4 / 2)) = ;20 |
21 | 15, 20 | eqtri 2782 | . 2 ⊢ ((;10 · 4) / 2) = ;20 |
22 | 12, 21 | eqtri 2782 | 1 ⊢ ((𝑃 − 1) / 2) = ;20 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1632 ∈ wcel 2139 (class class class)co 6813 ℂcc 10126 0cc0 10128 1c1 10129 + caddc 10131 · cmul 10133 − cmin 10458 / cdiv 10876 2c2 11262 4c4 11264 ;cdc 11685 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1871 ax-4 1886 ax-5 1988 ax-6 2054 ax-7 2090 ax-8 2141 ax-9 2148 ax-10 2168 ax-11 2183 ax-12 2196 ax-13 2391 ax-ext 2740 ax-sep 4933 ax-nul 4941 ax-pow 4992 ax-pr 5055 ax-un 7114 ax-resscn 10185 ax-1cn 10186 ax-icn 10187 ax-addcl 10188 ax-addrcl 10189 ax-mulcl 10190 ax-mulrcl 10191 ax-mulcom 10192 ax-addass 10193 ax-mulass 10194 ax-distr 10195 ax-i2m1 10196 ax-1ne0 10197 ax-1rid 10198 ax-rnegex 10199 ax-rrecex 10200 ax-cnre 10201 ax-pre-lttri 10202 ax-pre-lttrn 10203 ax-pre-ltadd 10204 ax-pre-mulgt0 10205 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3or 1073 df-3an 1074 df-tru 1635 df-ex 1854 df-nf 1859 df-sb 2047 df-eu 2611 df-mo 2612 df-clab 2747 df-cleq 2753 df-clel 2756 df-nfc 2891 df-ne 2933 df-nel 3036 df-ral 3055 df-rex 3056 df-reu 3057 df-rmo 3058 df-rab 3059 df-v 3342 df-sbc 3577 df-csb 3675 df-dif 3718 df-un 3720 df-in 3722 df-ss 3729 df-pss 3731 df-nul 4059 df-if 4231 df-pw 4304 df-sn 4322 df-pr 4324 df-tp 4326 df-op 4328 df-uni 4589 df-iun 4674 df-br 4805 df-opab 4865 df-mpt 4882 df-tr 4905 df-id 5174 df-eprel 5179 df-po 5187 df-so 5188 df-fr 5225 df-we 5227 df-xp 5272 df-rel 5273 df-cnv 5274 df-co 5275 df-dm 5276 df-rn 5277 df-res 5278 df-ima 5279 df-pred 5841 df-ord 5887 df-on 5888 df-lim 5889 df-suc 5890 df-iota 6012 df-fun 6051 df-fn 6052 df-f 6053 df-f1 6054 df-fo 6055 df-f1o 6056 df-fv 6057 df-riota 6774 df-ov 6816 df-oprab 6817 df-mpt2 6818 df-om 7231 df-wrecs 7576 df-recs 7637 df-rdg 7675 df-er 7911 df-en 8122 df-dom 8123 df-sdom 8124 df-pnf 10268 df-mnf 10269 df-xr 10270 df-ltxr 10271 df-le 10272 df-sub 10460 df-neg 10461 df-div 10877 df-nn 11213 df-2 11271 df-3 11272 df-4 11273 df-5 11274 df-6 11275 df-7 11276 df-8 11277 df-9 11278 df-n0 11485 df-dec 11686 |
This theorem is referenced by: 41prothprmlem2 42045 |
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