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Mirrors > Home > MPE Home > Th. List > gausslemma2dlem0b | Structured version Visualization version GIF version |
Description: Auxiliary lemma 2 for gausslemma2d 25944. (Contributed by AV, 9-Jul-2021.) |
Ref | Expression |
---|---|
gausslemma2dlem0a.p | ⊢ (𝜑 → 𝑃 ∈ (ℙ ∖ {2})) |
gausslemma2dlem0b.h | ⊢ 𝐻 = ((𝑃 − 1) / 2) |
Ref | Expression |
---|---|
gausslemma2dlem0b | ⊢ (𝜑 → 𝐻 ∈ ℕ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | gausslemma2dlem0b.h | . 2 ⊢ 𝐻 = ((𝑃 − 1) / 2) | |
2 | gausslemma2dlem0a.p | . . . 4 ⊢ (𝜑 → 𝑃 ∈ (ℙ ∖ {2})) | |
3 | eldifi 4102 | . . . . . 6 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℙ) | |
4 | prmuz2 16034 | . . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ (ℤ≥‘2)) | |
5 | 3, 4 | syl 17 | . . . . 5 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ (ℤ≥‘2)) |
6 | nnoddn2prm 16142 | . . . . . 6 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → (𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃)) | |
7 | nnoddm1d2 15731 | . . . . . . . 8 ⊢ (𝑃 ∈ ℕ → (¬ 2 ∥ 𝑃 ↔ ((𝑃 + 1) / 2) ∈ ℕ)) | |
8 | 7 | biimpa 479 | . . . . . . 7 ⊢ ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → ((𝑃 + 1) / 2) ∈ ℕ) |
9 | 8 | nnnn0d 11949 | . . . . . 6 ⊢ ((𝑃 ∈ ℕ ∧ ¬ 2 ∥ 𝑃) → ((𝑃 + 1) / 2) ∈ ℕ0) |
10 | 6, 9 | syl 17 | . . . . 5 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → ((𝑃 + 1) / 2) ∈ ℕ0) |
11 | 5, 10 | jca 514 | . . . 4 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → (𝑃 ∈ (ℤ≥‘2) ∧ ((𝑃 + 1) / 2) ∈ ℕ0)) |
12 | 2, 11 | syl 17 | . . 3 ⊢ (𝜑 → (𝑃 ∈ (ℤ≥‘2) ∧ ((𝑃 + 1) / 2) ∈ ℕ0)) |
13 | nno 15727 | . . 3 ⊢ ((𝑃 ∈ (ℤ≥‘2) ∧ ((𝑃 + 1) / 2) ∈ ℕ0) → ((𝑃 − 1) / 2) ∈ ℕ) | |
14 | 12, 13 | syl 17 | . 2 ⊢ (𝜑 → ((𝑃 − 1) / 2) ∈ ℕ) |
15 | 1, 14 | eqeltrid 2917 | 1 ⊢ (𝜑 → 𝐻 ∈ ℕ) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 398 = wceq 1533 ∈ wcel 2110 ∖ cdif 3932 {csn 4560 class class class wbr 5058 ‘cfv 6349 (class class class)co 7150 1c1 10532 + caddc 10534 − cmin 10864 / cdiv 11291 ℕcn 11632 2c2 11686 ℕ0cn0 11891 ℤ≥cuz 12237 ∥ cdvds 15601 ℙcprime 16009 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5195 ax-nul 5202 ax-pow 5258 ax-pr 5321 ax-un 7455 ax-cnex 10587 ax-resscn 10588 ax-1cn 10589 ax-icn 10590 ax-addcl 10591 ax-addrcl 10592 ax-mulcl 10593 ax-mulrcl 10594 ax-mulcom 10595 ax-addass 10596 ax-mulass 10597 ax-distr 10598 ax-i2m1 10599 ax-1ne0 10600 ax-1rid 10601 ax-rnegex 10602 ax-rrecex 10603 ax-cnre 10604 ax-pre-lttri 10605 ax-pre-lttrn 10606 ax-pre-ltadd 10607 ax-pre-mulgt0 10608 ax-pre-sup 10609 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-pss 3953 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4561 df-pr 4563 df-tp 4565 df-op 4567 df-uni 4832 df-iun 4913 df-br 5059 df-opab 5121 df-mpt 5139 df-tr 5165 df-id 5454 df-eprel 5459 df-po 5468 df-so 5469 df-fr 5508 df-we 5510 df-xp 5555 df-rel 5556 df-cnv 5557 df-co 5558 df-dm 5559 df-rn 5560 df-res 5561 df-ima 5562 df-pred 6142 df-ord 6188 df-on 6189 df-lim 6190 df-suc 6191 df-iota 6308 df-fun 6351 df-fn 6352 df-f 6353 df-f1 6354 df-fo 6355 df-f1o 6356 df-fv 6357 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-om 7575 df-2nd 7684 df-wrecs 7941 df-recs 8002 df-rdg 8040 df-1o 8096 df-2o 8097 df-er 8283 df-en 8504 df-dom 8505 df-sdom 8506 df-fin 8507 df-sup 8900 df-pnf 10671 df-mnf 10672 df-xr 10673 df-ltxr 10674 df-le 10675 df-sub 10866 df-neg 10867 df-div 11292 df-nn 11633 df-2 11694 df-3 11695 df-4 11696 df-n0 11892 df-z 11976 df-uz 12238 df-rp 12384 df-seq 13364 df-exp 13424 df-cj 14452 df-re 14453 df-im 14454 df-sqrt 14588 df-abs 14589 df-dvds 15602 df-prm 16010 |
This theorem is referenced by: gausslemma2dlem0c 25928 gausslemma2dlem0h 25933 gausslemma2dlem1 25936 gausslemma2dlem2 25937 gausslemma2dlem6 25942 gausslemma2dlem7 25943 gausslemma2d 25944 lgsquadlem1 25950 lgsquadlem2 25951 lgsquadlem3 25952 |
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