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Mirrors > Home > MPE Home > Th. List > sqnprm | Structured version Visualization version GIF version |
Description: A square is never prime. (Contributed by Mario Carneiro, 20-Jun-2015.) |
Ref | Expression |
---|---|
sqnprm | ⊢ (𝐴 ∈ ℤ → ¬ (𝐴↑2) ∈ ℙ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zre 11988 | . . . . . 6 ⊢ (𝐴 ∈ ℤ → 𝐴 ∈ ℝ) | |
2 | 1 | adantr 483 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → 𝐴 ∈ ℝ) |
3 | absresq 14664 | . . . . 5 ⊢ (𝐴 ∈ ℝ → ((abs‘𝐴)↑2) = (𝐴↑2)) | |
4 | 2, 3 | syl 17 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → ((abs‘𝐴)↑2) = (𝐴↑2)) |
5 | 2 | recnd 10671 | . . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → 𝐴 ∈ ℂ) |
6 | 5 | abscld 14798 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (abs‘𝐴) ∈ ℝ) |
7 | 6 | recnd 10671 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (abs‘𝐴) ∈ ℂ) |
8 | 7 | sqvald 13510 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → ((abs‘𝐴)↑2) = ((abs‘𝐴) · (abs‘𝐴))) |
9 | 4, 8 | eqtr3d 2860 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (𝐴↑2) = ((abs‘𝐴) · (abs‘𝐴))) |
10 | simpr 487 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (𝐴↑2) ∈ ℙ) | |
11 | 9, 10 | eqeltrrd 2916 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → ((abs‘𝐴) · (abs‘𝐴)) ∈ ℙ) |
12 | nn0abscl 14674 | . . . . . 6 ⊢ (𝐴 ∈ ℤ → (abs‘𝐴) ∈ ℕ0) | |
13 | 12 | adantr 483 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (abs‘𝐴) ∈ ℕ0) |
14 | 13 | nn0zd 12088 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (abs‘𝐴) ∈ ℤ) |
15 | sq1 13561 | . . . . . 6 ⊢ (1↑2) = 1 | |
16 | prmuz2 16042 | . . . . . . . . 9 ⊢ ((𝐴↑2) ∈ ℙ → (𝐴↑2) ∈ (ℤ≥‘2)) | |
17 | 16 | adantl 484 | . . . . . . . 8 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (𝐴↑2) ∈ (ℤ≥‘2)) |
18 | eluz2gt1 12323 | . . . . . . . 8 ⊢ ((𝐴↑2) ∈ (ℤ≥‘2) → 1 < (𝐴↑2)) | |
19 | 17, 18 | syl 17 | . . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → 1 < (𝐴↑2)) |
20 | 19, 4 | breqtrrd 5096 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → 1 < ((abs‘𝐴)↑2)) |
21 | 15, 20 | eqbrtrid 5103 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (1↑2) < ((abs‘𝐴)↑2)) |
22 | 5 | absge0d 14806 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → 0 ≤ (abs‘𝐴)) |
23 | 1re 10643 | . . . . . . 7 ⊢ 1 ∈ ℝ | |
24 | 0le1 11165 | . . . . . . 7 ⊢ 0 ≤ 1 | |
25 | lt2sq 13501 | . . . . . . 7 ⊢ (((1 ∈ ℝ ∧ 0 ≤ 1) ∧ ((abs‘𝐴) ∈ ℝ ∧ 0 ≤ (abs‘𝐴))) → (1 < (abs‘𝐴) ↔ (1↑2) < ((abs‘𝐴)↑2))) | |
26 | 23, 24, 25 | mpanl12 700 | . . . . . 6 ⊢ (((abs‘𝐴) ∈ ℝ ∧ 0 ≤ (abs‘𝐴)) → (1 < (abs‘𝐴) ↔ (1↑2) < ((abs‘𝐴)↑2))) |
27 | 6, 22, 26 | syl2anc 586 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (1 < (abs‘𝐴) ↔ (1↑2) < ((abs‘𝐴)↑2))) |
28 | 21, 27 | mpbird 259 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → 1 < (abs‘𝐴)) |
29 | eluz2b1 12322 | . . . 4 ⊢ ((abs‘𝐴) ∈ (ℤ≥‘2) ↔ ((abs‘𝐴) ∈ ℤ ∧ 1 < (abs‘𝐴))) | |
30 | 14, 28, 29 | sylanbrc 585 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → (abs‘𝐴) ∈ (ℤ≥‘2)) |
31 | nprm 16034 | . . 3 ⊢ (((abs‘𝐴) ∈ (ℤ≥‘2) ∧ (abs‘𝐴) ∈ (ℤ≥‘2)) → ¬ ((abs‘𝐴) · (abs‘𝐴)) ∈ ℙ) | |
32 | 30, 30, 31 | syl2anc 586 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ (𝐴↑2) ∈ ℙ) → ¬ ((abs‘𝐴) · (abs‘𝐴)) ∈ ℙ) |
33 | 11, 32 | pm2.65da 815 | 1 ⊢ (𝐴 ∈ ℤ → ¬ (𝐴↑2) ∈ ℙ) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 208 ∧ wa 398 = wceq 1537 ∈ wcel 2114 class class class wbr 5068 ‘cfv 6357 (class class class)co 7158 ℝcr 10538 0cc0 10539 1c1 10540 · cmul 10544 < clt 10677 ≤ cle 10678 2c2 11695 ℕ0cn0 11900 ℤcz 11984 ℤ≥cuz 12246 ↑cexp 13432 abscabs 14595 ℙcprime 16017 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616 ax-pre-sup 10617 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rmo 3148 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-2nd 7692 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-1o 8104 df-2o 8105 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-fin 8515 df-sup 8908 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-div 11300 df-nn 11641 df-2 11703 df-3 11704 df-n0 11901 df-z 11985 df-uz 12247 df-rp 12393 df-seq 13373 df-exp 13433 df-cj 14460 df-re 14461 df-im 14462 df-sqrt 14596 df-abs 14597 df-dvds 15610 df-prm 16018 |
This theorem is referenced by: 2sqblem 26009 2sqn0 26012 2sqcoprm 26013 2sqnn 26017 |
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