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Theorem pell14qrexpcl 37431
Description: Positive Pell solutions are closed under integer powers. (Contributed by Stefan O'Rear, 18-Sep-2014.)
Assertion
Ref Expression
pell14qrexpcl |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) /\ B e. ZZ ) -> ( A ^ B ) e. (Pell14QR ` D ) )
Proof of Theorem pell14qrexpcl
StepHypRef Expression
1 elznn0 11392 . . 3 |- ( B e. ZZ <-> ( B e. RR /\ ( B e. NN0 \/ -u B e. NN0 ) ) )
2 simplll 798 . . . . . 6 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ B e. NN0 ) -> D e. ( NN \ ◻NN ) )
3 simpllr 799 . . . . . 6 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ B e. NN0 ) -> A e. (Pell14QR ` D ) )
4 simpr 477 . . . . . 6 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ B e. NN0 ) -> B e. NN0 )
5 pell14qrexpclnn0 37430 . . . . . 6 |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) /\ B e. NN0 ) -> ( A ^ B ) e. (Pell14QR ` D ) )
62, 3, 4, 5syl3anc 1326 . . . . 5 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ B e. NN0 ) -> ( A ^ B ) e. (Pell14QR ` D ) )
7 pell14qrre 37421 . . . . . . . . 9 |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) -> A e. RR )
87recnd 10068 . . . . . . . 8 |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) -> A e. CC )
98ad2antrr 762 . . . . . . 7 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> A e. CC )
10 simplr 792 . . . . . . . 8 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> B e. RR )
1110recnd 10068 . . . . . . 7 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> B e. CC )
12 simpr 477 . . . . . . 7 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> -u B e. NN0 )
13 expneg2 12869 . . . . . . 7 |- ( ( A e. CC /\ B e. CC /\ -u B e. NN0 ) -> ( A ^ B ) = ( 1 / ( A ^ -u B ) ) )
149, 11, 12, 13syl3anc 1326 . . . . . 6 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> ( A ^ B ) = ( 1 / ( A ^ -u B ) ) )
15 simplll 798 . . . . . . 7 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> D e. ( NN \ ◻NN ) )
16 simpllr 799 . . . . . . . 8 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> A e. (Pell14QR ` D ) )
17 pell14qrexpclnn0 37430 . . . . . . . 8 |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) /\ -u B e. NN0 ) -> ( A ^ -u B ) e. (Pell14QR ` D ) )
1815, 16, 12, 17syl3anc 1326 . . . . . . 7 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> ( A ^ -u B ) e. (Pell14QR ` D ) )
19 pell14qrreccl 37428 . . . . . . 7 |- ( ( D e. ( NN \ ◻NN ) /\ ( A ^ -u B ) e. (Pell14QR ` D ) ) -> ( 1 / ( A ^ -u B ) ) e. (Pell14QR ` D ) )
2015, 18, 19syl2anc 693 . . . . . 6 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> ( 1 / ( A ^ -u B ) ) e. (Pell14QR ` D ) )
2114, 20eqeltrd 2701 . . . . 5 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ -u B e. NN0 ) -> ( A ^ B ) e. (Pell14QR ` D ) )
226, 21jaodan 826 . . . 4 |- ( ( ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) /\ B e. RR ) /\ ( B e. NN0 \/ -u B e. NN0 ) ) -> ( A ^ B ) e. (Pell14QR ` D ) )
2322expl 648 . . 3 |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) -> ( ( B e. RR /\ ( B e. NN0 \/ -u B e. NN0 ) ) -> ( A ^ B ) e. (Pell14QR ` D ) ) )
241, 23syl5bi 232 . 2 |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) ) -> ( B e. ZZ -> ( A ^ B ) e. (Pell14QR ` D ) ) )
25243impia 1261 1 |- ( ( D e. ( NN \ ◻NN ) /\ A e. (Pell14QR ` D ) /\ B e. ZZ ) -> ( A ^ B ) e. (Pell14QR ` D ) )
Colors of variables: wff setvar class
Syntax hints:   -> wi 4   \/ wo 383   /\ wa 384   /\ w3a 1037   = wceq 1483   e. wcel 1990   \ cdif 3571   ` cfv 5888  (class class class)co 6650   CCcc 9934   RRcr 9935   1c1 9937   -ucneg 10267   / cdiv 10684   NNcn 11020   NN0cn0 11292   ZZcz 11377   ^cexp 12860  ◻NNcsquarenn 37400  Pell14QRcpell14qr 37403
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958  df-sup 8348  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-2 11079  df-3 11080  df-n0 11293  df-z 11378  df-uz 11688  df-rp 11833  df-seq 12802  df-exp 12861  df-cj 13839  df-re 13840  df-im 13841  df-sqrt 13975  df-abs 13976  df-pell14qr 37407  df-pell1234qr 37408
This theorem is referenced by:  pellfund14  37462  pellfund14b  37463
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