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Theorem resqrexlem1arp 11690
Description: Lemma for resqrex 11711.  1  +  A is a positive real (expressed in a way that will help apply seqf 10826 and similar theorems). (Contributed by Jim Kingdon, 28-Jul-2021.) (Revised by Jim Kingdon, 16-Oct-2022.)
Hypotheses
Ref Expression
resqrexlem1arp.a  |-  ( ph  ->  A  e.  RR )
resqrexlem1arp.agt0  |-  ( ph  ->  0  <_  A )
Assertion
Ref Expression
resqrexlem1arp  |-  ( (
ph  /\  N  e.  NN )  ->  ( ( NN  X.  { ( 1  +  A ) } ) `  N
)  e.  RR+ )

Proof of Theorem resqrexlem1arp
StepHypRef Expression
1 1red 8289 . . . . 5  |-  ( (
ph  /\  N  e.  NN )  ->  1  e.  RR )
2 resqrexlem1arp.a . . . . . 6  |-  ( ph  ->  A  e.  RR )
32adantr 276 . . . . 5  |-  ( (
ph  /\  N  e.  NN )  ->  A  e.  RR )
41, 3readdcld 8303 . . . 4  |-  ( (
ph  /\  N  e.  NN )  ->  ( 1  +  A )  e.  RR )
5 0lt1 8400 . . . . . 6  |-  0  <  1
65a1i 9 . . . . 5  |-  ( (
ph  /\  N  e.  NN )  ->  0  <  1 )
7 resqrexlem1arp.agt0 . . . . . 6  |-  ( ph  ->  0  <_  A )
87adantr 276 . . . . 5  |-  ( (
ph  /\  N  e.  NN )  ->  0  <_  A )
9 addgtge0 8724 . . . . 5  |-  ( ( ( 1  e.  RR  /\  A  e.  RR )  /\  ( 0  <  1  /\  0  <_  A ) )  -> 
0  <  ( 1  +  A ) )
101, 3, 6, 8, 9syl22anc 1275 . . . 4  |-  ( (
ph  /\  N  e.  NN )  ->  0  < 
( 1  +  A
) )
114, 10elrpd 10026 . . 3  |-  ( (
ph  /\  N  e.  NN )  ->  ( 1  +  A )  e.  RR+ )
12 fvconst2g 5898 . . 3  |-  ( ( ( 1  +  A
)  e.  RR+  /\  N  e.  NN )  ->  (
( NN  X.  {
( 1  +  A
) } ) `  N )  =  ( 1  +  A ) )
1311, 12sylancom 420 . 2  |-  ( (
ph  /\  N  e.  NN )  ->  ( ( NN  X.  { ( 1  +  A ) } ) `  N
)  =  ( 1  +  A ) )
1413, 11eqeltrd 2309 1  |-  ( (
ph  /\  N  e.  NN )  ->  ( ( NN  X.  { ( 1  +  A ) } ) `  N
)  e.  RR+ )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    = wceq 1398    e. wcel 2203   {csn 3689   class class class wbr 4109    X. cxp 4747   ` cfv 5352  (class class class)co 6050   RRcr 8126   0cc0 8127   1c1 8128    + caddc 8130    < clt 8308    <_ cle 8309   NNcn 9237   RR+crp 9986
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-addcom 8227  ax-addass 8229  ax-i2m1 8232  ax-0lt1 8233  ax-0id 8235  ax-rnegex 8236  ax-pre-ltwlin 8240  ax-pre-ltadd 8243
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-sbc 3043  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-br 4110  df-opab 4172  df-mpt 4173  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-fv 5360  df-ov 6053  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-rp 9987
This theorem is referenced by:  resqrexlemf  11692  resqrexlemf1  11693  resqrexlemfp1  11694
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