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Theorem rlimmul 12393
Description: Limit of the product of two converging functions. Proposition 12-2.1(c) of [Gleason] p. 168. (Contributed by Mario Carneiro, 22-Sep-2014.)
Hypotheses
Ref Expression
rlimadd.3  |-  ( (
ph  /\  x  e.  A )  ->  B  e.  V )
rlimadd.4  |-  ( (
ph  /\  x  e.  A )  ->  C  e.  V )
rlimadd.5  |-  ( ph  ->  ( x  e.  A  |->  B )  ~~> r  D
)
rlimadd.6  |-  ( ph  ->  ( x  e.  A  |->  C )  ~~> r  E
)
Assertion
Ref Expression
rlimmul  |-  ( ph  ->  ( x  e.  A  |->  ( B  x.  C
) )  ~~> r  ( D  x.  E ) )
Distinct variable groups:    x, A    x, D    ph, x    x, E
Allowed substitution hints:    B( x)    C( x)    V( x)

Proof of Theorem rlimmul
Dummy variables  w  v  y  z  u are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 rlimadd.3 . . 3  |-  ( (
ph  /\  x  e.  A )  ->  B  e.  V )
2 rlimadd.5 . . 3  |-  ( ph  ->  ( x  e.  A  |->  B )  ~~> r  D
)
31, 2rlimmptrcl 12356 . 2  |-  ( (
ph  /\  x  e.  A )  ->  B  e.  CC )
4 rlimadd.4 . . 3  |-  ( (
ph  /\  x  e.  A )  ->  C  e.  V )
5 rlimadd.6 . . 3  |-  ( ph  ->  ( x  e.  A  |->  C )  ~~> r  E
)
64, 5rlimmptrcl 12356 . 2  |-  ( (
ph  /\  x  e.  A )  ->  C  e.  CC )
7 rlimcl 12252 . . 3  |-  ( ( x  e.  A  |->  B )  ~~> r  D  ->  D  e.  CC )
82, 7syl 16 . 2  |-  ( ph  ->  D  e.  CC )
9 rlimcl 12252 . . 3  |-  ( ( x  e.  A  |->  C )  ~~> r  E  ->  E  e.  CC )
105, 9syl 16 . 2  |-  ( ph  ->  E  e.  CC )
11 ax-mulf 9026 . . 3  |-  x.  :
( CC  X.  CC )
--> CC
1211a1i 11 . 2  |-  ( ph  ->  x.  : ( CC 
X.  CC ) --> CC )
13 simpr 448 . . 3  |-  ( (
ph  /\  y  e.  RR+ )  ->  y  e.  RR+ )
148adantr 452 . . 3  |-  ( (
ph  /\  y  e.  RR+ )  ->  D  e.  CC )
1510adantr 452 . . 3  |-  ( (
ph  /\  y  e.  RR+ )  ->  E  e.  CC )
16 mulcn2 12344 . . 3  |-  ( ( y  e.  RR+  /\  D  e.  CC  /\  E  e.  CC )  ->  E. z  e.  RR+  E. w  e.  RR+  A. u  e.  CC  A. v  e.  CC  (
( ( abs `  (
u  -  D ) )  <  z  /\  ( abs `  ( v  -  E ) )  <  w )  -> 
( abs `  (
( u  x.  v
)  -  ( D  x.  E ) ) )  <  y ) )
1713, 14, 15, 16syl3anc 1184 . 2  |-  ( (
ph  /\  y  e.  RR+ )  ->  E. z  e.  RR+  E. w  e.  RR+  A. u  e.  CC  A. v  e.  CC  (
( ( abs `  (
u  -  D ) )  <  z  /\  ( abs `  ( v  -  E ) )  <  w )  -> 
( abs `  (
( u  x.  v
)  -  ( D  x.  E ) ) )  <  y ) )
183, 6, 8, 10, 2, 5, 12, 17rlimcn2 12339 1  |-  ( ph  ->  ( x  e.  A  |->  ( B  x.  C
) )  ~~> r  ( D  x.  E ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 359    e. wcel 1721   A.wral 2666   E.wrex 2667   class class class wbr 4172    e. cmpt 4226    X. cxp 4835   -->wf 5409   ` cfv 5413  (class class class)co 6040   CCcc 8944    x. cmul 8951    < clt 9076    - cmin 9247   RR+crp 10568   abscabs 11994    ~~> r crli 12234
This theorem is referenced by:  rlimdiv  12394  caucvgr  12424  logexprlim  20962  dchrisum0lem1  21163
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1552  ax-5 1563  ax-17 1623  ax-9 1662  ax-8 1683  ax-13 1723  ax-14 1725  ax-6 1740  ax-7 1745  ax-11 1757  ax-12 1946  ax-ext 2385  ax-sep 4290  ax-nul 4298  ax-pow 4337  ax-pr 4363  ax-un 4660  ax-cnex 9002  ax-resscn 9003  ax-1cn 9004  ax-icn 9005  ax-addcl 9006  ax-addrcl 9007  ax-mulcl 9008  ax-mulrcl 9009  ax-mulcom 9010  ax-addass 9011  ax-mulass 9012  ax-distr 9013  ax-i2m1 9014  ax-1ne0 9015  ax-1rid 9016  ax-rnegex 9017  ax-rrecex 9018  ax-cnre 9019  ax-pre-lttri 9020  ax-pre-lttrn 9021  ax-pre-ltadd 9022  ax-pre-mulgt0 9023  ax-pre-sup 9024  ax-mulf 9026
This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3or 937  df-3an 938  df-tru 1325  df-ex 1548  df-nf 1551  df-sb 1656  df-eu 2258  df-mo 2259  df-clab 2391  df-cleq 2397  df-clel 2400  df-nfc 2529  df-ne 2569  df-nel 2570  df-ral 2671  df-rex 2672  df-reu 2673  df-rmo 2674  df-rab 2675  df-v 2918  df-sbc 3122  df-csb 3212  df-dif 3283  df-un 3285  df-in 3287  df-ss 3294  df-pss 3296  df-nul 3589  df-if 3700  df-pw 3761  df-sn 3780  df-pr 3781  df-tp 3782  df-op 3783  df-uni 3976  df-iun 4055  df-br 4173  df-opab 4227  df-mpt 4228  df-tr 4263  df-eprel 4454  df-id 4458  df-po 4463  df-so 4464  df-fr 4501  df-we 4503  df-ord 4544  df-on 4545  df-lim 4546  df-suc 4547  df-om 4805  df-xp 4843  df-rel 4844  df-cnv 4845  df-co 4846  df-dm 4847  df-rn 4848  df-res 4849  df-ima 4850  df-iota 5377  df-fun 5415  df-fn 5416  df-f 5417  df-f1 5418  df-fo 5419  df-f1o 5420  df-fv 5421  df-ov 6043  df-oprab 6044  df-mpt2 6045  df-2nd 6309  df-riota 6508  df-recs 6592  df-rdg 6627  df-er 6864  df-pm 6980  df-en 7069  df-dom 7070  df-sdom 7071  df-sup 7404  df-pnf 9078  df-mnf 9079  df-xr 9080  df-ltxr 9081  df-le 9082  df-sub 9249  df-neg 9250  df-div 9634  df-nn 9957  df-2 10014  df-3 10015  df-n0 10178  df-z 10239  df-uz 10445  df-rp 10569  df-seq 11279  df-exp 11338  df-cj 11859  df-re 11860  df-im 11861  df-sqr 11995  df-abs 11996  df-rlim 12238
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