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Theorem decbin2 8617
Description: Decompose base 4 into base 2. (Contributed by Mario Carneiro, 18-Feb-2014.)
Hypothesis
Ref Expression
decbin.1  |-  A  e. 
NN0
Assertion
Ref Expression
decbin2  |-  ( ( 4  x.  A )  +  2 )  =  ( 2  x.  (
( 2  x.  A
)  +  1 ) )

Proof of Theorem decbin2
StepHypRef Expression
1 2t1e2 8185 . . 3  |-  ( 2  x.  1 )  =  2
21oveq2i 5543 . 2  |-  ( ( 2  x.  ( 2  x.  A ) )  +  ( 2  x.  1 ) )  =  ( ( 2  x.  ( 2  x.  A
) )  +  2 )
3 2cn 8110 . . 3  |-  2  e.  CC
4 decbin.1 . . . . 5  |-  A  e. 
NN0
54nn0cni 8300 . . . 4  |-  A  e.  CC
63, 5mulcli 7124 . . 3  |-  ( 2  x.  A )  e.  CC
7 ax-1cn 7069 . . 3  |-  1  e.  CC
83, 6, 7adddii 7129 . 2  |-  ( 2  x.  ( ( 2  x.  A )  +  1 ) )  =  ( ( 2  x.  ( 2  x.  A
) )  +  ( 2  x.  1 ) )
94decbin0 8616 . . 3  |-  ( 4  x.  A )  =  ( 2  x.  (
2  x.  A ) )
109oveq1i 5542 . 2  |-  ( ( 4  x.  A )  +  2 )  =  ( ( 2  x.  ( 2  x.  A
) )  +  2 )
112, 8, 103eqtr4ri 2112 1  |-  ( ( 4  x.  A )  +  2 )  =  ( 2  x.  (
( 2  x.  A
)  +  1 ) )
Colors of variables: wff set class
Syntax hints:    = wceq 1284    e. wcel 1433  (class class class)co 5532   1c1 6982    + caddc 6984    x. cmul 6986   2c2 8089   4c4 8091   NN0cn0 8288
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063  ax-sep 3896  ax-cnex 7067  ax-resscn 7068  ax-1cn 7069  ax-1re 7070  ax-icn 7071  ax-addcl 7072  ax-addrcl 7073  ax-mulcl 7074  ax-mulcom 7077  ax-addass 7078  ax-mulass 7079  ax-distr 7080  ax-1rid 7083  ax-rnegex 7085  ax-cnre 7087
This theorem depends on definitions:  df-bi 115  df-3an 921  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-ral 2353  df-rex 2354  df-v 2603  df-un 2977  df-in 2979  df-ss 2986  df-sn 3404  df-pr 3405  df-op 3407  df-uni 3602  df-int 3637  df-br 3786  df-iota 4887  df-fv 4930  df-ov 5535  df-inn 8040  df-2 8098  df-3 8099  df-4 8100  df-n0 8289
This theorem is referenced by:  decbin3  8618
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