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Theorem bitsval 12497
Description: Expand the definition of the bits of an integer. (Contributed by Mario Carneiro, 5-Sep-2016.)
Assertion
Ref Expression
bitsval  |-  ( M  e.  (bits `  N
)  <->  ( N  e.  ZZ  /\  M  e. 
NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )

Proof of Theorem bitsval
Dummy variables  n  m are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-bits 12495 . . . 4  |- bits  =  ( n  e.  ZZ  |->  { m  e.  NN0  |  -.  2  ||  ( |_
`  ( n  / 
( 2 ^ m
) ) ) } )
21mptrcl 5725 . . 3  |-  ( M  e.  (bits `  N
)  ->  N  e.  ZZ )
3 bitsfval 12496 . . . . 5  |-  ( N  e.  ZZ  ->  (bits `  N )  =  {
m  e.  NN0  |  -.  2  ||  ( |_
`  ( N  / 
( 2 ^ m
) ) ) } )
43eleq2d 2299 . . . 4  |-  ( N  e.  ZZ  ->  ( M  e.  (bits `  N
)  <->  M  e.  { m  e.  NN0  |  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ m ) ) ) } ) )
5 oveq2 6021 . . . . . . . . 9  |-  ( m  =  M  ->  (
2 ^ m )  =  ( 2 ^ M ) )
65oveq2d 6029 . . . . . . . 8  |-  ( m  =  M  ->  ( N  /  ( 2 ^ m ) )  =  ( N  /  (
2 ^ M ) ) )
76fveq2d 5639 . . . . . . 7  |-  ( m  =  M  ->  ( |_ `  ( N  / 
( 2 ^ m
) ) )  =  ( |_ `  ( N  /  ( 2 ^ M ) ) ) )
87breq2d 4098 . . . . . 6  |-  ( m  =  M  ->  (
2  ||  ( |_ `  ( N  /  (
2 ^ m ) ) )  <->  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
98notbid 671 . . . . 5  |-  ( m  =  M  ->  ( -.  2  ||  ( |_
`  ( N  / 
( 2 ^ m
) ) )  <->  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
109elrab 2960 . . . 4  |-  ( M  e.  { m  e. 
NN0  |  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ m ) ) ) }  <->  ( M  e. 
NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
114, 10bitrdi 196 . . 3  |-  ( N  e.  ZZ  ->  ( M  e.  (bits `  N
)  <->  ( M  e. 
NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) ) )
122, 11biadanii 615 . 2  |-  ( M  e.  (bits `  N
)  <->  ( N  e.  ZZ  /\  ( M  e.  NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) ) )
13 3anass 1006 . 2  |-  ( ( N  e.  ZZ  /\  M  e.  NN0  /\  -.  2  ||  ( |_ `  ( N  /  (
2 ^ M ) ) ) )  <->  ( N  e.  ZZ  /\  ( M  e.  NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) ) )
1412, 13bitr4i 187 1  |-  ( M  e.  (bits `  N
)  <->  ( N  e.  ZZ  /\  M  e. 
NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
Colors of variables: wff set class
Syntax hints:   -. wn 3    /\ wa 104    <-> wb 105    /\ w3a 1002    = wceq 1395    e. wcel 2200   {crab 2512   class class class wbr 4086   ` cfv 5324  (class class class)co 6013    / cdiv 8845   2c2 9187   NN0cn0 9395   ZZcz 9472   |_cfl 10521   ^cexp 10793    || cdvds 12341  bitscbits 12494
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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4205  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-cnex 8116  ax-resscn 8117  ax-1cn 8118  ax-1re 8119  ax-icn 8120  ax-addcl 8121  ax-addrcl 8122  ax-mulcl 8123  ax-i2m1 8130
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2802  df-sbc 3030  df-un 3202  df-in 3204  df-ss 3211  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-int 3927  df-br 4087  df-opab 4149  df-mpt 4150  df-id 4388  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-res 4735  df-ima 4736  df-iota 5284  df-fun 5326  df-fv 5332  df-ov 6016  df-inn 9137  df-n0 9396  df-bits 12495
This theorem is referenced by:  bitsval2  12498  bitsss  12499  bitsfzo  12509  bitsmod  12510  bitscmp  12512
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