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Theorem bitsval 12712
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 12710 . . . 4  |- bits  =  ( n  e.  ZZ  |->  { m  e.  NN0  |  -.  2  ||  ( |_
`  ( n  / 
( 2 ^ m
) ) ) } )
21mptrcl 5788 . . 3  |-  ( M  e.  (bits `  N
)  ->  N  e.  ZZ )
3 bitsfval 12711 . . . . 5  |-  ( N  e.  ZZ  ->  (bits `  N )  =  {
m  e.  NN0  |  -.  2  ||  ( |_
`  ( N  / 
( 2 ^ m
) ) ) } )
43eleq2d 2308 . . . 4  |-  ( N  e.  ZZ  ->  ( M  e.  (bits `  N
)  <->  M  e.  { m  e.  NN0  |  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ m ) ) ) } ) )
5 oveq2 6093 . . . . . . . . 9  |-  ( m  =  M  ->  (
2 ^ m )  =  ( 2 ^ M ) )
65oveq2d 6101 . . . . . . . 8  |-  ( m  =  M  ->  ( N  /  ( 2 ^ m ) )  =  ( N  /  (
2 ^ M ) ) )
76fveq2d 5699 . . . . . . 7  |-  ( m  =  M  ->  ( |_ `  ( N  / 
( 2 ^ m
) ) )  =  ( |_ `  ( N  /  ( 2 ^ M ) ) ) )
87breq2d 4142 . . . . . 6  |-  ( m  =  M  ->  (
2  ||  ( |_ `  ( N  /  (
2 ^ m ) ) )  <->  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
98notbid 677 . . . . 5  |-  ( m  =  M  ->  ( -.  2  ||  ( |_
`  ( N  / 
( 2 ^ m
) ) )  <->  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
109elrab 2982 . . . 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 621 . 2  |-  ( M  e.  (bits `  N
)  <->  ( N  e.  ZZ  /\  ( M  e.  NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) ) )
13 3anass 1013 . 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
This proof depends on syntax axioms:   -. wn 3    /\ wa 104    <-> wb 105    /\ w3a 1009    = wceq 1402    e. wcel 2209   {crab 2532   class class class wbr 4130   ` cfv 5377  (class class class)co 6085    / cdiv 9003   2c2 9356   NN0cn0 9565   ZZcz 9646   |_cfl 10705   ^cexp 10977    || cdvds 12556  bitscbits 12709
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-cnex 8270  ax-resscn 8271  ax-1cn 8272  ax-1re 8273  ax-icn 8274  ax-addcl 8275  ax-addrcl 8276  ax-mulcl 8277  ax-i2m1 8284
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fv 5385  df-ov 6088  df-inn 9306  df-n0 9566  df-bits 12710
This theorem is used by:  bitsval2  12713  bitsss  12714  bitsfzo  12724  bitsmod  12725  bitscmp  12727
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