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Theorem bitsval 12565
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 12563 . . . 4  |- bits  =  ( n  e.  ZZ  |->  { m  e.  NN0  |  -.  2  ||  ( |_
`  ( n  / 
( 2 ^ m
) ) ) } )
21mptrcl 5738 . . 3  |-  ( M  e.  (bits `  N
)  ->  N  e.  ZZ )
3 bitsfval 12564 . . . . 5  |-  ( N  e.  ZZ  ->  (bits `  N )  =  {
m  e.  NN0  |  -.  2  ||  ( |_
`  ( N  / 
( 2 ^ m
) ) ) } )
43eleq2d 2301 . . . 4  |-  ( N  e.  ZZ  ->  ( M  e.  (bits `  N
)  <->  M  e.  { m  e.  NN0  |  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ m ) ) ) } ) )
5 oveq2 6036 . . . . . . . . 9  |-  ( m  =  M  ->  (
2 ^ m )  =  ( 2 ^ M ) )
65oveq2d 6044 . . . . . . . 8  |-  ( m  =  M  ->  ( N  /  ( 2 ^ m ) )  =  ( N  /  (
2 ^ M ) ) )
76fveq2d 5652 . . . . . . 7  |-  ( m  =  M  ->  ( |_ `  ( N  / 
( 2 ^ m
) ) )  =  ( |_ `  ( N  /  ( 2 ^ M ) ) ) )
87breq2d 4105 . . . . . 6  |-  ( m  =  M  ->  (
2  ||  ( |_ `  ( N  /  (
2 ^ m ) ) )  <->  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
98notbid 673 . . . . 5  |-  ( m  =  M  ->  ( -.  2  ||  ( |_
`  ( N  / 
( 2 ^ m
) ) )  <->  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) )
109elrab 2963 . . . 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 617 . 2  |-  ( M  e.  (bits `  N
)  <->  ( N  e.  ZZ  /\  ( M  e.  NN0  /\  -.  2  ||  ( |_ `  ( N  /  ( 2 ^ M ) ) ) ) ) )
13 3anass 1009 . 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 1005    = wceq 1398    e. wcel 2202   {crab 2515   class class class wbr 4093   ` cfv 5333  (class class class)co 6028    / cdiv 8895   2c2 9237   NN0cn0 9445   ZZcz 9522   |_cfl 10572   ^cexp 10844    || cdvds 12409  bitscbits 12562
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 2204  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-cnex 8166  ax-resscn 8167  ax-1cn 8168  ax-1re 8169  ax-icn 8170  ax-addcl 8171  ax-addrcl 8172  ax-mulcl 8173  ax-i2m1 8180
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ral 2516  df-rex 2517  df-rab 2520  df-v 2805  df-sbc 3033  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-int 3934  df-br 4094  df-opab 4156  df-mpt 4157  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-ima 4744  df-iota 5293  df-fun 5335  df-fv 5341  df-ov 6031  df-inn 9187  df-n0 9446  df-bits 12563
This theorem is referenced by:  bitsval2  12566  bitsss  12567  bitsfzo  12577  bitsmod  12578  bitscmp  12580
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