Theorem bitsval 12440

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.

Step	Hyp	Ref	Expression
1		df-bits 12438	. . . 4 |- bits = ( n e. ZZ |-> { m e. NN0 | -. 2 || ( |_ ` ( n / ( 2 ^ m ) ) ) } )
2	1	mptrcl 5710	. . 3 |- ( M e. (bits ` N ) -> N e. ZZ )
3		bitsfval 12439	. . . . 5 |- ( N e. ZZ -> (bits ` N ) = { m e. NN0 | -. 2 || ( |_ ` ( N / ( 2 ^ m ) ) ) } )
4	3	eleq2d 2299	. . . 4 |- ( N e. ZZ -> ( M e. (bits ` N ) <-> M e. { m e. NN0 | -. 2 || ( |_ ` ( N / ( 2 ^ m ) ) ) } ) )
5		oveq2 6002	. . . . . . . . 9 |- ( m = M -> ( 2 ^ m ) = ( 2 ^ M ) )
6	5	oveq2d 6010	. . . . . . . 8 |- ( m = M -> ( N / ( 2 ^ m ) ) = ( N / ( 2 ^ M ) ) )
7	6	fveq2d 5627	. . . . . . 7 |- ( m = M -> ( |_ ` ( N / ( 2 ^ m ) ) ) = ( |_ ` ( N / ( 2 ^ M ) ) ) )
8	7	breq2d 4094	. . . . . 6 |- ( m = M -> ( 2 || ( |_ ` ( N / ( 2 ^ m ) ) ) <-> 2 || ( |_ ` ( N / ( 2 ^ M ) ) ) ) )
9	8	notbid 671	. . . . 5 |- ( m = M -> ( -. 2 || ( |_ ` ( N / ( 2 ^ m ) ) ) <-> -. 2 || ( |_ ` ( N / ( 2 ^ M ) ) ) ) )
10	9	elrab 2959	. . . 4 |- ( M e. { m e. NN0 | -. 2 || ( |_ ` ( N / ( 2 ^ m ) ) ) } <-> ( M e. NN0 /\ -. 2 || ( |_ ` ( N / ( 2 ^ M ) ) ) ) )
11	4, 10	bitrdi 196	. . 3 |- ( N e. ZZ -> ( M e. (bits ` N ) <-> ( M e. NN0 /\ -. 2 || ( |_ ` ( N / ( 2 ^ M ) ) ) ) ) )
12	2, 11	biadanii 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 ) ) ) ) ) )
14	12, 13	bitr4i 187	1 |- ( M e. (bits ` N ) <-> ( N e. ZZ /\ M e. NN0 /\ -. 2 || ( |_ ` ( N / ( 2 ^ M ) ) ) ) )

Syntax hints:   -. wn 3   /\ wa 104   <-> wb 105   /\ w3a 1002   = wceq 1395   e. wcel 2200   {crab 2512   class class class wbr 4082   ` cfv 5314  (class class class)co 5994   / cdiv 8807   2c2 9149   NN0cn0 9357   ZZcz 9434   |_cfl 10475   ^cexp 10747   || cdvds 12284  bitscbits 12437

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 4201  ax-pow 4257  ax-pr 4292  ax-un 4521  ax-cnex 8078  ax-resscn 8079  ax-1cn 8080  ax-1re 8081  ax-icn 8082  ax-addcl 8083  ax-addrcl 8084  ax-mulcl 8085  ax-i2m1 8092

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 2801  df-sbc 3029  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3888  df-int 3923  df-br 4083  df-opab 4145  df-mpt 4146  df-id 4381  df-xp 4722  df-rel 4723  df-cnv 4724  df-co 4725  df-dm 4726  df-rn 4727  df-res 4728  df-ima 4729  df-iota 5274  df-fun 5316  df-fv 5322  df-ov 5997  df-inn 9099  df-n0 9358  df-bits 12438

This theorem is referenced by:  bitsval2  12441  bitsss  12442  bitsfzo  12452  bitsmod  12453  bitscmp  12455