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Theorem dvdsmulgcd 12676
Description: Relationship between the order of an element and that of a multiple. (a divisibility equivalent). (Contributed by Stefan O'Rear, 6-Sep-2015.)
Assertion
Ref Expression
dvdsmulgcd  |-  ( ( B  e.  ZZ  /\  C  e.  ZZ )  ->  ( A  ||  ( B  x.  C )  <->  A 
||  ( B  x.  ( C  gcd  A ) ) ) )

Proof of Theorem dvdsmulgcd
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 simplr 529 . . . 4  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C )
)  ->  C  e.  ZZ )
2 dvdszrcl 12433 . . . . . 6  |-  ( A 
||  ( B  x.  C )  ->  ( A  e.  ZZ  /\  ( B  x.  C )  e.  ZZ ) )
32adantl 277 . . . . 5  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C )
)  ->  ( A  e.  ZZ  /\  ( B  x.  C )  e.  ZZ ) )
43simpld 112 . . . 4  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C )
)  ->  A  e.  ZZ )
5 bezout 12662 . . . 4  |-  ( ( C  e.  ZZ  /\  A  e.  ZZ )  ->  E. x  e.  ZZ  E. y  e.  ZZ  ( C  gcd  A )  =  ( ( C  x.  x )  +  ( A  x.  y ) ) )
61, 4, 5syl2anc 411 . . 3  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C )
)  ->  E. x  e.  ZZ  E. y  e.  ZZ  ( C  gcd  A )  =  ( ( C  x.  x )  +  ( A  x.  y ) ) )
74adantr 276 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  e.  ZZ )
8 simplll 535 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  B  e.  ZZ )
9 simpllr 536 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  C  e.  ZZ )
10 simprl 531 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  x  e.  ZZ )
119, 10zmulcld 9669 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( C  x.  x )  e.  ZZ )
128, 11zmulcld 9669 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  ( C  x.  x
) )  e.  ZZ )
13 simprr 533 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  y  e.  ZZ )
147, 13zmulcld 9669 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( A  x.  y )  e.  ZZ )
158, 14zmulcld 9669 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  ( A  x.  y
) )  e.  ZZ )
16 simplr 529 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  ||  ( B  x.  C )
)
178, 9zmulcld 9669 . . . . . . . . . 10  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  C )  e.  ZZ )
18 dvdsmultr1 12472 . . . . . . . . . 10  |-  ( ( A  e.  ZZ  /\  ( B  x.  C
)  e.  ZZ  /\  x  e.  ZZ )  ->  ( A  ||  ( B  x.  C )  ->  A  ||  ( ( B  x.  C )  x.  x ) ) )
197, 17, 10, 18syl3anc 1274 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( A  ||  ( B  x.  C
)  ->  A  ||  (
( B  x.  C
)  x.  x ) ) )
2016, 19mpd 13 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  ||  (
( B  x.  C
)  x.  x ) )
218zcnd 9664 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  B  e.  CC )
229zcnd 9664 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  C  e.  CC )
2310zcnd 9664 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  x  e.  CC )
2421, 22, 23mulassd 8262 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( ( B  x.  C )  x.  x )  =  ( B  x.  ( C  x.  x ) ) )
2520, 24breqtrd 4119 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  ||  ( B  x.  ( C  x.  x ) ) )
268, 13zmulcld 9669 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  y )  e.  ZZ )
27 dvdsmul1 12454 . . . . . . . . 9  |-  ( ( A  e.  ZZ  /\  ( B  x.  y
)  e.  ZZ )  ->  A  ||  ( A  x.  ( B  x.  y ) ) )
287, 26, 27syl2anc 411 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  ||  ( A  x.  ( B  x.  y ) ) )
297zcnd 9664 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  e.  CC )
3013zcnd 9664 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  y  e.  CC )
3121, 29, 30mul12d 8390 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  ( A  x.  y
) )  =  ( A  x.  ( B  x.  y ) ) )
3228, 31breqtrrd 4121 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  ||  ( B  x.  ( A  x.  y ) ) )
33 dvds2add 12466 . . . . . . . 8  |-  ( ( A  e.  ZZ  /\  ( B  x.  ( C  x.  x )
)  e.  ZZ  /\  ( B  x.  ( A  x.  y )
)  e.  ZZ )  ->  ( ( A 
||  ( B  x.  ( C  x.  x
) )  /\  A  ||  ( B  x.  ( A  x.  y )
) )  ->  A  ||  ( ( B  x.  ( C  x.  x
) )  +  ( B  x.  ( A  x.  y ) ) ) ) )
3433imp 124 . . . . . . 7  |-  ( ( ( A  e.  ZZ  /\  ( B  x.  ( C  x.  x )
)  e.  ZZ  /\  ( B  x.  ( A  x.  y )
)  e.  ZZ )  /\  ( A  ||  ( B  x.  ( C  x.  x )
)  /\  A  ||  ( B  x.  ( A  x.  y ) ) ) )  ->  A  ||  (
( B  x.  ( C  x.  x )
)  +  ( B  x.  ( A  x.  y ) ) ) )
357, 12, 15, 25, 32, 34syl32anc 1282 . . . . . 6  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  ||  (
( B  x.  ( C  x.  x )
)  +  ( B  x.  ( A  x.  y ) ) ) )
3611zcnd 9664 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( C  x.  x )  e.  CC )
3714zcnd 9664 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( A  x.  y )  e.  CC )
3821, 36, 37adddid 8263 . . . . . 6  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  ( ( C  x.  x )  +  ( A  x.  y ) ) )  =  ( ( B  x.  ( C  x.  x )
)  +  ( B  x.  ( A  x.  y ) ) ) )
3935, 38breqtrrd 4121 . . . . 5  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  ||  ( B  x.  ( ( C  x.  x )  +  ( A  x.  y ) ) ) )
40 oveq2 6036 . . . . . 6  |-  ( ( C  gcd  A )  =  ( ( C  x.  x )  +  ( A  x.  y
) )  ->  ( B  x.  ( C  gcd  A ) )  =  ( B  x.  (
( C  x.  x
)  +  ( A  x.  y ) ) ) )
4140breq2d 4105 . . . . 5  |-  ( ( C  gcd  A )  =  ( ( C  x.  x )  +  ( A  x.  y
) )  ->  ( A  ||  ( B  x.  ( C  gcd  A ) )  <->  A  ||  ( B  x.  ( ( C  x.  x )  +  ( A  x.  y
) ) ) ) )
4239, 41syl5ibrcom 157 . . . 4  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( ( C  gcd  A )  =  ( ( C  x.  x )  +  ( A  x.  y ) )  ->  A  ||  ( B  x.  ( C  gcd  A ) ) ) )
4342rexlimdvva 2659 . . 3  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C )
)  ->  ( E. x  e.  ZZ  E. y  e.  ZZ  ( C  gcd  A )  =  ( ( C  x.  x )  +  ( A  x.  y ) )  ->  A  ||  ( B  x.  ( C  gcd  A ) ) ) )
446, 43mpd 13 . 2  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C )
)  ->  A  ||  ( B  x.  ( C  gcd  A ) ) )
45 dvdszrcl 12433 . . . . 5  |-  ( A 
||  ( B  x.  ( C  gcd  A ) )  ->  ( A  e.  ZZ  /\  ( B  x.  ( C  gcd  A ) )  e.  ZZ ) )
4645adantl 277 . . . 4  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( A  e.  ZZ  /\  ( B  x.  ( C  gcd  A ) )  e.  ZZ ) )
4746simpld 112 . . 3  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  A  e.  ZZ )
4846simprd 114 . . 3  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( B  x.  ( C  gcd  A ) )  e.  ZZ )
49 zmulcl 9594 . . . 4  |-  ( ( B  e.  ZZ  /\  C  e.  ZZ )  ->  ( B  x.  C
)  e.  ZZ )
5049adantr 276 . . 3  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( B  x.  C )  e.  ZZ )
51 simpr 110 . . 3  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  A  ||  ( B  x.  ( C  gcd  A ) ) )
52 simplr 529 . . . . . 6  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  C  e.  ZZ )
53 gcddvds 12614 . . . . . 6  |-  ( ( C  e.  ZZ  /\  A  e.  ZZ )  ->  ( ( C  gcd  A )  ||  C  /\  ( C  gcd  A ) 
||  A ) )
5452, 47, 53syl2anc 411 . . . . 5  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( ( C  gcd  A )  ||  C  /\  ( C  gcd  A )  ||  A ) )
5554simpld 112 . . . 4  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( C  gcd  A )  ||  C )
5652, 47gcdcld 12619 . . . . . 6  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( C  gcd  A )  e.  NN0 )
5756nn0zd 9661 . . . . 5  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( C  gcd  A )  e.  ZZ )
58 simpll 527 . . . . 5  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  B  e.  ZZ )
59 dvdscmul 12459 . . . . 5  |-  ( ( ( C  gcd  A
)  e.  ZZ  /\  C  e.  ZZ  /\  B  e.  ZZ )  ->  (
( C  gcd  A
)  ||  C  ->  ( B  x.  ( C  gcd  A ) ) 
||  ( B  x.  C ) ) )
6057, 52, 58, 59syl3anc 1274 . . . 4  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( ( C  gcd  A )  ||  C  ->  ( B  x.  ( C  gcd  A ) )  ||  ( B  x.  C ) ) )
6155, 60mpd 13 . . 3  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( B  x.  ( C  gcd  A ) )  ||  ( B  x.  C ) )
62 dvdstr 12469 . . . 4  |-  ( ( A  e.  ZZ  /\  ( B  x.  ( C  gcd  A ) )  e.  ZZ  /\  ( B  x.  C )  e.  ZZ )  ->  (
( A  ||  ( B  x.  ( C  gcd  A ) )  /\  ( B  x.  ( C  gcd  A ) ) 
||  ( B  x.  C ) )  ->  A  ||  ( B  x.  C ) ) )
6362imp 124 . . 3  |-  ( ( ( A  e.  ZZ  /\  ( B  x.  ( C  gcd  A ) )  e.  ZZ  /\  ( B  x.  C )  e.  ZZ )  /\  ( A  ||  ( B  x.  ( C  gcd  A ) )  /\  ( B  x.  ( C  gcd  A ) )  ||  ( B  x.  C )
) )  ->  A  ||  ( B  x.  C
) )
6447, 48, 50, 51, 61, 63syl32anc 1282 . 2  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  A  ||  ( B  x.  C )
)
6544, 64impbida 600 1  |-  ( ( B  e.  ZZ  /\  C  e.  ZZ )  ->  ( A  ||  ( B  x.  C )  <->  A 
||  ( B  x.  ( C  gcd  A ) ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    /\ w3a 1005    = wceq 1398    e. wcel 2202   E.wrex 2512   class class class wbr 4093  (class class class)co 6028    + caddc 8095    x. cmul 8097   ZZcz 9540    || cdvds 12428    gcd cgcd 12604
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-coll 4209  ax-sep 4212  ax-nul 4220  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641  ax-iinf 4692  ax-cnex 8183  ax-resscn 8184  ax-1cn 8185  ax-1re 8186  ax-icn 8187  ax-addcl 8188  ax-addrcl 8189  ax-mulcl 8190  ax-mulrcl 8191  ax-addcom 8192  ax-mulcom 8193  ax-addass 8194  ax-mulass 8195  ax-distr 8196  ax-i2m1 8197  ax-0lt1 8198  ax-1rid 8199  ax-0id 8200  ax-rnegex 8201  ax-precex 8202  ax-cnre 8203  ax-pre-ltirr 8204  ax-pre-ltwlin 8205  ax-pre-lttrn 8206  ax-pre-apti 8207  ax-pre-ltadd 8208  ax-pre-mulgt0 8209  ax-pre-mulext 8210  ax-arch 8211  ax-caucvg 8212
This theorem depends on definitions:  df-bi 117  df-dc 843  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  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-ne 2404  df-nel 2499  df-ral 2516  df-rex 2517  df-reu 2518  df-rmo 2519  df-rab 2520  df-v 2805  df-sbc 3033  df-csb 3129  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-nul 3497  df-if 3608  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-int 3934  df-iun 3977  df-br 4094  df-opab 4156  df-mpt 4157  df-tr 4193  df-id 4396  df-po 4399  df-iso 4400  df-iord 4469  df-on 4471  df-ilim 4472  df-suc 4474  df-iom 4695  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-fn 5336  df-f 5337  df-f1 5338  df-fo 5339  df-f1o 5340  df-fv 5341  df-riota 5981  df-ov 6031  df-oprab 6032  df-mpo 6033  df-1st 6312  df-2nd 6313  df-recs 6514  df-frec 6600  df-sup 7243  df-pnf 8275  df-mnf 8276  df-xr 8277  df-ltxr 8278  df-le 8279  df-sub 8411  df-neg 8412  df-reap 8814  df-ap 8821  df-div 8912  df-inn 9203  df-2 9261  df-3 9262  df-4 9263  df-n0 9462  df-z 9541  df-uz 9817  df-q 9915  df-rp 9950  df-fz 10306  df-fzo 10440  df-fl 10593  df-mod 10648  df-seqfrec 10773  df-exp 10864  df-cj 11482  df-re 11483  df-im 11484  df-rsqrt 11638  df-abs 11639  df-dvds 12429  df-gcd 12605
This theorem is referenced by:  coprmdvds  12744
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