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Theorem dvdsmulgcd 12725
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 12482 . . . . . 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 12711 . . . 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 9709 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( C  x.  x )  e.  ZZ )
128, 11zmulcld 9709 . . . . . . 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 9709 . . . . . . . 8  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( A  x.  y )  e.  ZZ )
158, 14zmulcld 9709 . . . . . . 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 9709 . . . . . . . . . 10  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  C )  e.  ZZ )
18 dvdsmultr1 12521 . . . . . . . . . 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 9704 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  B  e.  CC )
229zcnd 9704 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  C  e.  CC )
2310zcnd 9704 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  x  e.  CC )
2421, 22, 23mulassd 8299 . . . . . . . 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 4137 . . . . . . 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 9709 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( B  x.  y )  e.  ZZ )
27 dvdsmul1 12503 . . . . . . . . 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 9704 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  A  e.  CC )
3013zcnd 9704 . . . . . . . . 9  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  y  e.  CC )
3121, 29, 30mul12d 8427 . . . . . . . 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 4139 . . . . . . 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 12515 . . . . . . . 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 9704 . . . . . . 7  |-  ( ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  C
) )  /\  (
x  e.  ZZ  /\  y  e.  ZZ )
)  ->  ( C  x.  x )  e.  CC )
3714zcnd 9704 . . . . . . 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 8300 . . . . . 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 4139 . . . . 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 6060 . . . . . 6  |-  ( ( C  gcd  A )  =  ( ( C  x.  x )  +  ( A  x.  y
) )  ->  ( B  x.  ( C  gcd  A ) )  =  ( B  x.  (
( C  x.  x
)  +  ( A  x.  y ) ) ) )
4140breq2d 4123 . . . . 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 2670 . . 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 12482 . . . . 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 9633 . . . 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 12663 . . . . . 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 12668 . . . . . 6  |-  ( ( ( B  e.  ZZ  /\  C  e.  ZZ )  /\  A  ||  ( B  x.  ( C  gcd  A ) ) )  ->  ( C  gcd  A )  e.  NN0 )
5756nn0zd 9701 . . . . 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 12508 . . . . 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 12518 . . . 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 2205   E.wrex 2523   class class class wbr 4111  (class class class)co 6052    + caddc 8132    x. cmul 8134   ZZcz 9579    || cdvds 12477    gcd cgcd 12653
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 2207  ax-14 2208  ax-ext 2216  ax-coll 4227  ax-sep 4230  ax-nul 4238  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-iinf 4712  ax-cnex 8220  ax-resscn 8221  ax-1cn 8222  ax-1re 8223  ax-icn 8224  ax-addcl 8225  ax-addrcl 8226  ax-mulcl 8227  ax-mulrcl 8228  ax-addcom 8229  ax-mulcom 8230  ax-addass 8231  ax-mulass 8232  ax-distr 8233  ax-i2m1 8234  ax-0lt1 8235  ax-1rid 8236  ax-0id 8237  ax-rnegex 8238  ax-precex 8239  ax-cnre 8240  ax-pre-ltirr 8241  ax-pre-ltwlin 8242  ax-pre-lttrn 8243  ax-pre-apti 8244  ax-pre-ltadd 8245  ax-pre-mulgt0 8246  ax-pre-mulext 8247  ax-arch 8248  ax-caucvg 8249
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 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rmo 2530  df-rab 2531  df-v 2817  df-sbc 3045  df-csb 3141  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-if 3623  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-iun 3995  df-br 4112  df-opab 4174  df-mpt 4175  df-tr 4211  df-id 4416  df-po 4419  df-iso 4420  df-iord 4489  df-on 4491  df-ilim 4492  df-suc 4494  df-iom 4715  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-ima 4764  df-iota 5314  df-fun 5356  df-fn 5357  df-f 5358  df-f1 5359  df-fo 5360  df-f1o 5361  df-fv 5362  df-riota 6005  df-ov 6055  df-oprab 6056  df-mpo 6057  df-1st 6336  df-2nd 6337  df-recs 6538  df-frec 6624  df-sup 7277  df-pnf 8312  df-mnf 8313  df-xr 8314  df-ltxr 8315  df-le 8316  df-sub 8448  df-neg 8449  df-reap 8851  df-ap 8858  df-div 8949  df-inn 9240  df-2 9298  df-3 9299  df-4 9300  df-n0 9499  df-z 9580  df-uz 9857  df-q 9955  df-rp 9990  df-fz 10346  df-fzo 10481  df-fl 10634  df-mod 10689  df-seqfrec 10814  df-exp 10905  df-cj 11531  df-re 11532  df-im 11533  df-rsqrt 11687  df-abs 11688  df-dvds 12478  df-gcd 12654
This theorem is referenced by:  coprmdvds  12793
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