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Theorem modmulconst 10921
Description: Constant multiplication in a modulo operation, see theorem 5.3 in [ApostolNT] p. 108. (Contributed by AV, 21-Jul-2021.)
Assertion
Ref Expression
modmulconst |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( ( A mod M ) = ( B mod M ) <-> ( ( C x. A ) mod ( C x. M ) ) = ( ( C x. B ) mod ( C x. M ) ) ) )
Proof of Theorem modmulconst
StepHypRef Expression
1 nnz 8739 . . . . 5 |- ( M e. NN -> M e. ZZ )
21adantl 271 . . . 4 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> M e. ZZ )
3 zsubcl 8761 . . . . . 6 |- ( ( A e. ZZ /\ B e. ZZ ) -> ( A - B ) e. ZZ )
433adant3 963 . . . . 5 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> ( A - B ) e. ZZ )
54adantr 270 . . . 4 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( A - B ) e. ZZ )
6 nnz 8739 . . . . . . 7 |- ( C e. NN -> C e. ZZ )
7 nnne0 8422 . . . . . . 7 |- ( C e. NN -> C =/= 0 )
86, 7jca 300 . . . . . 6 |- ( C e. NN -> ( C e. ZZ /\ C =/= 0 ) )
983ad2ant3 966 . . . . 5 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> ( C e. ZZ /\ C =/= 0 ) )
109adantr 270 . . . 4 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( C e. ZZ /\ C =/= 0 ) )
11 dvdscmulr 10918 . . . . 5 |- ( ( M e. ZZ /\ ( A - B ) e. ZZ /\ ( C e. ZZ /\ C =/= 0 ) ) -> ( ( C x. M ) || ( C x. ( A - B ) ) <-> M || ( A - B ) ) )
1211bicomd 139 . . . 4 |- ( ( M e. ZZ /\ ( A - B ) e. ZZ /\ ( C e. ZZ /\ C =/= 0 ) ) -> ( M || ( A - B ) <-> ( C x. M ) || ( C x. ( A - B ) ) ) )
132, 5, 10, 12syl3anc 1174 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( M || ( A - B ) <-> ( C x. M ) || ( C x. ( A - B ) ) ) )
14 zcn 8725 . . . . . . . 8 |- ( A e. ZZ -> A e. CC )
15 zcn 8725 . . . . . . . 8 |- ( B e. ZZ -> B e. CC )
16 nncn 8402 . . . . . . . 8 |- ( C e. NN -> C e. CC )
1714, 15, 163anim123i 1128 . . . . . . 7 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> ( A e. CC /\ B e. CC /\ C e. CC ) )
18 3anrot 929 . . . . . . 7 |- ( ( C e. CC /\ A e. CC /\ B e. CC ) <-> ( A e. CC /\ B e. CC /\ C e. CC ) )
1917, 18sylibr 132 . . . . . 6 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> ( C e. CC /\ A e. CC /\ B e. CC ) )
20 subdi 7842 . . . . . 6 |- ( ( C e. CC /\ A e. CC /\ B e. CC ) -> ( C x. ( A - B ) ) = ( ( C x. A ) - ( C x. B ) ) )
2119, 20syl 14 . . . . 5 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> ( C x. ( A - B ) ) = ( ( C x. A ) - ( C x. B ) ) )
2221adantr 270 . . . 4 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( C x. ( A - B ) ) = ( ( C x. A ) - ( C x. B ) ) )
2322breq2d 3849 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( ( C x. M ) || ( C x. ( A - B ) ) <-> ( C x. M ) || ( ( C x. A ) - ( C x. B ) ) ) )
2413, 23bitrd 186 . 2 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( M || ( A - B ) <-> ( C x. M ) || ( ( C x. A ) - ( C x. B ) ) ) )
25 simpr 108 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> M e. NN )
26 simp1 943 . . . 4 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> A e. ZZ )
2726adantr 270 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> A e. ZZ )
28 simp2 944 . . . 4 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> B e. ZZ )
2928adantr 270 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> B e. ZZ )
30 moddvds 10898 . . 3 |- ( ( M e. NN /\ A e. ZZ /\ B e. ZZ ) -> ( ( A mod M ) = ( B mod M ) <-> M || ( A - B ) ) )
3125, 27, 29, 30syl3anc 1174 . 2 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( ( A mod M ) = ( B mod M ) <-> M || ( A - B ) ) )
32 simpl3 948 . . . 4 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> C e. NN )
3332, 25nnmulcld 8442 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( C x. M ) e. NN )
3463ad2ant3 966 . . . . 5 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> C e. ZZ )
3534, 26zmulcld 8844 . . . 4 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> ( C x. A ) e. ZZ )
3635adantr 270 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( C x. A ) e. ZZ )
3734, 28zmulcld 8844 . . . 4 |- ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) -> ( C x. B ) e. ZZ )
3837adantr 270 . . 3 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( C x. B ) e. ZZ )
39 moddvds 10898 . . 3 |- ( ( ( C x. M ) e. NN /\ ( C x. A ) e. ZZ /\ ( C x. B ) e. ZZ ) -> ( ( ( C x. A ) mod ( C x. M ) ) = ( ( C x. B ) mod ( C x. M ) ) <-> ( C x. M ) || ( ( C x. A ) - ( C x. B ) ) ) )
4033, 36, 38, 39syl3anc 1174 . 2 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( ( ( C x. A ) mod ( C x. M ) ) = ( ( C x. B ) mod ( C x. M ) ) <-> ( C x. M ) || ( ( C x. A ) - ( C x. B ) ) ) )
4124, 31, 403bitr4d 218 1 |- ( ( ( A e. ZZ /\ B e. ZZ /\ C e. NN ) /\ M e. NN ) -> ( ( A mod M ) = ( B mod M ) <-> ( ( C x. A ) mod ( C x. M ) ) = ( ( C x. B ) mod ( C x. M ) ) ) )
Colors of variables: wff set class
Syntax hints:   -> wi 4   /\ wa 102   <-> wb 103   /\ w3a 924   = wceq 1289   e. wcel 1438   =/= wne 2255   class class class wbr 3837  (class class class)co 5634   CCcc 7327   0cc0 7329   x. cmul 7334   - cmin 7632   NNcn 8394   ZZcz 8720   mod cmo 9694   || cdvds 10889
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-in1 579  ax-in2 580  ax-io 665  ax-5 1381  ax-7 1382  ax-gen 1383  ax-ie1 1427  ax-ie2 1428  ax-8 1440  ax-10 1441  ax-11 1442  ax-i12 1443  ax-bndl 1444  ax-4 1445  ax-13 1449  ax-14 1450  ax-17 1464  ax-i9 1468  ax-ial 1472  ax-i5r 1473  ax-ext 2070  ax-sep 3949  ax-pow 4001  ax-pr 4027  ax-un 4251  ax-setind 4343  ax-cnex 7415  ax-resscn 7416  ax-1cn 7417  ax-1re 7418  ax-icn 7419  ax-addcl 7420  ax-addrcl 7421  ax-mulcl 7422  ax-mulrcl 7423  ax-addcom 7424  ax-mulcom 7425  ax-addass 7426  ax-mulass 7427  ax-distr 7428  ax-i2m1 7429  ax-0lt1 7430  ax-1rid 7431  ax-0id 7432  ax-rnegex 7433  ax-precex 7434  ax-cnre 7435  ax-pre-ltirr 7436  ax-pre-ltwlin 7437  ax-pre-lttrn 7438  ax-pre-apti 7439  ax-pre-ltadd 7440  ax-pre-mulgt0 7441  ax-pre-mulext 7442  ax-arch 7443
This theorem depends on definitions:  df-bi 115  df-3or 925  df-3an 926  df-tru 1292  df-fal 1295  df-nf 1395  df-sb 1693  df-eu 1951  df-mo 1952  df-clab 2075  df-cleq 2081  df-clel 2084  df-nfc 2217  df-ne 2256  df-nel 2351  df-ral 2364  df-rex 2365  df-reu 2366  df-rmo 2367  df-rab 2368  df-v 2621  df-sbc 2839  df-csb 2932  df-dif 2999  df-un 3001  df-in 3003  df-ss 3010  df-pw 3427  df-sn 3447  df-pr 3448  df-op 3450  df-uni 3649  df-int 3684  df-iun 3727  df-br 3838  df-opab 3892  df-mpt 3893  df-id 4111  df-po 4114  df-iso 4115  df-xp 4434  df-rel 4435  df-cnv 4436  df-co 4437  df-dm 4438  df-rn 4439  df-res 4440  df-ima 4441  df-iota 4967  df-fun 5004  df-fn 5005  df-f 5006  df-fv 5010  df-riota 5590  df-ov 5637  df-oprab 5638  df-mpt2 5639  df-1st 5893  df-2nd 5894  df-pnf 7503  df-mnf 7504  df-xr 7505  df-ltxr 7506  df-le 7507  df-sub 7634  df-neg 7635  df-reap 8028  df-ap 8035  df-div 8114  df-inn 8395  df-n0 8644  df-z 8721  df-q 9074  df-rp 9104  df-fl 9642  df-mod 9695  df-dvds 10890
This theorem is referenced by: (None)
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