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Theorem modaddmodlo 10161
Description: The sum of an integer modulo a positive integer and another integer equals the sum of the two integers modulo the positive integer if the other integer is in the lower part of the range between 0 and the positive integer. (Contributed by AV, 30-Oct-2018.)
Assertion
Ref Expression
modaddmodlo  |-  ( ( A  e.  ZZ  /\  M  e.  NN )  ->  ( B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) )  ->  ( B  +  ( A  mod  M ) )  =  ( ( B  +  A )  mod  M
) ) )

Proof of Theorem modaddmodlo
StepHypRef Expression
1 elfzoelz 9924 . . . . . . 7  |-  ( B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) )  ->  B  e.  ZZ )
21adantl 275 . . . . . 6  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  B  e.  ZZ )
3 zq 9418 . . . . . 6  |-  ( B  e.  ZZ  ->  B  e.  QQ )
42, 3syl 14 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  B  e.  QQ )
5 zmodcl 10117 . . . . . . . 8  |-  ( ( A  e.  ZZ  /\  M  e.  NN )  ->  ( A  mod  M
)  e.  NN0 )
65adantr 274 . . . . . . 7  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( A  mod  M
)  e.  NN0 )
76nn0zd 9171 . . . . . 6  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( A  mod  M
)  e.  ZZ )
8 zq 9418 . . . . . 6  |-  ( ( A  mod  M )  e.  ZZ  ->  ( A  mod  M )  e.  QQ )
97, 8syl 14 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( A  mod  M
)  e.  QQ )
10 qaddcl 9427 . . . . 5  |-  ( ( B  e.  QQ  /\  ( A  mod  M )  e.  QQ )  -> 
( B  +  ( A  mod  M ) )  e.  QQ )
114, 9, 10syl2anc 408 . . . 4  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( B  +  ( A  mod  M ) )  e.  QQ )
12 simplr 519 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  M  e.  NN )
13 nnq 9425 . . . . 5  |-  ( M  e.  NN  ->  M  e.  QQ )
1412, 13syl 14 . . . 4  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  M  e.  QQ )
152zred 9173 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  B  e.  RR )
166nn0red 9031 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( A  mod  M
)  e.  RR )
17 elfzole1 9932 . . . . . 6  |-  ( B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) )  ->  0  <_  B )
1817adantl 275 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
0  <_  B )
196nn0ge0d 9033 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
0  <_  ( A  mod  M ) )
2015, 16, 18, 19addge0d 8284 . . . 4  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
0  <_  ( B  +  ( A  mod  M ) ) )
21 elfzolt2 9933 . . . . . 6  |-  ( B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) )  ->  B  <  ( M  -  ( A  mod  M ) ) )
2221adantl 275 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  B  <  ( M  -  ( A  mod  M ) ) )
2312nnred 8733 . . . . . 6  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  M  e.  RR )
2415, 16, 23ltaddsubd 8307 . . . . 5  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( ( B  +  ( A  mod  M ) )  <  M  <->  B  <  ( M  -  ( A  mod  M ) ) ) )
2522, 24mpbird 166 . . . 4  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( B  +  ( A  mod  M ) )  <  M )
26 modqid 10122 . . . 4  |-  ( ( ( ( B  +  ( A  mod  M ) )  e.  QQ  /\  M  e.  QQ )  /\  ( 0  <_  ( B  +  ( A  mod  M ) )  /\  ( B  +  ( A  mod  M ) )  <  M ) )  ->  ( ( B  +  ( A  mod  M ) )  mod  M
)  =  ( B  +  ( A  mod  M ) ) )
2711, 14, 20, 25, 26syl22anc 1217 . . 3  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( ( B  +  ( A  mod  M ) )  mod  M )  =  ( B  +  ( A  mod  M ) ) )
28 zq 9418 . . . . 5  |-  ( A  e.  ZZ  ->  A  e.  QQ )
2928ad2antrr 479 . . . 4  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  ->  A  e.  QQ )
3012nngt0d 8764 . . . 4  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
0  <  M )
31 modqadd2mod 10147 . . . 4  |-  ( ( ( A  e.  QQ  /\  B  e.  QQ )  /\  ( M  e.  QQ  /\  0  < 
M ) )  -> 
( ( B  +  ( A  mod  M ) )  mod  M )  =  ( ( B  +  A )  mod 
M ) )
3229, 4, 14, 30, 31syl22anc 1217 . . 3  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( ( B  +  ( A  mod  M ) )  mod  M )  =  ( ( B  +  A )  mod 
M ) )
3327, 32eqtr3d 2174 . 2  |-  ( ( ( A  e.  ZZ  /\  M  e.  NN )  /\  B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) ) )  -> 
( B  +  ( A  mod  M ) )  =  ( ( B  +  A )  mod  M ) )
3433ex 114 1  |-  ( ( A  e.  ZZ  /\  M  e.  NN )  ->  ( B  e.  ( 0..^ ( M  -  ( A  mod  M ) ) )  ->  ( B  +  ( A  mod  M ) )  =  ( ( B  +  A )  mod  M
) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    = wceq 1331    e. wcel 1480   class class class wbr 3929  (class class class)co 5774   0cc0 7620    + caddc 7623    < clt 7800    <_ cle 7801    - cmin 7933   NNcn 8720   NN0cn0 8977   ZZcz 9054   QQcq 9411  ..^cfzo 9919    mod cmo 10095
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 603  ax-in2 604  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-13 1491  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121  ax-sep 4046  ax-pow 4098  ax-pr 4131  ax-un 4355  ax-setind 4452  ax-cnex 7711  ax-resscn 7712  ax-1cn 7713  ax-1re 7714  ax-icn 7715  ax-addcl 7716  ax-addrcl 7717  ax-mulcl 7718  ax-mulrcl 7719  ax-addcom 7720  ax-mulcom 7721  ax-addass 7722  ax-mulass 7723  ax-distr 7724  ax-i2m1 7725  ax-0lt1 7726  ax-1rid 7727  ax-0id 7728  ax-rnegex 7729  ax-precex 7730  ax-cnre 7731  ax-pre-ltirr 7732  ax-pre-ltwlin 7733  ax-pre-lttrn 7734  ax-pre-apti 7735  ax-pre-ltadd 7736  ax-pre-mulgt0 7737  ax-pre-mulext 7738  ax-arch 7739
This theorem depends on definitions:  df-bi 116  df-3or 963  df-3an 964  df-tru 1334  df-fal 1337  df-nf 1437  df-sb 1736  df-eu 2002  df-mo 2003  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ne 2309  df-nel 2404  df-ral 2421  df-rex 2422  df-reu 2423  df-rmo 2424  df-rab 2425  df-v 2688  df-sbc 2910  df-csb 3004  df-dif 3073  df-un 3075  df-in 3077  df-ss 3084  df-pw 3512  df-sn 3533  df-pr 3534  df-op 3536  df-uni 3737  df-int 3772  df-iun 3815  df-br 3930  df-opab 3990  df-mpt 3991  df-id 4215  df-po 4218  df-iso 4219  df-xp 4545  df-rel 4546  df-cnv 4547  df-co 4548  df-dm 4549  df-rn 4550  df-res 4551  df-ima 4552  df-iota 5088  df-fun 5125  df-fn 5126  df-f 5127  df-fv 5131  df-riota 5730  df-ov 5777  df-oprab 5778  df-mpo 5779  df-1st 6038  df-2nd 6039  df-pnf 7802  df-mnf 7803  df-xr 7804  df-ltxr 7805  df-le 7806  df-sub 7935  df-neg 7936  df-reap 8337  df-ap 8344  df-div 8433  df-inn 8721  df-n0 8978  df-z 9055  df-uz 9327  df-q 9412  df-rp 9442  df-fz 9791  df-fzo 9920  df-fl 10043  df-mod 10096
This theorem is referenced by: (None)
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