Theorem modremain 12640

Description: The result of the modulo operation is the remainder of the division algorithm. (Contributed by AV, 19-Aug-2021.)

Assertion

Ref	Expression
modremain	|- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( ( N mod D ) = R <-> E. z e. ZZ ( ( z x. D ) + R ) = N ) )

Distinct variable groups:   z, D   z, N   z, R

Proof of Theorem modremain

Step	Hyp	Ref	Expression
1		eqcom 2236	. 2 |- ( ( N mod D ) = R <-> R = ( N mod D ) )
2		divalgmodcl 12639	. . . 4 |- ( ( N e. ZZ /\ D e. NN /\ R e. NN0 ) -> ( R = ( N mod D ) <-> ( R < D /\ D || ( N - R ) ) ) )
3	2	3adant3r 1262	. . 3 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( R = ( N mod D ) <-> ( R < D /\ D || ( N - R ) ) ) )
4		ibar 301	. . . . 5 |- ( R < D -> ( D || ( N - R ) <-> ( R < D /\ D || ( N - R ) ) ) )
5	4	adantl 277	. . . 4 |- ( ( R e. NN0 /\ R < D ) -> ( D || ( N - R ) <-> ( R < D /\ D || ( N - R ) ) ) )
6	5	3ad2ant3 1047	. . 3 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( D || ( N - R ) <-> ( R < D /\ D || ( N - R ) ) ) )
7		nnz 9613	. . . . . 6 |- ( D e. NN -> D e. ZZ )
8	7	3ad2ant2 1046	. . . . 5 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> D e. ZZ )
9		simp1 1024	. . . . . 6 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> N e. ZZ )
10		nn0z 9614	. . . . . . . 8 |- ( R e. NN0 -> R e. ZZ )
11	10	adantr 276	. . . . . . 7 |- ( ( R e. NN0 /\ R < D ) -> R e. ZZ )
12	11	3ad2ant3 1047	. . . . . 6 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> R e. ZZ )
13	9, 12	zsubcld 9723	. . . . 5 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( N - R ) e. ZZ )
14		divides 12500	. . . . 5 |- ( ( D e. ZZ /\ ( N - R ) e. ZZ ) -> ( D || ( N - R ) <-> E. z e. ZZ ( z x. D ) = ( N - R ) ) )
15	8, 13, 14	syl2anc 411	. . . 4 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( D || ( N - R ) <-> E. z e. ZZ ( z x. D ) = ( N - R ) ) )
16		eqcom 2236	. . . . . 6 |- ( ( z x. D ) = ( N - R ) <-> ( N - R ) = ( z x. D ) )
17		zcn 9599	. . . . . . . . 9 |- ( N e. ZZ -> N e. CC )
18	17	3ad2ant1 1045	. . . . . . . 8 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> N e. CC )
19	18	adantr 276	. . . . . . 7 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> N e. CC )
20		nn0cn 9523	. . . . . . . . . 10 |- ( R e. NN0 -> R e. CC )
21	20	adantr 276	. . . . . . . . 9 |- ( ( R e. NN0 /\ R < D ) -> R e. CC )
22	21	3ad2ant3 1047	. . . . . . . 8 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> R e. CC )
23	22	adantr 276	. . . . . . 7 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> R e. CC )
24		simpr 110	. . . . . . . . 9 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> z e. ZZ )
25	8	adantr 276	. . . . . . . . 9 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> D e. ZZ )
26	24, 25	zmulcld 9724	. . . . . . . 8 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> ( z x. D ) e. ZZ )
27	26	zcnd 9719	. . . . . . 7 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> ( z x. D ) e. CC )
28	19, 23, 27	subadd2d 8619	. . . . . 6 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> ( ( N - R ) = ( z x. D ) <-> ( ( z x. D ) + R ) = N ) )
29	16, 28	bitrid 192	. . . . 5 |- ( ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) /\ z e. ZZ ) -> ( ( z x. D ) = ( N - R ) <-> ( ( z x. D ) + R ) = N ) )
30	29	rexbidva 2541	. . . 4 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( E. z e. ZZ ( z x. D ) = ( N - R ) <-> E. z e. ZZ ( ( z x. D ) + R ) = N ) )
31	15, 30	bitrd 188	. . 3 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( D || ( N - R ) <-> E. z e. ZZ ( ( z x. D ) + R ) = N ) )
32	3, 6, 31	3bitr2d 216	. 2 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( R = ( N mod D ) <-> E. z e. ZZ ( ( z x. D ) + R ) = N ) )
33	1, 32	bitrid 192	1 |- ( ( N e. ZZ /\ D e. NN /\ ( R e. NN0 /\ R < D ) ) -> ( ( N mod D ) = R <-> E. z e. ZZ ( ( z x. D ) + R ) = N ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   /\ w3a 1005   = wceq 1398   e. wcel 2205   E.wrex 2523   class class class wbr 4114  (class class class)co 6058   CCcc 8141   + caddc 8146   x. cmul 8148   < clt 8324   - cmin 8460   NNcn 9254   NN0cn0 9513   ZZcz 9594   mod cmo 10708   || cdvds 12498

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 4230  ax-sep 4233  ax-nul 4241  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-iinf 4715  ax-cnex 8234  ax-resscn 8235  ax-1cn 8236  ax-1re 8237  ax-icn 8238  ax-addcl 8239  ax-addrcl 8240  ax-mulcl 8241  ax-mulrcl 8242  ax-addcom 8243  ax-mulcom 8244  ax-addass 8245  ax-mulass 8246  ax-distr 8247  ax-i2m1 8248  ax-0lt1 8249  ax-1rid 8250  ax-0id 8251  ax-rnegex 8252  ax-precex 8253  ax-cnre 8254  ax-pre-ltirr 8255  ax-pre-ltwlin 8256  ax-pre-lttrn 8257  ax-pre-apti 8258  ax-pre-ltadd 8259  ax-pre-mulgt0 8260  ax-pre-mulext 8261  ax-arch 8262

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 3046  df-csb 3142  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-nul 3513  df-if 3625  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-iun 3998  df-br 4115  df-opab 4177  df-mpt 4178  df-tr 4214  df-id 4419  df-po 4422  df-iso 4423  df-iord 4492  df-on 4494  df-ilim 4495  df-suc 4497  df-iom 4718  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-ima 4767  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-f1 5362  df-fo 5363  df-f1o 5364  df-fv 5365  df-riota 6011  df-ov 6061  df-oprab 6062  df-mpo 6063  df-1st 6347  df-2nd 6348  df-recs 6549  df-frec 6635  df-pnf 8326  df-mnf 8327  df-xr 8328  df-ltxr 8329  df-le 8330  df-sub 8462  df-neg 8463  df-reap 8866  df-ap 8873  df-div 8964  df-inn 9255  df-2 9313  df-n0 9514  df-z 9595  df-uz 9872  df-q 9970  df-rp 10005  df-fl 10654  df-mod 10709  df-seqfrec 10834  df-exp 10925  df-cj 11552  df-re 11553  df-im 11554  df-rsqrt 11708  df-abs 11709  df-dvds 12499

This theorem is referenced by:  bezoutlemnewy  12717  bezoutlemstep  12718