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Theorem modqid 10583
Description: Identity law for modulo. (Contributed by Jim Kingdon, 21-Oct-2021.)
Assertion
Ref Expression
modqid |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A mod B ) = A )
Proof of Theorem modqid
StepHypRef Expression
1 simpll 527 . . 3 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> A e. QQ )
2 simplr 528 . . 3 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> B e. QQ )
3 0red 8158 . . . 4 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> 0 e. RR )
4 qre 9832 . . . . 5 |- ( A e. QQ -> A e. RR )
54ad2antrr 488 . . . 4 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> A e. RR )
6 qre 9832 . . . . 5 |- ( B e. QQ -> B e. RR )
76ad2antlr 489 . . . 4 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> B e. RR )
8 simprl 529 . . . 4 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> 0 <_ A )
9 simprr 531 . . . 4 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> A < B )
103, 5, 7, 8, 9lelttrd 8282 . . 3 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> 0 < B )
11 modqval 10558 . . 3 |- ( ( A e. QQ /\ B e. QQ /\ 0 < B ) -> ( A mod B ) = ( A - ( B x. ( |_ ` ( A / B ) ) ) ) )
121, 2, 10, 11syl3anc 1271 . 2 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A mod B ) = ( A - ( B x. ( |_ ` ( A / B ) ) ) ) )
1310gt0ne0d 8670 . . . . . . . . 9 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> B =/= 0 )
14 qdivcl 9850 . . . . . . . . 9 |- ( ( A e. QQ /\ B e. QQ /\ B =/= 0 ) -> ( A / B ) e. QQ )
151, 2, 13, 14syl3anc 1271 . . . . . . . 8 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A / B ) e. QQ )
16 qcn 9841 . . . . . . . 8 |- ( ( A / B ) e. QQ -> ( A / B ) e. CC )
17 addlid 8296 . . . . . . . . 9 |- ( ( A / B ) e. CC -> ( 0 + ( A / B ) ) = ( A / B ) )
1817fveq2d 5633 . . . . . . . 8 |- ( ( A / B ) e. CC -> ( |_ ` ( 0 + ( A / B ) ) ) = ( |_ ` ( A / B ) ) )
1915, 16, 183syl 17 . . . . . . 7 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( |_ ` ( 0 + ( A / B ) ) ) = ( |_ ` ( A / B ) ) )
20 divge0 9031 . . . . . . . . 9 |- ( ( ( A e. RR /\ 0 <_ A ) /\ ( B e. RR /\ 0 < B ) ) -> 0 <_ ( A / B ) )
215, 8, 7, 10, 20syl22anc 1272 . . . . . . . 8 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> 0 <_ ( A / B ) )
227recnd 8186 . . . . . . . . . . 11 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> B e. CC )
2322mulridd 8174 . . . . . . . . . 10 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( B x. 1 ) = B )
249, 23breqtrrd 4111 . . . . . . . . 9 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> A < ( B x. 1 ) )
25 1red 8172 . . . . . . . . . 10 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> 1 e. RR )
26 ltdivmul 9034 . . . . . . . . . 10 |- ( ( A e. RR /\ 1 e. RR /\ ( B e. RR /\ 0 < B ) ) -> ( ( A / B ) < 1 <-> A < ( B x. 1 ) ) )
275, 25, 7, 10, 26syl112anc 1275 . . . . . . . . 9 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( ( A / B ) < 1 <-> A < ( B x. 1 ) ) )
2824, 27mpbird 167 . . . . . . . 8 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A / B ) < 1 )
29 0z 9468 . . . . . . . . 9 |- 0 e. ZZ
30 flqbi2 10523 . . . . . . . . 9 |- ( ( 0 e. ZZ /\ ( A / B ) e. QQ ) -> ( ( |_ ` ( 0 + ( A / B ) ) ) = 0 <-> ( 0 <_ ( A / B ) /\ ( A / B ) < 1 ) ) )
3129, 15, 30sylancr 414 . . . . . . . 8 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( ( |_ ` ( 0 + ( A / B ) ) ) = 0 <-> ( 0 <_ ( A / B ) /\ ( A / B ) < 1 ) ) )
3221, 28, 31mpbir2and 950 . . . . . . 7 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( |_ ` ( 0 + ( A / B ) ) ) = 0 )
3319, 32eqtr3d 2264 . . . . . 6 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( |_ ` ( A / B ) ) = 0 )
3433oveq2d 6023 . . . . 5 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( B x. ( |_ ` ( A / B ) ) ) = ( B x. 0 ) )
3522mul01d 8550 . . . . 5 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( B x. 0 ) = 0 )
3634, 35eqtrd 2262 . . . 4 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( B x. ( |_ ` ( A / B ) ) ) = 0 )
3736oveq2d 6023 . . 3 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A - ( B x. ( |_ ` ( A / B ) ) ) ) = ( A - 0 ) )
385recnd 8186 . . . 4 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> A e. CC )
3938subid1d 8457 . . 3 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A - 0 ) = A )
4037, 39eqtrd 2262 . 2 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A - ( B x. ( |_ ` ( A / B ) ) ) ) = A )
4112, 40eqtrd 2262 1 |- ( ( ( A e. QQ /\ B e. QQ ) /\ ( 0 <_ A /\ A < B ) ) -> ( A mod B ) = A )
Colors of variables: wff set class
Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1395   e. wcel 2200   =/= wne 2400   class class class wbr 4083   ` cfv 5318  (class class class)co 6007   CCcc 8008   RRcr 8009   0cc0 8010   1c1 8011   + caddc 8013   x. cmul 8015   < clt 8192   <_ cle 8193   - cmin 8328   / cdiv 8830   ZZcz 9457   QQcq 9826   |_cfl 10500   mod cmo 10556
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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-cnex 8101  ax-resscn 8102  ax-1cn 8103  ax-1re 8104  ax-icn 8105  ax-addcl 8106  ax-addrcl 8107  ax-mulcl 8108  ax-mulrcl 8109  ax-addcom 8110  ax-mulcom 8111  ax-addass 8112  ax-mulass 8113  ax-distr 8114  ax-i2m1 8115  ax-0lt1 8116  ax-1rid 8117  ax-0id 8118  ax-rnegex 8119  ax-precex 8120  ax-cnre 8121  ax-pre-ltirr 8122  ax-pre-ltwlin 8123  ax-pre-lttrn 8124  ax-pre-apti 8125  ax-pre-ltadd 8126  ax-pre-mulgt0 8127  ax-pre-mulext 8128  ax-arch 8129
This theorem depends on definitions:  df-bi 117  df-3or 1003  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-reu 2515  df-rmo 2516  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-int 3924  df-iun 3967  df-br 4084  df-opab 4146  df-mpt 4147  df-id 4384  df-po 4387  df-iso 4388  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-res 4731  df-ima 4732  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-fv 5326  df-riota 5960  df-ov 6010  df-oprab 6011  df-mpo 6012  df-1st 6292  df-2nd 6293  df-pnf 8194  df-mnf 8195  df-xr 8196  df-ltxr 8197  df-le 8198  df-sub 8330  df-neg 8331  df-reap 8733  df-ap 8740  df-div 8831  df-inn 9122  df-n0 9381  df-z 9458  df-q 9827  df-rp 9862  df-fl 10502  df-mod 10557
This theorem is referenced by:  modqid2  10585  q0mod  10589  q1mod  10590  modqabs  10591  mulqaddmodid  10598  m1modnnsub1  10604  modqltm1p1mod  10610  q2submod  10619  modifeq2int  10620  modaddmodlo  10622  modqsubdir  10627  modsumfzodifsn  10630  bitsinv1  12488  crth  12761  eulerthlemh  12768  prmdiveq  12773  modprm0  12792  4sqlem12  12940  znf1o  14630  wilthlem1  15669  lgslem1  15694  lgsdir2lem1  15722  lgsdirprm  15728  lgseisenlem1  15764  lgseisenlem2  15765  lgseisen  15768  m1lgs  15779  2lgslem1a1  15780  2lgslem4  15797
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