ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  eulerth Unicode version

Theorem eulerth 12401
Description: Euler's theorem, a generalization of Fermat's little theorem. If  A and  N are coprime, then  A ^ phi ( N )  ==  1 (mod  N). This is Metamath 100 proof #10. Also called Euler-Fermat theorem, see theorem 5.17 in [ApostolNT] p. 113. (Contributed by Mario Carneiro, 28-Feb-2014.)
Assertion
Ref Expression
eulerth  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  (
( A ^ ( phi `  N ) )  mod  N )  =  ( 1  mod  N
) )

Proof of Theorem eulerth
Dummy variables  f  y  k are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 phicl 12383 . . . . . . . 8  |-  ( N  e.  NN  ->  ( phi `  N )  e.  NN )
21nnnn0d 9302 . . . . . . 7  |-  ( N  e.  NN  ->  ( phi `  N )  e. 
NN0 )
3 hashfz1 10875 . . . . . . 7  |-  ( ( phi `  N )  e.  NN0  ->  ( `  (
1 ... ( phi `  N ) ) )  =  ( phi `  N ) )
42, 3syl 14 . . . . . 6  |-  ( N  e.  NN  ->  ( `  ( 1 ... ( phi `  N ) ) )  =  ( phi `  N ) )
5 dfphi2 12388 . . . . . 6  |-  ( N  e.  NN  ->  ( phi `  N )  =  ( `  { k  e.  ( 0..^ N )  |  ( k  gcd 
N )  =  1 } ) )
64, 5eqtrd 2229 . . . . 5  |-  ( N  e.  NN  ->  ( `  ( 1 ... ( phi `  N ) ) )  =  ( `  {
k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } ) )
763ad2ant1 1020 . . . 4  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  ( `  ( 1 ... ( phi `  N ) ) )  =  ( `  {
k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } ) )
8 1zzd 9353 . . . . . 6  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  1  e.  ZZ )
913ad2ant1 1020 . . . . . . 7  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  ( phi `  N )  e.  NN )
109nnzd 9447 . . . . . 6  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  ( phi `  N )  e.  ZZ )
118, 10fzfigd 10523 . . . . 5  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  (
1 ... ( phi `  N ) )  e. 
Fin )
12 id 19 . . . . . 6  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 ) )
13 oveq1 5929 . . . . . . . 8  |-  ( k  =  y  ->  (
k  gcd  N )  =  ( y  gcd 
N ) )
1413eqeq1d 2205 . . . . . . 7  |-  ( k  =  y  ->  (
( k  gcd  N
)  =  1  <->  (
y  gcd  N )  =  1 ) )
1514cbvrabv 2762 . . . . . 6  |-  { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 }  =  {
y  e.  ( 0..^ N )  |  ( y  gcd  N )  =  1 }
1612, 15eulerthlemfi 12396 . . . . 5  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 }  e.  Fin )
17 hashen 10876 . . . . 5  |-  ( ( ( 1 ... ( phi `  N ) )  e.  Fin  /\  {
k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 }  e.  Fin )  ->  ( ( `  ( 1 ... ( phi `  N ) ) )  =  ( `  {
k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } )  <-> 
( 1 ... ( phi `  N ) ) 
~~  { k  e.  ( 0..^ N )  |  ( k  gcd 
N )  =  1 } ) )
1811, 16, 17syl2anc 411 . . . 4  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  (
( `  ( 1 ... ( phi `  N
) ) )  =  ( `  { k  e.  ( 0..^ N )  |  ( k  gcd 
N )  =  1 } )  <->  ( 1 ... ( phi `  N ) )  ~~  { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } ) )
197, 18mpbid 147 . . 3  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  (
1 ... ( phi `  N ) )  ~~  { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } )
20 bren 6806 . . 3  |-  ( ( 1 ... ( phi `  N ) )  ~~  { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 }  <->  E. f 
f : ( 1 ... ( phi `  N ) ) -1-1-onto-> { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } )
2119, 20sylib 122 . 2  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  E. f 
f : ( 1 ... ( phi `  N ) ) -1-1-onto-> { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } )
22 simpl 109 . . 3  |-  ( ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  /\  f : ( 1 ... ( phi `  N
) ) -1-1-onto-> { k  e.  ( 0..^ N )  |  ( k  gcd  N
)  =  1 } )  ->  ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 ) )
23 simpr 110 . . 3  |-  ( ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  /\  f : ( 1 ... ( phi `  N
) ) -1-1-onto-> { k  e.  ( 0..^ N )  |  ( k  gcd  N
)  =  1 } )  ->  f :
( 1 ... ( phi `  N ) ) -1-1-onto-> { k  e.  ( 0..^ N )  |  ( k  gcd  N )  =  1 } )
2422, 15, 23eulerthlemth 12400 . 2  |-  ( ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  /\  f : ( 1 ... ( phi `  N
) ) -1-1-onto-> { k  e.  ( 0..^ N )  |  ( k  gcd  N
)  =  1 } )  ->  ( ( A ^ ( phi `  N ) )  mod 
N )  =  ( 1  mod  N ) )
2521, 24exlimddv 1913 1  |-  ( ( N  e.  NN  /\  A  e.  ZZ  /\  ( A  gcd  N )  =  1 )  ->  (
( A ^ ( phi `  N ) )  mod  N )  =  ( 1  mod  N
) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    /\ w3a 980    = wceq 1364   E.wex 1506    e. wcel 2167   {crab 2479   class class class wbr 4033   -1-1-onto->wf1o 5257   ` cfv 5258  (class class class)co 5922    ~~ cen 6797   Fincfn 6799   0cc0 7879   1c1 7880   NNcn 8990   NN0cn0 9249   ZZcz 9326   ...cfz 10083  ..^cfzo 10217    mod cmo 10414   ^cexp 10630  ♯chash 10867    gcd cgcd 12120   phicphi 12377
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 615  ax-in2 616  ax-io 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-13 2169  ax-14 2170  ax-ext 2178  ax-coll 4148  ax-sep 4151  ax-nul 4159  ax-pow 4207  ax-pr 4242  ax-un 4468  ax-setind 4573  ax-iinf 4624  ax-cnex 7970  ax-resscn 7971  ax-1cn 7972  ax-1re 7973  ax-icn 7974  ax-addcl 7975  ax-addrcl 7976  ax-mulcl 7977  ax-mulrcl 7978  ax-addcom 7979  ax-mulcom 7980  ax-addass 7981  ax-mulass 7982  ax-distr 7983  ax-i2m1 7984  ax-0lt1 7985  ax-1rid 7986  ax-0id 7987  ax-rnegex 7988  ax-precex 7989  ax-cnre 7990  ax-pre-ltirr 7991  ax-pre-ltwlin 7992  ax-pre-lttrn 7993  ax-pre-apti 7994  ax-pre-ltadd 7995  ax-pre-mulgt0 7996  ax-pre-mulext 7997  ax-arch 7998  ax-caucvg 7999
This theorem depends on definitions:  df-bi 117  df-stab 832  df-dc 836  df-3or 981  df-3an 982  df-tru 1367  df-fal 1370  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ne 2368  df-nel 2463  df-ral 2480  df-rex 2481  df-reu 2482  df-rmo 2483  df-rab 2484  df-v 2765  df-sbc 2990  df-csb 3085  df-dif 3159  df-un 3161  df-in 3163  df-ss 3170  df-nul 3451  df-if 3562  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-uni 3840  df-int 3875  df-iun 3918  df-br 4034  df-opab 4095  df-mpt 4096  df-tr 4132  df-id 4328  df-po 4331  df-iso 4332  df-iord 4401  df-on 4403  df-ilim 4404  df-suc 4406  df-iom 4627  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-rn 4674  df-res 4675  df-ima 4676  df-iota 5219  df-fun 5260  df-fn 5261  df-f 5262  df-f1 5263  df-fo 5264  df-f1o 5265  df-fv 5266  df-isom 5267  df-riota 5877  df-ov 5925  df-oprab 5926  df-mpo 5927  df-1st 6198  df-2nd 6199  df-recs 6363  df-irdg 6428  df-frec 6449  df-1o 6474  df-oadd 6478  df-er 6592  df-en 6800  df-dom 6801  df-fin 6802  df-sup 7050  df-pnf 8063  df-mnf 8064  df-xr 8065  df-ltxr 8066  df-le 8067  df-sub 8199  df-neg 8200  df-reap 8602  df-ap 8609  df-div 8700  df-inn 8991  df-2 9049  df-3 9050  df-4 9051  df-n0 9250  df-z 9327  df-uz 9602  df-q 9694  df-rp 9729  df-fz 10084  df-fzo 10218  df-fl 10360  df-mod 10415  df-seqfrec 10540  df-exp 10631  df-ihash 10868  df-cj 11007  df-re 11008  df-im 11009  df-rsqrt 11163  df-abs 11164  df-clim 11444  df-proddc 11716  df-dvds 11953  df-gcd 12121  df-phi 12379
This theorem is referenced by:  fermltl  12402  prmdiv  12403  odzcllem  12411  odzphi  12415  vfermltl  12420  lgslem1  15241
  Copyright terms: Public domain W3C validator