ƚ(@ u ".  @(&M`( & MathType  )Times New Romanww 0wf- 2 ii:Times New Romanww 0wf- 2 NiP#Times New Romanww 0wf-2 i1mi1m$P 8Times New Romanww 0wf-:2 "P(n,...,n)(P(n,...,n)1),i0,1,...,n0Tx|:lSymbolB ww 0wf- 2 iP Symbolt `ww 0wf-2 nn=="&:MathTypeUU.DSMT5WinAllBasicCodePagesTimes New RomanSymbolCourier NewMT Extra!oED/APG_APAPAE%B_AC_AE*_HA@AHA*_D_E_E_A  P i! (nn 1 ,...,nn m i  )!(P iN (n 1 ,...,n m i  )==1),i==0,1,...,n & "Systemf !-