ƚ` pU .  `&M  & MathType )Times New Romanww 0wf- 2 1ydTimes New Romanww 0wf- 2 1nkPTimes New Romanww 0wf-2 {P,...,P}&3MathTypeUU'DSMT5WinAllBasicCodePagesTimes New RomanSymbolCourier NewMT Extra!oED/APG_APAPAE%B_AC_AE*_HA@AHA*_D_E_E_A  {P 1 ,...,P n 1  } & "Systemf !-