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  1. "File ZETA.MTH, copyright (c) 1990-2000 by Texas Instruments Incorporated"
  2.  
  3. HURWITZ_ZETA(s,a,m):=(m+a+1/2)^(1-s)/(s-1)+SUM((k+a)^(-s),k,0,m)
  4.  
  5. LERCH_PHI(z,s,a,m):=SUM(z^k/(a+k)^s,k,0,m)
  6.  
  7. POLYLOG(n,z,m):=SUM(z^k/k^n,k,1,m)
  8.  
  9. DILOG(x):=INT(LN(t)/(1-t),t,1,x)
  10.