机译:HYPERGEOMETRIC RATIONAL APPROXIMATIONS TO ζ(4)
Dipartimento di Ingegneria e Geologia, Università di Chieti-Pescara, Viale Pindaro, 42, 65127 Pescara, Italy;
Department of Mathematics, IMAPP, Radboud University, PO Box 9010, 6500 GL Nijmegen, Netherlands;
irrationality measure; π~4; hypergeometric function; hypergeometric integral; rational approximation;