00663nam a2200337Ia 4500010000500000020001800005082002000023100003900043110000500082245005400087250000500141260002900146300002900175490000500204500000500209600000500214610000500219611000500224630000500229650000500234651000500239654000500244700003500249710000900284711000500293720000500298730000500303740000500308752000500313856000700318  a  a9780817632458  a512.7bAn558.NT  aAndreescu, Titu and Andrica, Dorin  a  aNumber theorybstructures, examples, and problems  a  aBostonbBirkhauserc2009  axviii, 384p. Bibl. Index  a  a  a  a  a  a  a  a  a  aAndrica, Dorin ; jt. auth.bc  abc  a  a  a  a  a  df