(Almost) Impossible Integrals, Sums, and Series

Cornel Ioan Valean lives in Romania. While his background is in accounting and business informatics, he is also an independent researcher and self-educated in the area of the calculation of integrals, series and limits. He has published his work in the Journal of Classical Analysis and the Mediterranean Journal of Mathematics, and has made several contributions to the Problems section of the American Mathematical Monthly.

“This is a collection of 120 challenging integrals and series which can be evaluated by (more or less) elementary means but require a high level of technical proficiency. … The author gives hints and solutions … . This volume can be used to hone one’s technical skills … . Mainly, however, it will appeal to afficionados who enjoy cracking the puzzles presented.” (C. Baxa, Monatshefte für Mathematik, Vol. 201 (4), August, 2023)

• Chapter1. Integrals.- Chapter2. Sums and Series.