Boros (mathematics, Xavier U. of Louisiana before his death) and Moll (mathematics, Tulane U.) write on areas of mathematics that appear in the evaluation of integrals. Writing for junior or senior undergraduate students, they assume readers to have a good knowledge of one-variable calculus, and to have been exposed to rigorous proof in a course such as Discrete Mathematics. They emphasize the connection with number theory and the connection between the discrete-prime numbers, binomial coefficients-and the continuous-integrals, special functions.