Certain Number-Theoretic Episodes In Algebra, Second Edition (Hardcover, 2 ed)

From Euclid to Lucas. Solutions of Congruences, Primitive Roots. The Chinese Remainder Theorem. Mobius Inversion. Quadratic Residues. Decomposition of a Number as a Sum of Two or Four Squares. Modular Arithmetical Functions. Dirichlet Algebra of Arithmetical Functions. Ramanujan Sums: I. Ramanujan Sums: II.