ARTICLES
Olivier and Abel on Series Convergence: An Episode from Early 19th Century Analysis
by Michael Goar
Apollonian Cubics: An Application of Group Theory to a Problem in Euclidean Geometry
by Paris Pamfilos and Apostolos Thoma
Tangent Sequences, World Records, p, and the Meaning of Life: Some Applications of Number Theory to Calculus
by Ira Rosenholtz
NOTES
Proof Without Words: Geometry of Subtraction Formulas
by Leonard M. Smiley
Raising the Roots
by, Al Cuoco
Invariants Under Group Actions to Amaze Your Friends
by Douglas E. Ensley
On Groups That Are Isomorphic to a Proper Subgroup
by Shaun Fallat, Chi-Kwong Li, David Lutzer, and David Stanford
Integration of Radial Function
by John A. Baker
Is 0.999.. = 1?
by Fred Richman
Math Bite: On the Definition of Collineation
by G. Cairns, G. Elton, and P. J. Stacey
Density of the Images of Integers Under Continuous Functions with Irrational Periods
by Sining Zheng and Jiangchen Cheng
Bold Play Is Best: A Simple Proof
by Richard Isaac
Proof Without Words: a2 + b2= c2,
by Poo-sung Park
PROBLEMS
Proposals 1584-1588
Quickies 895-896
Solutions 1559-1563
Answers 895-896
REVIEWS
NEWS AND LETTERS
Acknowledgments
Index to Volume 72
New Editor of Mathematics Magazine