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Alternating iterations of the sum of divisors function and the Pseudo-Smarandache Function
This study is an extention of work done by Charles Ashbacher.
Topics in Recreational Mathematics 4/2015
This is the fourth in a series of books in recreational mathematics edited by Charles Ashbacher. It contains contributions from several authors as well as problems and original artwork.
Thirteenth International Anthology on Paradoxism
Contributors by country: George ROCA (Australia); Octavian BLAGA (Belgium); Bernd HUTSCHENREUTHER (Germany); Nicolae RUSU (Republic of Moldova); Elena AGIU-NEACŞU, Vătuiu Roaua Ion ANDRUŞA, Virgil BORCAN, Adrian BOTEZ, Ana Maria BUZOIANU, Eugen EVU, Constantin MANEA, Nicolae NICOARĂ, Gheorghe NICULESCU, Nicolae NISTOROIU, Ion PĂTRAȘCU, Gheorghe SĂVOIU, Elena TRIFAN, Ioan Adrian TRIFAN (România); Charles ASHBACHER, Nicholas NARCISS, Caytie RIBBLE, Florentin SMARANDACHE (USA).
Palindromic Numbers and Iterations of the Pseudo-Smarandache Function
This paper was originally published in Proceedings of the First International Coference on Smarandache Type Notions in Number Theory.
Have Some Sums to Solve
This book presents a challenging diversion to mathematics enthusiasts. Divided into three sections, the author gives some historical notes, a step-by-step solution of a sample alphametic, and some general hints on the solution of alphametics. The Puzzle Section contains both the ideal doubly-true type of alphametic and the narrative type presented in the context of a brain-teaser. Directed Approach Section provides instructions to help find the solutions of every alphametic in the book. Solution Section gives the solution to each and every alphametic and answers questions raised in the narrative examples. Problems vary in degree of difficulty to tease even an expert.
Take a Look at a Good Book
"Take A Look At A Good Book" is the third book in a series. The popular features of the two earlier books, "Have Some Sums to Solve" and "At Last!! Encoded Totals, Second Addition", have been retained in "Take A Look At A Good Book". The thirty-eight puzzles presented in Section 1, along with the cover, dedication, and preface puzzles, all fall into the special subcategory of additive alphametics. Each of their sums has a unique decoding, sometimes insured by the imposition of an initial condition.
Challenging Mathematical Teasers
100 tough story teasers for the jaded. More difficult algebraically than typical puzzles, and ideal for confirmed puzzle fanatic, but appendices help less experienced. Step-by-step solutions to all 100 puzzles. Also 40 new alphametics — solvable by simple arithmetic and logical reasoning — with answers, and two sample solutions.
Entertaining Mathematical Puzzles
Playing with mathematical riddles can be an intriguing and fun-filled pastime — as popular science writer Martin Gardner proves in this entertaining collection. Puzzlists need only an elementary knowledge of math and a will to resist looking up the answer before trying to solve a problem. Written in a light and witty style, Entertaining Mathematical Puzzles is a mixture of old and new riddles, grouped into sections that cover a variety of mathematical topics: money, speed, plane and solid geometry, probability, topology, tricky puzzles, and more. The probability section, for example, points out that everything we do, everything that happens around us, obeys the laws of probability; geometr...
