CTK Insights

It's a rare pleasure to get a good book ahead of its planned publishing date. In Pursuit of the Traveling Salesman by William Cook that was expected at the beginning of 2012, was delivered yesterday right to my door. My first impression is that this is the sort of a book that are read in [...]

Many book authors end their book Introduction expressing the hope that readers will enjoy reading the book as much as the author(s) enjoyed writing it. Persi Diaconis and Ron Graham do not. Nonetheless, their book - Magical Mathematics - oozes their enjoyment at writing it. The authors are master storytellers. Movingly, Martin Gardner wrote Foreword [...]

What is the setup? The setup for this activity is the graph with 8 nodes joined as shown: What is the task? The task is to place the integers 1 through 8 onto the nodes of the graph so that no two successive integers are "graph neighbors", i.e., joined by an edge. What to observe? [...]