The Magic Behind the Franklin Magic Circle

Saturday, October 29, 2011
Hall 1-2 (San Jose Convention Center)
Rebecca Garcia, PhD , Mathematics and Statistics Department, Sam Houston State University, Huntsville, TX
Maxsimino Montes , Mathematics, Sam Houston State University, Huntsville, TX
Tatiana Kovyrshina , Mathematics, Sam Houston State University, Huntsville, TX
Katie Watkins , Mathematics, Sam Houston State University, Huntsville, TX

Dr. Benjamin Franklin is popularly known for his creation of the lightning

rod, bifocals, and many discoveries regarding electricity. He also

participated in the fundamental foundations of the United States of

America including co-writing the Declaration of Independence. To avoid

weariness in congressional debates, Franklin used his intellect to create

both magic squares and magic circles. Franklin Magic Circles are whole

numbers arranged in concentric circles such that when added in specific

patterns the sum will be the same. Franklin believed his discovery to

be trivial and that "no one desired [him] to show [them his] method of

disposing the numbers. It seems they wish rather to investigate it themselves."

In our presentation, we will discuss the re-creation, enumeration,

and symmetry operations of Franklin’s original magic circle, as well as a

new, unique Franklin Magic Circle. We will use algebraic techniques to

unravel the mysteries of Franklin’s creation while revealing the fascinating

characteristics that define Franklin Magic Circles.