Preface

It is for this reason that God is called Ain Sof, literally “the Infinite.” One can climb higher and higher, reaching toward infinity, but one can never attain it. Infinity may remain a goal, but it is only a goal that points to a direction, but not a goal that actually can be reached. The same is true of the Infinite Ain Sof.

 ¨     Rabbi Aryeh Kaplan, Comment on Sefer Yetzirah 1:4

At the end of the twelfth century, the now famous Italian mathematician Leonardo Fibonacci returned to his hometown Pisa after a long stay in North Africa and the Middle East. During his absence Fibonacci studied various mathematical systems unknown in Europe. It was Fibonacci that introduced the zero in our decimal number system.

After his return, Fibonacci worked for years on various mathematical masterpieces. In his famous “Liber Abbaci” he describes the sequence at which rabbits multiply themselves under ideal circumstances. This sequence corresponds with the simplest of all mathematical progressions.

Mathematical progressions are as old as Plato & Pythagoras, but considering the fact that Fibonacci was the first to specifically write about this "mother of all progressions", it has been named after him.

0+1 = 1
1+1 = 2
1+2 = 3
2+3 = 5
3+5 = 8
5+8 = 13
8+13 = 21
13+21 = 34
21+34 = 55