Mr. Leo's persona is based on Fibonacci, a Medieval Italian mathematician who was born in Pisa in 1170 and died in 1250. He was a very important figure in history as he is the man who 818 years ago introduced to the west the Hindu-Arabic number system that we use today. His book entitled Liber Abaci, published in 1202, provided the basis for modern mathematics. Fibonacci presented the first number system allowing easy calculation using place value. The renowned and still relevant book also includes other significant content including applying the numerals 1 through 9 and zero to bookkeeping, converting weights and measures, calculation of interest, money-changing, and other uses. Liber Abaci is also known for including a legendary mathematical sequence of numbers famously known as the Fibonacci Sequence. Largely overlooked by history, Fibonacci was a critical figure in world history and deserves to be recognized and honored as a leader in the advancement of mathematics, science, and human civilization.
Fibonacci also wrote a math riddle that was converted into a Mother Goose Nursery Rhyme more than 500 years after his death. The rhyme credited to him was based on a puzzle in verse that he penned to illustrate seven to the fifth power. It included seven mules, seven sacks, seven loaves, seven knives, and seven sheathes. This is the resulting Mother Goose Rhyme that shows seven to the fourth power and is entitled “As I Was Going to St. Ives.”
I was going to St, Ives,
I met a man with seven wives,
Every wife had seven sacks,
Every sack had seven cats,
Every cat had seven kits,
Kits, cats, sacks, wives,
How many were going to St. Ives?
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