Session 3 :: Between Antiquity and Renaissance

31.12.2018

Order of the day

Repetitio :: Antiquity Narratio :: L'histoire de fille mecanique Questio :: What is a digit ? Lectio :: Dark ages al-Khwarizmi Fibonacci ...
31.12.2018

Question of the day

What is a digit ?
31.12.1379

Etymology of the word "digit"

digit (n.) in English since late 14c., "numeral below 10," from Latin digitus (french: "doigt") "finger or toe" (also with secondary meanings relating to counting and n...
31.12.2018

Mariam-Webster dict. definition of a "digit"

any of the Arabic numerals 1 to 9 and usually the symbol 0 one of the elements that combine to form numbers in a system other than the decimal system di...
31.12.2018

Our definition "digit"

a symbol denoting/representing a natural number ("a numeral") we'll work with four systems of numerals roman: I, V, X, L, C, D, M decimal: 0, 1, ...
01.01.820

Muhammad ibn Musa al-Khwarizmi (c. 780 - 850 A.D.)

persian scholar from golden-age of islamic science his name Latinized as "Algorithmi" (Port. "guarismo" and Spanish "algarismo" mean digit) since 820 A.D. the as...
31.12.849

House of Wisdom of Baghdad

8th century - 12th century :: golden-age of islamic science integration of Persian and Arabic into one cultural realm translation of Greek and Roman works into a...
01.01.820

Liber Algebræ et Almucabola

book about solving quadratic equations principial mathematical text-book of European Universities until 16th century al-ğabr ("forcing", "restoring") operation :: ...
01.01.820

"an algorithm" to solve quadratic equation

If some one says: "You divide ten into two parts: multiply the one by itself; it will be equal to the other taken eighty-one times." Computation: You say, ten less a thing, mu...
01.01.820

Arithmetics: Dixit algorizmi...

Kitāb al-Jam‘ wat-Tafrīq bi-Ḥisāb al-Hi("The Book of Addition and Subtraction According to the Hindu Calculation") Arabic original of the book has been lost 12th ce...
31.12.1201

Leonardo Fibonacci of Pisa (c. 1175 c. 1250)

"the most talented Western mathematician of the Middle Ages" his book Liber Abaci (1202) popularized the Hindu-Arabic numeral systems in Europe travelled extensivel...
31.12.1201

Fibonacci's sequence :: Rabbits

"Suppose a newly-born pair of rabbits, one male, one female, are put in a field. Rabbits are able to mate at the age of one month so that at the end of its second month a fem...
31.12.1201

modus Indorum :: the method of Indians

"The nine Indian figures are: 9 8 7 6 5 4 3 2 1 With these nine figures, and with the sign 0 which the Arabs call zephir any number whatsoever is written..." Leonardo Fibonacci...
31.12.2018

Feedback 0 :: 3 questions

What do I like about the course? What I do not like? What are my wishes?