Session 3 :: Between Antiquity and Renaissance

01.01.820 · AE-11500101
31.12.2018 · AE481231

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 · AE481231

Question of the day

What is a digit ?
31.12.1379 · AE-5911231

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 · AE481231

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 · AE481231

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 · AE-11500101

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 · AE-11211231

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 · AE-11500101

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 · AE-11500101

"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 · AE-11500101

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 · AE-7691231

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 · AE-7691231

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 · AE-7691231

Fibonacci's sequence :: Spiral

31.12.1201 · AE-7691231

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 · AE481231

Feedback 0 :: 3 questions

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