les chiffres dits "arabes" ce sont des chiffres berbères

[zek]

Al Khawarizmi est ne en Ouzbekistan dans la province de Khwarezm: d'ou son nom. Il n'est pas ne a Baghdad. Il est plutot mort a Baghdad. Arrette de changer l'histoire.

Désolé mais wikipedia n'est pas une source fiable, Al-Khawarizmi est vraisemblablement né à Bagdad.

On sait assez peu de choses au sujet de la vie du grand mathématicien perse Abu Ja'far Muhammad ibn Musa al-Khawarizmi. Vraisemblablement né en 780 à Bagdad, il est mort vers 850, D'autres sources voient son lieu de naissance en Ouzbékistan, au sud de la mer d'Aral, dans la ville de Khawarizm.

Il a passé la plus grande partie de sa vie à Bagdad, sous le patronnage du Calife al-Mamun, qui prit le pouvoir en 813, quatre ans après la mort de son père, le Calife Harun al-Rashid, quatre ans pendant lesquels il disputa âprement le pouvoir à son frère aîné al-Amin.

Al-Mamun créa une bibliothèque de manuscrits à Bagdad, où étaient entreposés les manuscrits grecs de Byzance, la première grande bibliothèque à être créée après la destruction de celle d'Alexandrie.

[absente]

At the bottom of page of Volume I of the book of Ibn Khaldun on the origins of the Berbers figure, without any reference or date or place, the following annotation: "the branch of Ulhas, information it would return the writings of the historian Ibn Idhari author of the Al Bayan Al Moghrib.[1]
If this branch is currently sedentary tribes on the banks of the wadi Tafna in current Algeria, the absence of any reference in the writings of Ibn Khaldun does not identify where it was located in the time of Tariq ibn Ziyad.
Apart from its name, the surname of his father, date and place of his death, the civil of the military is uncertain. As for his ethnicity, historians today agree that he was Berber, although there are some sources giving him Persian ancestry..

source: Wiki.

[Nadyr]

Atakor.
tu sait avec sa on consomme moins d'electricité dans les aparei qui affiche des numero

comme la plaque qui serve de changement de joueurs lors d'un match

genre il faut 7 petite lampe pour formé le 8 dans une montre par exemple
dans celui la on aura besoin de 6
ainsi quelque autres chiffres toujours - 1 lampe

c'est pas mal

[Alryib3]

Désolé mais wikipedia n'est pas une source fiable, Al-Khawarizmi est vraisemblablement né à Bagdad.

Desole a mon tour mais ma source n'est pas wikipedia: c'est la librairie numerique pour la physique et l'astronomie oublie conjointement par la NASA et l'Universite de Harvard. Tu pourra y lire que Al Khawarizmi est bel et bien a Khawarizm (aujourd'hui Kheva).

Voici le lien:
http://adsabs.harvard.edu/abs/2000eaa..bookE3409.

Et voici le texte: "Born at Khawarizm (Kheva), south of the Aral Sea, ..."

Dire que on ne sait pas ou Khawarizmi est ne releve du ridicule. Et le justifier en me citant aucune source juste apres m'avoir dit que wikipedia n'est pas une source fiable est encore plus ridicule...

[Alryib3]

Apart from its name, the surname of his father, date and place of his death, the civil of the military is uncertain.

source: Wiki.

Waou...

Non seulement la source c'est wiki, mais en plus la phrase en Anglais n'a aucun sens. Trop fort Lynas!

[Alryib3]

Nadyr,

Il te faudrait 8 segments et non 6: les 2 diagonales seraient chacune composees de 2 segments pour qu'elles puissent etre illuminees par demi segment seulement ce qui est necessaire pour afficher un chiffre comme six dans l'exemple cite. La configuration classique utilise elle 7 segments seulement, donc elle reste plus efficace.

[zek]

Pour ceux qui dénigrent l'apport des savant musulmans d'origines arabes, (tribus d'Irak, de Syrie ou de la péninsule arabique, essayer de compter ces centaines de savant connus ou inconnus, oubliés de l'histoire, vous serez surpris qu'ils sont majoritaires.

[absente]

MOHAMMAD BIN MUSA AL-KHAWARIZMI

(Died 840 C.E.)

Abu Abdullah Mohammad Ibn Musa al-Khawarizmi was born at Khawarizm (Kheva), south of Aral sea. Very little is known about his early life, except for the fact that his parents had migrated to a place south of Baghdad. The exact dates of his birth and death are also not known, but it is established that he flourished under Al- Mamun at Baghdad through 813-833 and probably died around 840 C.E.


Khawarizmi was a mathematician, astronomer and geographer. He was perhaps one of the greatest mathematicians who ever lived, as, in fact, he was the founder of several branches and basic concepts of mathematics. In the words of Phillip Hitti, he influenced mathematical thought to a greater extent than any other medieval writer. His work on algebra was outstanding, as he not only initiated the subject in a systematic form but he also developed it to the extent of giving analytical solutions of linear and quadratic equations, which established him as the founder of Algebra. The very name Algebra has been derived from his famous book Al-Jabr wa-al-Muqabilah. His arithmetic synthesised Greek and Hindu knowledge and also contained his own contribution of fundamental importance to mathematics and science. Thus, he explained the use of zero, a numeral of fundamental importance developed by the Arabs. Similarly, he developed the decimal system so that the overall system of numerals, 'algorithm' or 'algorizm' is named after him. In addition to introducting the Indian system of numerals (now generally known as Arabic numerals), he developed at length several arithmetical procedures, including operations on fractions. It was through his work that the system of numerals was first introduced to Arabs and later to Europe, through its translations in European languages. He developed in detail trigonometric tables containing the sine functions, which were probably extrapolated to tangent functions by Maslama. He also perfected the geometric representation of conic sections and developed the calculus of two errors, which practically led him to the concept of differentiation. He is also reported to have collaborated in the degree measurements ordered by Mamun al-Rashid were aimed at measuring of volume and circumference of the earth.


The development of astronomical tables by him was a significant contribution to the science of astronomy, on which he also wrote a book. The contribution of Khawarizmi to geography is also outstanding, in that not only did he revise Ptolemy's views on geography, but also corrected them in detail as well as his map of the world. His other contributions include original work related to clocks, sundials and astrolabes.
Several of his books were translated into Latin in the early 12th century. In fact, his book on arithmetic, Kitab al-Jam'a wal- Tafreeq bil Hisab al-Hindi, was lost in Arabic but survived in a Latin translation. His book on algebra, Al-Maqala fi Hisab-al Jabr wa-al- Muqabilah, was also translated into Latin in the 12th century, and it was this translation which introduced this new science to the West "completely unknown till then". He astronomical tables were also translated into European languages and, later, into Chinese. His geography captioned Kitab Surat-al-Ard, together with its maps, was also translated. In addition, he wrote a book on the Jewish calendar Istikhraj Tarikh al-Yahud, and two books on the astrolabe. He also wrote Kitab al-Tarikh and his book on sun-dials was captioned Kitab al-Rukhmat, but both of them have been lost.


The influence of Khawarizmi on the growth of science, in general, and mathematics, astronomy and geography in particular, is well established in history. Several of his books were readily translated into a number of other languages, and, in fact, constituted the university textbooks till the 16th century. His approach was systematic and logical, and not only did he bring together the then prevailing knowledge on various branches of science, particularly mathematics, but also enriched it through his original contribution. No doubt he has been held in high repute throughout the centuries since then.

[absente]

He did all this work in what??? Think Lyna think....

ARABIC


The work was done in ARABIC: (Library of Congress)

Muḥammad ibn Mūsā al-Khwārizmī (fl. c. 200/815) : texts and...

LC Control No.: 2003458198LCCN Permalink: http://lccn.loc.gov/2003458198 Type of Material: Book (Print, Microform, Electronic, etc.) Main Title: Muḥammad ibn Mūsā al-Khwārizmī (fl. c. 200/815) : texts and studies / collected and reprinted by Fuat Sezgin ; in collaboration with Mazen Amawi, Carl Ehrig-Eggert, Eckhard Neubauer. Published/Created: Frankfurt am Main : Institute for the History of Arabic-Islamic Science at the Johann Wolfgang Goethe University, 1997. Description: 4 v. : ill. ; 25 cm.

[absente]

Waou

You meant to say: Wow

[Apophys]

Lem'hadjeb, c'est berbère ou arabe ? Parce que j'en ai envie de beau matin. Peu importe le chiffre, ça sera toujours bon.

[Océane]

Apo

... Quand tu auras la réponse ... Tu partageras une mahdjouba avec moi ... peu importe, berbère ou arabe ... el mouhim t'koun bien "harra" ...

[absent]

bon alors vous êtes arrivés où ?

[Océane]

ProDZ

... Mazalhoum ... fi la date et le lieu de naissance ... mazal ma lahkouch lel djanazza ...

[rosier belda]

.................................................. ................pour complément d'informations