Английская Википедия:Al-Nayrizi

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Abū’l-‘Abbās al-Faḍl ibn Ḥātim al-Nairīzī (Шаблон:Lang-ar; Шаблон:Lang-fa; Шаблон:Lang-la, Шаблон:CircaШаблон:SndШаблон:Circa) was a Persian mathematician and astronomer from Nayriz, now in Fars Province, Iran.

Life

Little is known of al-Nairīzī, though his nisba refers to the town of Neyriz. He mentioned al-Mu'tadid, the Abbasid caliph, in his works, and so scholars have assumed that al-Nairīzī flourished in Baghdad during this period.Шаблон:Sfn Al-Nairīzī wrote a book for al-Mu'tadid on atmospheric phenomena. He died in Шаблон:Circa.Шаблон:Sfn

Mathematics

Al-Nayrizi wrote a commentary to the translation in Arabic by Al-Ḥajjāj ibn Yūsuf ibn Maṭar of Euclid's Elements. Both the translation and the commentary have survived, as well as a 12th-century Latin translation by Gerard of Cremona. Al-Nayrizi's commentary contains unique extracts of two other commentaries on the Elements, produced by Hero of Alexandria and Simplicius of Cilicia.Шаблон:Sfn

Al-Nairīzī used the Шаблон:Lang, the equivalent to the tangent, as a genuine trigonometric line, as did the Persian astronomer al-Marwazi before him.Шаблон:Sfn He gave a proof of the Pythagorean theorem using the Pythagorean tiling.Шаблон:Sfn

Al-Nayrizi gave a mathematical proof of the parallel postulate based on the assumption that parallel lines are equidistant. He wrote a treatise on an exact method for the numerical determination of the kibla and a text about a device for measuring the heights, widths, and depths.Шаблон:Sfn

Astronomy

Al-Nairīzī wrote a treatise on the spherical astrolabe, an elaborate work that seems to be the best Persian work on the subject. It is divided into four books:Шаблон:Sfn

  1. An historical and critical introduction of the astrolabe;
  2. A description of the instrument; and a comparison with other astronomical instruments;
  3. Applications of the instrument;
  4. Applications of the instrument.

Ibn al-Nadim mentions Nayrizi as a distinguished astronomer with eight works by him listed in his book al-Fihrist.Шаблон:Citation required

Al-Nayrizi's most important astronomical works, his commentary on Ptolemy's Almagest and both his zijes, are lost. He produced treatises on the spherical astrolabe and astrological conjunctions, both of which are extant.Шаблон:Sfn

References

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Sources

Texts and translations

Further reading

External links

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