Ghayath Al-Din Al-Kashi

Ghayath Al-Din Jamshid bin Masoud bin Mohammed Al-Kashi (deceased in 839 A.H./1436 AD) is one of the greatest known figures in the nineteenth century Al-Hijri in wisdom, mathematics, astronomy, stars and others.

He was born in the city of Kashan, in Persia, where he lived for a while and then moved on to another place.

Al-Kashi studied grammar, morphology, jurisprudence, and logic, then studied mathematics and excelled in it.

Not surprisingly, his father was a great mathematician and astronomer. Al-Kashi lived most of his life in Samarkand, where he built an observatory he called “Samarkand Observatory.”

He went to Samarkand at the invitation of Ulg Bek, who was then ruling the country, and was said to have been a passionate scientist, and there in Samarkand he put in his most famous work that introduced people to him.

Although Al-Kashi is known for his high reputation in clothing, observatories, mathematics and other scholarly positions,

He did not know his right to the books of translation and history, and he did not, like many other prominent thinkers in Islam.

He's one of the three people who's been very good at helping Olg Beck get his interest in math and astronomy, and one of the three people whose known for their interest in math and astronomy is : Ghiath al-Din al-Kashi, Qadi Zada Rumi and Ali al-Quashi, who worked and took part in the Samarkand Observatory, helped Ulg Bek perform surveillance and fashion work.

The observatory was one of the wonders of its time and was equipped with large tools and precision machines.

Al-Kashi was famous in the department's flag. He also explained a lot about the production of astronomers who worked with Nosseir al-Din al-Tusi at the Maraghah Observatory, and he also achieved the star charts that the observers put up.

Al-Kashi accurately estimated the eclipse of the Sun during three years (between 809 A.H. and 811 E/1407 and 1409 A.D.).

He first discovered that the orbits of the moon and mercury are elliptical.

In math, Cachy invented decimals, and Smith says in his book History of Mathematics :

“The dispute between mathematicians is considerable, but most of them agree that it was the shisha that invented the decimal."

Al-Kashi also developed a law on the total number of natural numbers raised to the fourth power.

Speaking of Muslim astronomers, Carrady Vaux says : "And then Al-Kashi comes in and gives us a way to combine the number sequence up to the fourth power, which is a way that you can't do with a little genius."

author.

and wrote a lot of writings in Arabic and Persian,

Persian compositions
(The Book of Zig Al-Khaqani), which scrutinized the startables placed by the observers in a quandary under the supervision of Noseir El-Din Al-Tusi.

There was more mathematical evidence and astronomical evidence that there was in the previous fashion.

Arabic Literature
Dimensions and Objects. There is a copy of it in the books on Fadil Khan School in Khorasan Province written in 859 AH.

(Park Walk) He is looking at the use of the machine called "Plate of Regions", which he made for the Samarkand Observatory and is said : It's that with this machine that you can get planetary calendars and show them, and then with eclipse and eclipse, and with respect to them, and it's found a copy of it in Kazan, Prussia.

(Message of Peace of Heaven) looking for the dimensions of the objects.
(The message of the ocean) is looking at how to determine the ratio of the circumference to its diameter.

By saying my fate Hafez Toukan (Arab scientific heritage), Samth was quoted as saying : Kashi has created this ratio to an unprecedented scale, which has reached 16 decimal places, a ratio not reached by Greek scientists,

Greek scientists and Chinese scientists, and Smith admits that Kashi-era Muslims beat Europeans in the use of the decimal system, and that they were very familiar with the decimals.

(Letter of Sine and Hypotenuse) in geometry.

The book is one of the most important and complete in 1427. It includes some discoveries in the calculation.

It is characterized by the author's status as a textbook for the students in Samarkand.

One of his discoveries included in this book was that he found an algorithm to calculate the nuclear roots of any number, which was considered a special case for the methods that were discovered centuries later by Horner.

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