## Al-Khawarizmy: His Influence Today (PICTURES)...

posted by Salma Ehab El Maghraby

His book “The Description of Earth” put the basis for map drawing today. This is an algebraic function inspired by Al-Khawarizmy. This Algebra book shows Al-Khawarizmy’s influence and work. This is influenced by Al-Khawarizmy’s work. This shape of the globe was inspired by Al-Khawarizmy’s work. This mathematical scale aided Al-Khawarizmy’s work. A calculator which is inspired by Al-Khawarizmy. A more advanced calculator also inspired by Al-Khawarizmy. Protractor was developed and inspired by Al-Khawarizmy. This graph is made possible because of Al-Khawarizmy’s...

## Ibn Yunus

posted by Donia Sameh Aly

General Information: Ibn Yunus was in a family of scholars, his father Abd Al Rahman was being noted as a historian, Ibn Yunus’s full name is Abu’l-Hasan Ali ibn Abd al-Rahman ibn Ahmad ibn Yunus al-Sadafi. Information about his early life and education is uncertain but we know for sure is that he was born in Egypt between 950 and 952 and came from a respected family in the Fustat; the Fustat is actually Cairo nowadays. As a young man he witnessed the Fatimid conquest of Egypt and the foundation of Cairo in 969. “He served two Caliphs of the dynasty, Al-Aziz and Al-Hakim, making astronomical observations for them between the years of 977-1003.” His major work Al-Zij Al-Hakimi AlKabir was dedicated to the second Caliph he worked for, Al-Hakim. Al Zij is an astronomical handbook with tables; this significant work is what made him famous and influential. Through his Hakimi Zig he reached a high level of complication in trigonometry, the Zij also outlines several formulae for use in spherical astronomy. The Zij was unusual because it records a large number of observations, both Ibn Yunus’s own and those of previous observers. Ibn Yunus’s Zij was intended to replace the Mumtahan Zij of Yahiya ibn Abi Masur, prepared for the Abbasid Caliph Al-Ma’mun in Baghdad 200 years before. Ibn Yunus often compared his own observations with the other observations in the other old Zij. He is nowadays described as an “eccentric, careless and absent-minded man who had a comic appearance”. One day in the year 1009 when he was in good health, he predicted his own death after exactly 7 days, a week. He locked himself in his house and “washed the ink off his manuscripts and recited the Quran until he died...

## El-Khwarizmi writing piece...

posted by Yusuf Akram

Muhammad Ibn Musa al-Khwarizmi was a Persian mathematician and astronomer who was believed to have been born around 800 CE and died in 850 CE during the Islamic Empire, in the middle-ages. Al-Khwarizmi was known for the book he wrote about algebra. He also wrote a book about Hindu Arabic numbers and how to use them. His work was impacting in the understanding and knowledge of math in the middle ages as mathematicians in Europe read his book. They began to use these Arabic numbers 0, 1, 2, 3, 4 and so on which are now used as English the English numbers and used them instead of the Roman numerals I, II, III, IV, V and so on The Arabic number system makes it easier to do mathematics with, as Roman numbers have no place values. This means that they can only deal with whole numbers and do simple equations. Roman numerals also have no number zero. El Khwarizmi also influenced the math problems today because he had a lot to do with trigonometry with sines and cosines. He also influenced astronomy today because he made a table called “The Sind and Hind” which is a work consisting of approximately 37 chapters on calendric and astronomic calculations. He also impacted of algebra because he is the one that invented the Arabic numerals that everyone uses today and even the term algebra came from the world aljabr which is the beginning of the title of the book. He wrote a book on Algebra named “Al-Jabr Wal Muqibla” in which he introduced his own number system and also introduced Arabic numerals. His books were translated into Greek, Latin and other languages. They named his books “So said Algorizmi” because they wanted the people to know his of books through many names. The word Algorithm...