THE LAND OF CRECENT

"This fertile crescent is approximately a semicircle, with the open side toward the south, having the west end at the southeast corner of the Mediterranean, the center directly north of Arabia, and the east end at the north end of the Persian Gulf."

Al-Khwarizmis Planisphere

Al-Khwarizmis Planisphere

Al Khwariz Algebra PAGE

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Al Khwariz Algebra PAGE

Ancient text in new outlook by Al Khwarizmi

Al-Khwarizmi's text can be seen to be distinct not only from the Babylonian tablets, but also from Diophantus' Arithmetica. It no longer concerns a series of problems to be resolved, but an exposition which starts with primitive terms in which the combinations must give all possible prototypes for equations, which henceforward explicitly constitute the true object of study. On the other hand, the idea of an equation for its own sake appears from the beginning and, one could say, in a generic manner, insofar as it does not simply emerge in the course of solving a problem, but is specifically called on to define an infinite class of problems.

Arabic mathematics ALGEBRA

Perhaps one of the most significant advances made by Arabic mathematics began at this time with the work of al-Khwarizmi, namely the beginnings of algebra. It is important to understand just how significant this new idea was. It was a revolutionary move away from the Greek concept of mathematics which was essentially geometry. Algebra was a unifying theory which allowed rational numbers, irrational numbers, geometrical magnitudes, etc., to all be treated as "algebraic objects". It gave mathematics a whole new development path so much broader in concept to that which had existed before, and provided a vehicle for future development of the subject. Another important aspect of the introduction of algebraic ideas was that it allowed mathematics to be applied to itself in a way which had not happened before..

root is given by the steps,

In modern notation this process, with 'x' the "thing" (shay') or "root", is given by the steps,
(10 − x)2 = 81x
x2 + 100 = 101x
Let the roots of the equation be 'p' and 'q'. Then , pq = 100 and

So a root is given by (10 − x)2 = 81x
x2 + 100 = 101x
Let the roots of the equation be 'p' and 'q'. Then , pq = 100 and

So a root is given by




Several authors have also published texts

Compare with modern mathematical notation

The above discussion uses modern mathematical notation for the types of problems which the book discusses. However, in al-Khwārizmī's day, most of this notation had not yet been invented, so he had to use ordinary text to present problems and their solutions. For example, for one problem he writes,
If some one say: 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 thing, multiplied by itself, is a hundred plus a square less twenty things, and this is equal to eighty-one things. Separate the twenty things from a hundred and a square, and add them to eighty-one. It will then be a hundred plus a square, which is equal to a hundred and one roots. Halve the roots; the moiety is fifty and a half. Multiply this by itself, it is two thousand five hundred and fifty and a quarter. Subtract from this one hundred; the remainder is two thousand four hundred and fifty and a quarter. Extract the root from this; it is forty-nine and a half. Subtract this from the moiety of the roots, which is fifty and a half. There remains one, and this is one of the two parts.

method of solving linear and quadratic equations

Al-Khwārizmī's method of solving linear and quadratic equations worked by first reducing the equation to one of six standard forms (where b and c are positive integers)
squares equal roots (ax2 = bx)
squares equal number (ax2 = c)
roots equal number (bx = c)
squares and roots equal number (ax2 + bx = c)
squares and number equal roots (ax2 + c = bx)
roots and number equal squares (bx + c = ax2)
by dividing out the coefficient of the square and using the two operations al-jabr and al-muqābala ("balancing"). Al-jabr is the process of removing negative units, roots and squares from the equation by adding the same quantity to each side. For example, x2 = 40x − 4x2 is reduced to 5x2 = 40x. Al-muqābala is the process of bringing quantities of the same type to the same side of the equation. For example, x2 + 14 = x + 5 is reduced to x2 + 9 = x.

Al Khwarizmi Latin Book

The Compendious Book on Calculation by Completion and Balancing is a book written approximately 830 CE. The book was written with the encouragement of the Caliph al-Ma'mun as a popular work on calculation and is replete with examples and applications to a wide range of problems in trade, surveying and legal inheritance.The term algebra is derived from the name of one of the basic operations with equations (al-jabr, meaning completion, or, subtracting a number from both sides of the equation) described in this book. The book was translated in Latin as Liber algebrae et almucabala by Robert of Chester,hence "algebra", and also by Gerard of Cremona. A unique Arabic copy is kept at Oxford and was translated in 1831 by F. Rosen. A Latin translation is kept in Cambridge.
This book is considered the foundational text of modern algebra. It provided an exhaustive account of solving polynomial equations up to the second degree,and introduced the fundamental methods of "reduction" and "balancing", referring to the transposition of subtracted terms to the other side of an equation, that is, the cancellation of like terms on opposite sides of the equation.

AL Jabr BOOKS

Al-Kitāb al-mukhtaṣar fī ḥisāb al-jabr wa-l-muqābala ( الكتاب المختصر في حساب الجبر والمقابلة

Akkadian - Sumerian clay cover letter Judgement

Father of the ADARSH,Youngest Stamp collector,1998

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President of INDIA & C M of AP released Book on 500 years of SriKrishnaDevaraya
With my paper on ROCK IRRIGATION OF VIJAYANAGARA EMPIRE[sept2010]
125 Years of congress celebrations at Gandhi Bhavan HYD,,CM,PCC President,
Jaipal ReddyDigvijay Singh,inaugurated,Photo and Stamp Exhibition of my son ADARSH.
PRIME MINISTER of INDIA Shri.Rajiv Gandhi released my BOOK,1989
Gave RAHUL GANDHI Telangana Satavahana coin in March 2010,
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Calculated velocity of light from Maha Bharata,1012AD,Indian Epic,1986


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