Anasofia Arango

Symbolic Algebra

1500 BCE

During this time the development of symbols to represent operations was created during this time. The common symbols created, that we are still using constantly today include the plus sign for addition,the minus sign for subtraction,the times sign for multiplication,and the division sign for division.

Chinese Algebra Writing

100 BCE

Before the Chinese wrote the Babylonians were figuring out quantities and using variables and formulas to create equations. Then the Chinese began writing their own theories and opinions on the equations and formulas for algebra.

Brahmagupta

598

He was known for creating rules when encountering zero,negative numbers,and positive numbers. He also evaluated negative roots of quadratic equations and the solutions of those equations with two unknown variables or unknown numbers.

Arabic Scholars.

800

The Arabic Scholars used their language to describe algebra terms that have been passed on that we are still using and being taught to used in our vocabulary today.

Muhammad ibn Musa Al-Khwarizmi

800

What he created during the medieval times was he used the Indian numbers and he used the alphabet to represent numbers in equations. He was also responsible for using decimal notations and being the first to use numeration by position.

Omar Khayyam

1070

Omar created the foundations of algebraic geometry and found the solutions to cubic equations. He created a book that demonstrates algebraic equations,due to his ideas then was passed on important principles through to Europe.

Madhava

1425

Madhava used different series of fractions to determine the exact formula to solve “pie” he also used a formula called the sine formula and trigonometric functions that played a very important role in the development of calculus.

Robert Recorde

1510

Robert was responsible for creating the equal sign that is used in an equation to represent the solution to an equation. Robert also published a book called “The Grounde of Artes”,which was his first book about algebra. He then published another book called “ The Whetstone of Witte” which introduced his creation of the equal sign.

Françoise Vièta

1540

From the rules and ideas of Al-Khwarizmi to solve different types of algebraic problems,then developed the idea by Françoise that the use of letters like “x” was to stand for different sets of numbers.

French Philosophy

1637

The development that took place in the 9th century of the symbols of unknown quantities and ideas of algebraic powers and operations. Due to this development a French philosopher created a book based on this important development called “Book III of La géometrie” and he explained rules and theories on true and false numbers or how we say it today positive and negative numbers.