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350
Zero
First developed by Mayans. It can stand for no value, be a place holder for numbers such as 10, 100, even 0.001 or 0.0002. Help of many cultures to create the current version we use today. Made calculus, economics, and other such studies -
530
Pythagorean theorem 530 B.C.
Developed in greece, by the mathematician pythagoras. It is used to find the missing side of a right triangle when you know the other 2 sides. It follows the formula a^2+b^2=c^2. and is used for right triangles alone. It can find any of the sides. -
Jan 1, 600
Negative numbers
discovered in teh 7th century by the indian mathematician Brahmagupta. But wer soon said to not exist by British mathematician Francis Maseres. However this concept was discovered much earlier by the chinese, as is shown in their number system. i chose this topic because i always wanted to know the history of negative numbers -
May 23, 600
Irrational Numbers ~600 B.C.
Irrational numbers were first discovered in Ancient Greece. Possible by a pythagorean named Hippasus of Metapontum.This was discovered during the creation of the pythagorean theorem, that in some triangles there must be some value that can fit in when no rational number can. This led to the discovery of irrational numbers.Although indians looked into this back in 800 B.C.. I decided to research this to find out how these numbers were discovered -
Jan 1, 1100
Egyptian Math
Invented during the 12th century by egyptian scientists. Is made up of symbols that stand for values such as 1, 10, 100,1000,10000,100000,1000000. only goes up to 9,999,999 since their highest value picture is worth 1 million. Found in drawings all over egypt. -
Tesselations
Invented in 1619 by Johannes Kepler.Perfected with the contribution of many cultures such as Russian and Dutch.It involves the repetition of a polygon or other figure to create an artistic drawing with no gaps between the figures. These patterns are often used in flooring. -
Fractions 1800 BC
Finalized Fractions with the bar was created by the arabs with contribution of other cultures before them. Fractions are used to symbolize the values between integers and are the basis for rational and irrational numbers. For a fraction is a ratio and an irrational number cannot be turned into a fraction. -
Quadratic Equations 2000 B.C.
Quadratic equations were created around 2000 B.C.E and are a way to solve problems in the form ax^2+b^x+c where a does not equal zero. It had the contribution of many mathematicians including pythagoras and euclid. I picked this topic because i am very interested in quadratic equations. -
Algebra
To find the “unknown value” in the form of a letter within a math problem.Many mathematicians contributed to it. First developed by the arabians, specifically Mahommed ben Musa al-Khwarizmi.Abstract algebra is more complicated with rings, -
Circles 9500 B,C.
In Plato's Seventh Letter there is a detailed definition and explanation of the circle. Plato explains the perfect circle, and how it is different from any drawing, words, definition or explanation. Thus Plato defines the circle as we know it today and not as they thought it was back then.However it was the egyptians Rhind papyrus that first discovered a way to find an area of a circular field. I chose this because i was curious to how circles were discovered since they don't occur in nature
