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Created by Lil Thompson

Events

Chinese mathematics developed using negative numbers, decimals,
algebra and geometry. This would allow for more complex mathematics.The Hindu-Arabic number system was completed.
This formed the basis
for the digits 1 through 9.The equals sign was invented by a welsh
author. he was
named Robert Recorde.most mathematical symbols were invented.
This allowed people to
write the symbols instead of words.Ancient Egyptians started using
complex mathematics like
algebra arithmatic and geometry.Including methods of approximating
the area of circles.Brahmagupta, a Hindu astronomer made sense of negative numbers and zero.
This allowed for more complex equation at and below zero.Pythagoras discovers that the three
angles of a triangle always add to 180 degrees.Eratosthenes calculates the circumference of the earth. He figures
out the difference in angle of the sun between
Aswan and Alexandria and uses that.The Sumerians invent the first numeral system.
This means they can now write numbers.
Therefore they can write equations
with numbers.First recorded use of + and - by Joannes Widdman.
This appeared in his book on arithmetic.