ca. 250lDIOPHANTUS OF ALEXANDRIAis the first to use symbols to
represent unknown quantities.400 lHYPATIAbecomes head of the Platonist school in Alexandria,
where her lectures include philosophy and mathematics.415 lA mob of Christians attack and murder Hypatia for her
scientific and philosophical ideas because they are thought
to be pagan.ca. 500lA Greek anthology is compiled that contains the now-famous
puzzle: Diophantus spent– 61 of his life in childhood, 12 –^1 in
youth,– 71 more as a bachelor; five years after his marriage, his
son was born, who died four years before Diophantus at half
his age, so how long did Diophantus live?665 lBRAHMAGUPTAinvents the concept of ZERO.
ca. 800lArabian ABU JA’FAR MUHAMMAD IBN MUSA AL-KHWARIZM ̄ ̄I
writes one of the most important mathematical texts of all
time, using al-gebr to work through real-life problems with
calculations of NATURAL NUMBERs, EQUATIONs, and
FRACTIONs. This is the first recorded work to introduce the
system of base 10 numbers.850 lThe Ganita Sera Samgrahais written by MAHAVIRAas an
expansion of Brahmagupta’s work, and becomes the first
Indian book devoted solely to mathematics.1027 lABU ALI AL-HASAN IBN AL-HAYTHAMwrites his
autobiography.1079 lOMAR KHAYYAMworks on reforming the calendar, and gives
the length of the year as 365.24219858156 days, remarkably
close to the length of 365.242190 known today.1100 lAl-Khw ̄arizm ̄ı’s work, Al-gebr,is translated into Latin,
giving us the term algebra.1202 lLEONARDO PISANO FIBONACCIwrites Liber abbaci,his first
book on mathematics, which is responsible for changing the
calculating methods of Europe from the ROMAN NUMERAL
system to Arabic numbers. This book also is the firstca. 250 C.E. – 1202 C.E. CHRONOLOGY
ca. 250 C.E. – 1202 C.E. CHRONOLOGY