Advancements in Mathmatics: 150 CE – 1000CE

190 CE

The first mention of the suanpan in print, (Chinese abacus) which was widely used until the invention of the modern calculator. 1

639 CE

Indian mathematician Brahmagupta was the first to describe the modern place-value numeral system.

820 CE

Persian mathematician, Muḥammad ibn Mūsā al-Khwārizmī, described the rudiments of modern algebra.

850 CE

Arab mathematician Al-Kindi (Alkindus), was a pioneer of cryptography. He gave the first known recorded explanation of cryptanalysis in A Manuscript on Deciphering Cryptographic Messages. 2

1000 CE

Abū Rayhān al-Bīrūnī invented the Planisphere an early analog computer.


 

GOB
In 2002, a Gate of Battlecrypt appeared in the Kingdom of Ehb. Can you name the Game?