who invented the decimal system and concept of zero
0 The Italian mathematician Fibonacci (c. 1170–1250), who grew up in North Africa and is credited with introducing the decimal system to Europe, used the term zephyrum. This became zefiro in Italian, and was then contracted to zero in Venetian. The Italian word zefiro was already in existence (meaning "west wind" from Latin and Greek zephyrus) and may have influenced the spelling when transcribing Arabic ṣifr.[9]
Vikramashila Vikramashila was founded by
One Ring One ring to rule them all, one ring to find them,One ring to bring them all and in the darkness bind them.
Knot (unit) Etymologically, the term derives from counting the number of knots in the line that unspooled from the reel of a chip log in a specific time.