thumbs.pro : historical-nonfiction: Historians have just discovered the oldest reference to the mathematical concept of “zero” in India. The concept of zero as a number was revolutionary in mathematics. In Eurasia, the idea came from India (and the Mayans separately

published on: 2017-10-20 00:11:40

Who Invented The Patent?

asktheanalyst.tumblr.com/post/166481685472/

vintageeveryday:Flat Iron Building, Madison Square, New York,

asktheanalyst.tumblr.com/post/166628869367/

asktheanalyst.tumblr.com/post/166897038627/

Awesome!