The symbols we use every day have fascinating and surprisingly recent origins, explains author Joseph Mazur in his new book A few years ago friends and I were talking about the origins of written ...

Excerpted with permission from Our Mathematical Universe: My Quest for the Ultimate Nature of Reality, by Max Tegmark. Available from Random House/Knopf. Copyright ...

I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...