Complex Number Bags

Description: It's all fun and games until someone loses an eye--or an i, the imaginary number missing from this equation gone wrong. The perfect gift for math teachers, or for anyone who enjoys a geeky pun.

Description: The i, the imaginary number that makes the square root of a negative number possible has fallen. So naturally, it's all fun and games until someone loses an i.

Description: Riemann zeta function is a key topic in number theory and its applications in physics, chemistry, and combinatorics.

Description: Perfect math humor for mathematicians, math teachers, and math students. This design features the witty text: √-4=2 It's All Fun And Games Until Someone Loses An I.

Description: The origin of complex numbers

Description: Leonhard Euler

Description: This is one of the most beautiful results in mathematics, and it's often taught in introductory calculus courses.

Description: This is one of the most beautiful results in mathematics, and it's often taught in introductory calculus courses.

Description: The Mandelbrot set is generated by the iterative equation, complex numbers