About Us

Welcome to Differential Geometry, and thank you for visiting the shop!

I am Andrew D. Hwang. In 1993 I earned my PhD in mathematics at the University of California, Berkeley. After a 30-year career in academia, I founded Differential Geometry to design, manufacture, and sell original, distinctive, high-quality mathematical images and objects that provide pleasant interactions with math and invite deeper engagement for the curious student in each of us.

I develop products to welcome viewers into mathematics: to arouse curiosity and wonder, to convey the beauty of geometry, analysis, and algebra. My primary inspiration is form, accessible to everyone without technical training, as an invitation into abstract realms often seen only at the university level.

My mission includes employing socially and environmentally responsible manufacturing; providing accurate, concrete explanations to accompany products; and maintaining competitive pricing.

I make every effort to sell quality products and provide responsive customer service. Your satisfaction with your purchases is among my highest priorities. If any part of your order is not what you expected, or if a problem beyond normal wear and tear arises at any time with a product you purchased at Differential Geometry, kindly email contact -at- diffgeom -dot- com to let me know. I stand behind what I design and sell, and am happy to work with you.

There are separate pages detailing shipping costs and refund policy.

Andrew D. Hwang