Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

How can I mathematically describe the shape of an idealised bean? (In two dimensions and in threes dimensions)

At the moment I'm calling the shape I refer to an ellipse/ellipsoid on a curved major axis.

share|improve this question
I bet you can make a cardoid look like a bean. –  Alex Youcis Dec 12 '12 at 7:32
For some reason, this made me think of the shape from this question –  mixedmath Dec 12 '12 at 7:36
@Alex Youcis , A cardioid has a sharp indentation, a bean has a smooth indentation –  Elements in Space Dec 12 '12 at 7:46
It is bean-shaped. –  Qiaochu Yuan Dec 12 '12 at 7:47
What kind of bean? There are a number of different types. –  mike4ty4 Dec 12 '12 at 7:50

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.