Superellipse
A curve of the form
where
. ``The'' superellipse is sometimes taken as the curve of the above form with 
. Superellipses with
are also known as Lamé Curves. The above curves are for 
, 
, and 
, 3.0,and 3.5.
A degenerate superellipse is a superellipse with 
. The above curves are for , , and 
, 1.0, 1.5,and 2.0.
References
Gardner, M. ``Piet Hein's Superellipse.'' Ch. 18 in Mathematical Carnival: A New Round-Up of Tantalizers and Puzzles from Scientific American. New York: Vintage, 1977.
- Abel's Identity
- Abel's Impossibility Theorem
- Abel's Inequality
- Abel's Irreducibility Theorem
- Abel's Lemma
- Abel's Test
- Abel's Theorem
- Abel's Uniform Convergence Test
- Abel Transform
- Abhyankar's Conjecture
- Ablowitz-Ramani-Segur Conjecture
- Abscissa
- Absolute Convergence
- Absolute Deviation
- Absolute Error
- Absolute Geometry
- Absolutely Continuous
- Absolute Pseudoprime
- Absolute Square
- Absolute Value
- Absorption Law
- Abstraction Operator
- Abundance
- Abundant Number
- Acceleration