Swallowtail Catastrophe
A Catastrophe which can occur for three control factors and one behavior axis. The equations
 |  |  | |
 | |  | |
 | |  |
display such a catastrophe (von Seggern 1993, Nordstrand). The above surface uses
and 
.
References
Nordstrand, T. ``Swallowtail.'' http://www.uib.no/people/nfytn/stltxt.htm. von Seggern, D. CRC Standard Curves and Surfaces. Boca Raton, FL: CRC Press, p. 94, 1993.
- ASA Theorem
- Aschbacher's Component Theorem
- A-Sequence
- Associative
- Associative Algebra
- Associative Magic Square
- ASS Theorem
- Astroid
- Astroidal Ellipsoid
- Astroid Evolute
- Astroid Involute
- Astroid Pedal Curve
- Astroid Radial Curve
- Asymptosy
- Asymptote
- Asymptotic
- Asymptotic Curve
- Asymptotic Direction
- Asymptotic Notation
- Asymptotic Series
- Atiyah-Singer Index Theorem
- Atkin-Goldwasser-Kilian-Morain Certificate
- Atomic Statement
- Attraction Basin
- Attractor