Regular Surface
A Subset 
is called a regular surface if for each point 
, there exists aNeighborhood 
of 
in 
and a Map 
of an Open Set 
onto 
such that
- 1.
is differentiable, - 2.
is a Homeomorphism, and - 3. Each map
is a Regular Patch.
References
Gray, A. ``The Definition of a Regular Surface in .'' §10.4 in Modern Differential Geometry of Curves and Surfaces. Boca Raton, FL: CRC Press, pp. 195-200, 1993.
- Napier's Bones
- Napier's Constant
- Napier's Inequality
- Napkin Ring
- Napoleon Points
- Napoleon's Problem
- Napoleon's Theorem
- Napoleon Triangles
- Nappe
- Narcissistic Number
- Nash Equilibrium
- Nash's Theorem
- Nasik Square
- Nasty Knot
- Natural Density
- Natural Equation
- Natural Independence Phenomenon
- Natural Invariant
- Natural Logarithm
- Natural Measure
- Natural Norm
- Natural Number
- Naught
- Navigation Problem
- N-Cluster