Torispherical Dome
A torispherical dome is the surface obtained from the intersection of a Spherical Cap with a tangent Torus,as illustrated above. The radius of the sphere 
is called the ``crown radius,'' and the radius of the torus is called the``knuckle radius.'' Torispherical domes are used to construct pressure vessels.
- Type I Error
- Type II Error
- Ulam Map
- Ulam Number
- Ulam Sequence
- Ulam's Problem
- Ultrametric
- Ultraradical
- Ultraspherical Differential Equation
- Ultraspherical Function
- Ultraspherical Polynomial
- Umbilic Point
- Umbral Calculus
- Umbrella
- Unambiguous
- Unbiased
- Uncia
- Uncorrelated
- Uncountable Set
- Uncountably Infinite Set
- Undecagon
- Undecidable
- Undecillion
- Undetermined Coefficients Method
- Undulating Number