hyperboloid of two sheets
The axial planes are planes of symmetry. The section by a plane z = k parallel to the xy‐plane is, when non‐empty, an ellipse (a circle if a = b). When −c Hyperboloid of two sheets in normal form
- resonance
- response bias
- response variable
- rest frame
- rest mass
- restriction
- resultant
- retardation
- retraction
- reverse mathematics
- reverse triangle inequality
- reversion to the mean
- revolution
- revolve
- Reynolds number
- Reynolds transport theorem
- rhombohedron
- rhombus
- RHS
- RI
- Riemann, (Georg Friedrich) Bernhard
- Riemann hypothesis
- Riemannian manifold
- Riemann integral
- Riemann-Lebesgue lemma