parabolic partial differential equation
where A,B,C,D,E,F,G are functions of x and y is parabolic, elliptic, or hyperbolic when B2–4AC is zero, negative, or positive, respectively. So the heat equation is parabolic, Laplace's equation is elliptic, and the wave equation is hyperbolic.
- free group
- freely hinged
- free module
- Frege, (Friedrich Ludwig) Gottlob
- frequency
- frequency
- frequency analysis
- frequency distribution
- frequentist inference
- Freudenthal, Hans
- Frey's curve
- friction
- frieze group
- Frobenius endomorphism
- Frobenius, (Ferdinand) Georg
- Frobenius normal form
- from above, from the right
- from below, from the left
- frontier
- FRS
- frustum
- Fry, Hannah
- Fubini's Theorem
- fulcrum
- full angle