Saddle Point (Function)
A Point of a Function or Surface which is a Stationary Point but not an Extremum.An example of a 1-D Function with a saddle point is 
, which has
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This function has a saddle point at
by the Extremum Test since 
and 
.An example of a Surface with a saddle point is the Monkey Saddle.- Frobenius-König Theorem
- Frobenius Map
- Frobenius Method
- Frobenius-Peron Equation
- Frobenius Pseudoprime
- Frobenius Theorem
- Frobenius Triangle Identities
- Frontier
- Frullani's Integral
- Frustum
- Fréchet Bounds
- Fréchet Derivative
- Fréchet Space
- Fubini Principle
- Fuchsian System
- Fuchs's Theorem
- Fuhrmann Circle
- Fuhrmann's Theorem
- Fuhrmann Triangle
- Fuller Dome
- Full Reptend Prime
- Full Width at Half Maximum
- Function
- Functional
- Functional Analysis