Lanczos Sigma Factor
Writing a Fourier Series as
where
is the last term and the 
terms are the Lanczos 
factor, removes the Gibbs Phenomenon(Acton 1990).See also Fourier Series, Gibbs Phenomenon, Sinc Function
References
Acton, F. S. Numerical Methods That Work, 2nd printing. Washington, DC: Math. Assoc. Amer., p. 228, 1990.
- Envelope
- Envelope Theorem
- Envyfree
- e-Perfect Number
- Epicycloid
- Epicycloid--1-Cusped
- Epicycloid--2-Cusped
- Epicycloid Evolute
- Epicycloid Involute
- Epicycloid Pedal Curve
- Epicycloid Radial Curve
- Epimenides Paradox
- Epimorphism
- Epispiral
- Epispiral Inverse Curve
- Epitrochoid
- Epitrochoid Evolute
- Epsilon
- Epsilon-Neighborhood
- Epstein Zeta Function
- Equal
- Equal by Definition
- Equal Detour Point
- Equality
- Equally Likely Outcomes Distribution