Sampling Function
The 1-D sampling function is given by
where
is the Dirac Delta Function. The 2-D version is
which can be weighted to
where
is a reliability weight, 
is a density weight (Weighting Function), and 
is a taper.See also Shah Function, Sinc Function- Inner Product
- Inner Product Space
- Inradius
- Inscribed
- Inscribed Angle
- Inside-Outside Theorem
- Insphere
- Instrument Function
- Insufficient Reason Principle
- Int
- Integer
- Integer Division
- Integer Factorization
- Integer-Matrix Form
- Integer Module
- Integer Part
- Integer Relation
- Integer Sequence
- Integrable
- Integral
- Integral Brick
- Integral Calculus
- Integral Cuboid
- Integral Current
- Integral Curvature