Kernel

Kernel may refer to:

Computing

Kernel (operating system), the central component of most operating systems
Kernel method, in machine learning
compute kernel, in GPGPU programming
Kernel (image processing), a matrix used for image convolution
In numerical programming, a subroutine that performs a common numerical operation
- In particular, a routine that is executed in a vectorized loop; see, e.g., General-purpose computing on graphics processing units § Kernels
Kernelization, a technique for designing efficient algorithms

Kernel (algebra), in algebra
Kernel (linear algebra), the set of all vectors which map to the zero vector
Kernel (category theory), in category theory
Kernel (set theory), the set of all pairs of elements that map to the same value
Equalizer (mathematics), the set of all elements where the values of two functions coincide

Integral kernel, a function of two variables that defines an integral transform
Heat kernel, the fundamental solution to the heat equation on a specified domain
Convolution kernel
kernel (statistics), a weighting function used in kernel density estimation to estimate the probability density function of a random variable
Stochastic kernel, the transition function of a stochastic process
Pricing kernel, the stochastic discount factor used in mathematical finance
Positive-definite kernel, a generalization of a positive-definite matrix
Kernel trick, in statistics
Reproducing kernel Hilbert space
Kernel (geometry), the set of points within a polygon from which the whole polygon boundary is visible

Seed, inside the nut of most plants
- Corn kernel
- Palm kernel
- Kernels Popcorn Limited, the largest retail popcorn chain in the world.
Atomic nucleus

Kernel (digital media company), an e-commerce website
Kernel (EP), by the band Seam
Pricing kernel, another name for the stochastic discount factor used in asset pricing
Kernel (Lilo & Stitch), experiment 014 from the Lilo & Stitch cartoon series
Kernel Fleck, a character in the Demonata series of books