Kernel

Kernel may refer to:

Computing

Kernel (image processing), a matrix used for image convolution
Kernel (operating system), the central component of most operating systems
Compute kernel, in GPGPU programming
Kernel method, in machine learning
In numerical analysis, 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

Mathematics

Objects

Kernel (algebra), a general concept that includes:
- Kernel (linear algebra) or null space, a set of vectors mapped to the zero vector
- Kernel (category theory), a generalization of the kernel of a homomorphism
- Kernel (set theory), an equivalence relation: partition by image under a function
- Difference kernel, a binary equalizer: the kernel of the difference of two functions

Functions

Kernel (geometry), the set of points within a polygon from which the whole polygon boundary is visible
Kernel (statistics), a weighting function used in kernel density estimation to estimate the probability density function of a random variable
Integral kernel or kernel function, 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
Stochastic kernel, the transition function of a stochastic process
Transition kernel, a generalization of a stochastic kernel
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

Natural sciences

Seed, inside the nut of most plants, especially:
Atomic nucleus, the center of an atom

Other uses

Kernel (digital media company), an e-commerce website
Kernel (EP), by the band Seam
Kernel (neurotechnology company), a developer of neural interfaces
Kernel Fleck, a character in The Demonata series of books
The Kernel Brewery, a craft brewery in London
The Kernel, an Internet culture website, now part of The Daily Dot

People

Brigitte Kernel (born 1959), French journalist and writer

gollark: Are the integral and derivative ones actually saying the same thing? The derivative ones look less complex.

gollark: So you can just use P=IV with that, as you can work out the voltage.

gollark: voltage on primary/voltage on secondary = turns on primary/turns on secondary if I remember right, and the power on both things is the same (ignoring losses).

gollark: Just solve for a.

gollark: v = end velocity, u = start velocity, a = acceleration, s = distance.