# Symbols:K

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## kilo-

$\mathrm k$

The Système Internationale d'Unités metric scaling prefix denoting $10^{\, 3 }$.

Its $\LaTeX$ code is \mathrm {k} .

## Subgroup

$K$

Frequently used, in conjunction with $H$, to represent a general subgroup of a given group $G$ when two such subgroups need to be discussed.

## Field

$K$

One of the letters used as a variable denoting a general field.

### Field as an Algebraic Structure

$\left({K, +, \circ}\right)$

The full specification for a field, where $+$ and $\circ$ are respectively the addition and product operations.

The $\LaTeX$ code for $\left({K, +, \circ}\right)$ is \left({K, +, \circ}\right) .

## Kernel

$K$

Often used to denote the kernel of a general homomorphism