Symbols: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 multiplication operations.

Its LaTeX code is \left({K, +, \circ}\right).