Definition:Letter L

Definition
The letter $\mathsf L$ is the topological subspace of the real number plane $\R^2$ under the Euclidean topology defined as:


 * $\mathsf L := \paren {\closedint 0 1 \times \set 0} \cup \paren {\set 0 \times \closedint 0 1}$


 * Letter-L.png

Also see

 * Definition:Letter T