N-Dimensional Half-Lines
Definition
Given nonzero $x \in \R ^n$, the
half-line emanating from
$x$ is the set
\[
\Set{\lambda x}{\lambda \geq 1}
\] \[
\Set{\lambda x}{x \geq 0}
\]
Given nonzero $x \in \R ^n$, the
half-line emanating from
$x$ is the set
\[
\Set{\lambda x}{\lambda \geq 1}
\] \[
\Set{\lambda x}{x \geq 0}
\]