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$\mathrm h$

The Système Internationale d'Unités symbol for the metric scaling prefix hecto, denoting $10^{\, 2 }$, is $\mathrm { h }$.

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

Celestial Altitude


Let $X$ be a point on the celestial sphere.

The (celestial) altitude of $X$ is defined as the angle subtended by the the arc of the vertical circle through $X$ between the celestial horizon and $X$ itself.

It is usually denoted by $h$.



Frequently used to represent a general subgroup of a given group $G$.


$\map h x$

The letter $h$, along with $f$ and $g$, is frequently used to denote a general mapping or function.

The $\LaTeX$ code for \(\map h x\) is \map h x .