Symbols:H

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hecto-

$\mathrm h$

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

$h$


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 $h$.


Subgroup

$H$

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


Function

$\map h x$

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 .