Symbols:A

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atto-

$\mathrm a$

The Système Internationale d'Unités symbol for the metric scaling prefix atto, denoting $10^{\, -18 }$, is $\mathrm { a }$.


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


are

$\mathrm a$

The are is a measure of area:

One are is equal to a square whose side measures $10$ metres.

\(\ds \) \(\) \(\ds 1\) are
\(\ds \) \(=\) \(\ds 100\) square metres
\(\ds \) \(\approx\) \(\ds 119 \cdot 60\) square yards


Hexadecimal

$\mathrm A$ or $\mathrm a$

The hexadecimal digit $10$.


Its $\LaTeX$ code is \mathrm A  or \mathrm a.


Celestial Altitude

$a$


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 often denoted by $a$.


Azimuth (Astronomy)

$A$


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

The spherical angle between the principal vertical circle and the vertical circle on which $X$ lies is the azimuth of $X$.

The azimuth is usually measured in degrees, $0 \degrees$ to $180 \degrees$ either west or east, depending on whether $X$ lies on the eastern or western hemisphere of the celestial sphere.


It is often denoted by $A$.


Ampere

$\mathrm A$

The symbol for the ampere is $\mathrm A$.


Its $\LaTeX$ code is \mathrm A .


Angstrom

$\mathring {\mathrm A}$

The symbol for the angstrom is $\mathring {\mathrm A}$.


Its $\LaTeX$ code is \mathring {\mathrm A} .


Alternating Group

$A_n$

The alternating group on $n$ letters.


Its $\LaTeX$ code is A_n .


acos

$\operatorname {acos}$

The arccosine function.


Its $\LaTeX$ code is \operatorname {acos} .


acosec

$\operatorname {acosec}$

The arccosecant function.


Its $\LaTeX$ code is \operatorname {acosec} .


acosech

$\operatorname {acosech}$

The real area hyperbolic cosecant function.


Its $\LaTeX$ code is \operatorname {acosech} .


acosh

$\operatorname {acosh}$

The real area hyperbolic cosine function.


Its $\LaTeX$ code is \operatorname {acosh} .


acot

$\operatorname {acot}$

The arccotangent function.


Its $\LaTeX$ code is \operatorname {acot} .


acoth

$\operatorname {acoth}$

The real area hyperbolic cotangent function.


Its $\LaTeX$ code is \operatorname {acoth} .


acsc

$\operatorname {acsc}$

The arccosecant function.


Its $\LaTeX$ code is \operatorname {acsc} .


acsch

$\operatorname {acsch}$

The real area hyperbolic cosecant function.


Its $\LaTeX$ code is \operatorname {acsch} .


actn

$\operatorname {actn}$

The arccotangent function.


Its $\LaTeX$ code is \operatorname {actn} .


actnh

$\operatorname {actnh}$

The real area hyperbolic cotangent function.


Its $\LaTeX$ code is \operatorname {actnh} .


adj

$\adj {\mathbf A}$

The adjugate or adjoint matrix.


The $\LaTeX$ code for \(\adj {\mathbf A}\) is \adj {\mathbf A} .


aln

$\operatorname {aln}$

The antilogarithm of the natural logarithm.


Its $\LaTeX$ code is \operatorname {aln} .


alog

$\operatorname {alog}_b$

The antilogarithm of a general logarithm to base $b$.


If no base is given, the common logarithm (that is, base $10$) is assumed.

The $\LaTeX$ code for \(\operatorname {alog}_b\) is \operatorname {alog}_b .


amp

$\operatorname {amp} $

The amplitude of the incomplete elliptic integral of the first kind.


Its $\LaTeX$ code is \operatorname {amp} .


Ann

$\operatorname {Ann}$

The annihilator of a ring.


Its $\LaTeX$ code is \operatorname {Ann} .


arg

$\arg$

The argument of a complex number.


Its $\LaTeX$ code is \arg .


Arg

$\operatorname {Arg}$

The principal argument of a complex number.


Its $\LaTeX$ code is \Arg .


asec

$\operatorname {asec}$

The arcsecant function.


Its $\LaTeX$ code is \operatorname {asec} .


asech

$\operatorname {asech}$

The real area hyperbolic secant function.


Its $\LaTeX$ code is \operatorname {asech} .


asin

$\operatorname {asin}$

The arcsine function.


Its $\LaTeX$ code is \operatorname {asin} .


asinh

$\operatorname {asinh}$

The real area hyperbolic sine function.


Its $\LaTeX$ code is \operatorname {asinh} .


atan

$\operatorname {atan}$

The arctangent function.


Its $\LaTeX$ code is \operatorname {atan} .


atn

$\operatorname {atn}$

The arctangent function.


Its $\LaTeX$ code is \operatorname {atn} .


atanh

$\operatorname {atanh}$

The real area hyperbolic tangent function.


Its $\LaTeX$ code is \operatorname {atanh} .


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