Symbols:L
Roman Numeral
- $\mathrm L$ or $\mathrm l$
The Roman numeral for $50$.
Its $\LaTeX$ code is \mathrm L or \mathrm l.
Litre
- $\mathrm l$
The symbol for the litre is $\mathrm l$.
Its $\LaTeX$ code is \mathrm l .
Linear Measure
- $l$
The usual symbol used to denote linear measure is $l$.
Its $\LaTeX$ code is l .
Galactic Longitude
- $l$
The symbol used to denote galactic longitude is $l$.
Its $\LaTeX$ code is l .
Lowest Common Multiple
- $\lcm \set {a, b}$
For all $a, b \in \Z: a b \ne 0$, there exists a smallest $m \in \Z: m > 0$ such that $a \divides m$ and $b \divides m$.
This $m$ is called the lowest common multiple of $a$ and $b$, and denoted $\lcm \set {a, b}$.
The $\LaTeX$ code for \(\lcm \set {a, b}\) is \lcm \set {a, b} .
Inductance
- $L$
The usual symbol used to denote inductance is $L$.
Its $\LaTeX$ code is L .
Angular Momentum
- $\mathbf L$
Let $P$ be a particle of mass $m$ moving with velocity $\mathbf v$ relative to a point $O$.
The angular momentum of $P$ relative to (or about) $O$ is defined as:
- $\mathbf L = \mathbf r \times \mathbf p = m \paren {\mathbf r \times \mathbf v}$
where:
- $\mathbf p$ denotes the (linear) momentum of $P$
- $\mathbf r$ denotes the position vector of $P$ with respect to $O$
- $\times$ denotes the vector cross product.
The usual symbol used to denote the angular momentum of a body is $\mathbf L$.
The $\LaTeX$ code for \(\mathbf L\) is \mathbf L .
Avogadro's Number
- $L$
A symbol often used for Avogadro's number is $L$.
Its $\LaTeX$ code is L .
Pound
- $\mathrm {lb}$
The symbol for the pound is $\mathrm {lb}$.
Its $\LaTeX$ code is \mathrm {lb} .
Pound Force
- $\mathrm {lbf}$
The symbol for the pound force is $\mathrm {lbf}$.
The $\LaTeX$ code for \(\mathrm {lbf}\) is \mathrm {lbf} .
Pound-Foot
- $\mathrm {lbf \cdot ft}$
The symbol for the pound-foot is $\mathrm {lbf \cdot ft}$.
Its $\LaTeX$ code is \mathrm {lbf \cdot ft} .
Pound-Foot: Variant 1
- $\mathrm {lb \cdot ft}$
The symbol for the pound-foot can also be presented as $\mathrm {lb \cdot ft}$.
The $\LaTeX$ code for \(\mathrm {lb \cdot ft}\) is \mathrm {lb \cdot ft} .
Pound-Foot: Variant 2
- $\mathrm {lbf \, ft}$
The symbol for the pound-foot can also be presented as $\mathrm {lbf \, ft}$.
Its $\LaTeX$ code is \mathrm {lbf \, ft} .
Pound per Square Inch
- $\mathrm {lbf / in^2}$
The symbol for the pound per square inch is $\mathrm {lbf / in^2}$.
The $\LaTeX$ code for \(\mathrm {lbf / in^2}\) is \mathrm {lbf / in^2} .
Pound per Square Foot
- $\mathrm {lbf / ft^2}$
The symbol for the pound per square foot is $\mathrm {lbf / ft^2}$.
The $\LaTeX$ code for \(\mathrm {lbf / ft^2}\) is \mathrm {lbf / ft^2} .
Pound per Foot per Hour
- $\mathrm {lb / ft \, h}$
The symbol for the pound per foot per hour is $\mathrm {lb / ft \, h}$.
Its $\LaTeX$ code is \mathrm {lb / ft \, h} .
Pound Force Second per Square Foot
- $\mathrm {lbf \, s / ft^2}$
The symbol for the pound force second per square foot is $\mathrm {lbf \, s / ft^2}$.
Its $\LaTeX$ code is \mathrm {lbf \, s / ft^2 .}
Pound Force Second per Square Inch
- $\mathrm {lbf \, s / in^2}$
The symbol for the pound force second per square inch is $\mathrm {lbf \, s / in^2}$.
Its $\LaTeX$ code is \mathrm {lbf \, s / in^2 .}
Pound-Mole
- $\mathrm {lb \, mol}$
The symbol for the pound-mole is $\mathrm {lb \, mol}$.
Its $\LaTeX$ code is \mathrm {lb \, mol} .
Light Year
There are a number of symbols which are in use for the light year:
- $\mathrm {ly}$ (as approved by the International Astronomical Union)
- $\mathrm {l.y.}$ (the ISO 80000 standard)
Language-specific versions can be seen in particular localities, for example:
- $\mathrm {al}$ in French (from année-lumière), Spanish (from año luz) and Italian (from anno luce)
- $\mathrm {Lj}$ in German (from Lichtjahr)
The $\LaTeX$ code for \(\mathrm {ly}\) is \mathrm {ly} .
The $\LaTeX$ code for \(\mathrm {l.y.}\) is \mathrm {l.y.} .
The $\LaTeX$ code for \(\mathrm {Lj}\) is \mathrm {Lj} .
The $\LaTeX$ code for \(\mathrm {al}\) is \mathrm {al} .