# Symbols:F

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### femto-

$\mathrm f$

The Système Internationale d'Unités symbol for the metric scaling prefix femto, denoting $10^{\, -15 }$, is $\mathrm { f }$.

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

$\mathrm F$ or $\mathrm f$

The hexadecimal digit $15$.

Its $\LaTeX$ code is \mathrm F  or \mathrm f.

### Function

$\map f x$

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

The $\LaTeX$ code for $\map f x$ is \map f x .

### Primitive

$\map F x$

Given a real function $f$, the primitive of $f$ is often denoted $F$:

$\map F x = \ds \int \map f x \rd x$

The $\LaTeX$ code for $\map F x$ is \map F x .

### Predicate

$F a$

Frequently used to denote a general unspecified predicate in the context of predicate logic, for example:

$F a$ represents:
$a$ has property $F$

The $\LaTeX$ code for $F a$ is F a .

### False

$\F$

Symbol generally used for falsehood.

A statement has a truth value of false if and only if what it says does not match the way that things are.

The $\LaTeX$ code for $\F$ is \F .

$\mathrm F$

The symbol for the Faraday is $\mathrm F$.

Its $\LaTeX$ code is \mathrm F .

### Galois Field

$\map \GF p$

Used to denote a Galois field of $p$ elements.

The $\LaTeX$ code for $\map \GF p$ is \map \GF p .

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