# Symbols:N

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### nano-

$\mathrm n$

The Système Internationale d'Unités symbol for the metric scaling prefix nano, denoting $10^{\, -9 }$, is $\mathrm { n }$.

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

### Multiary

$n$-

When indicating an unspecified but finite number of objects in a concept, the prefix $n$- is frequently used, as for example:

ordered $n$-tuple
$n$-dimensional
$n$-ary
$n$-gon

Its $\LaTeX$ code is n .

### Set of Natural Numbers

$\N$

The set of natural numbers:

$\N = \set {0, 1, 2, 3, \ldots}$

The $\LaTeX$ code for $\N$ is \N  or \mathbb N or \Bbb N.

### Set of Non-Zero Natural Numbers

$\N_{> 0}$ or $\N_{\ne 0}$

The set of non-zero natural numbers:

$\N_{> 0} = \set {1, 2, 3, \ldots}$

The $\LaTeX$ code for $\N_{> 0}$ is \N_{> 0}  or \mathbb N_{> 0} or \Bbb N_{> 0}.

The $\LaTeX$ code for $\N_{\ne 0}$ is \N_{\ne 0}  or \mathbb N_{\ne 0} or \Bbb N_{\ne 0}.

### Initial Segment of Natural Numbers

$\N_n$, $\N^*_n$

The set $\N_n$ is the set of all natural numbers which are less than $n$:

$\N_n = \set {x \in \N: x < n} = \set {0, 1, 2, \ldots, n - 1}$

The $\LaTeX$ code for $\N_n$ is \N_n  or \mathbb N_n or \Bbb N_n.

Similarly, the set $\N^*_n$ is the set of all non-zero natural numbers which are less or equal to $n$:

$\N^*_n = \set {x \in \N^*: x \le n} = \set {1, 2, \ldots, n}$

The $\LaTeX$ code for $\N^*_n$ is \N^*_n  or \mathbb N^*_n or \Bbb N^*_n.

### Newton

$\mathrm N$

The symbol for the newton is $\mathrm N$.

Its $\LaTeX$ code is \mathrm N .

### North

$\mathrm N$

### North (Terrestrial)

North is the direction on (or near) Earth's surface along the meridian directly towards the North Pole.

### North (Celestial)

The $\LaTeX$ code for $\mathrm N$ is \mathrm N .

### Northeast

$\mathrm {NE}$

Northeast is the direction on (or near) Earth's surface halfway between north and east.

The $\LaTeX$ code for $\mathrm {NE}$ is \mathrm {NE} .

### Northwest

$\mathrm {NW}$

Northwest is the direction on (or near) Earth's surface halfway between north and west.

The $\LaTeX$ code for $\mathrm {NW}$ is \mathrm {NW} .

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