Vertical bar
A vertical bar is the glyph "|". It has several other names besides vertical bar, such as "pipe", "vertical slash", and "bar". In mathematics, it may be put on both sides of a real or complex number to mean its absolute value. When applied on both sides of a matrix, it means its determinant. When placed in between two numbers, it means the divisibility relation (for example. [math]\displaystyle{ a \mid b }[/math] means "a divides b").[1][2]
In mathematics, double vertical bars are also used to refer to various mathematical concepts. These include the parallel relation (as in [math]\displaystyle{ \ell_1 \parallel \ell_2 }[/math]) and the norm of a vector (as in [math]\displaystyle{ \| \mathbf{v}\| }[/math]).[1][3]
Vertical Bar Media
The code point 124 (7C hexadecimal) is occupied by a broken bar in a dot matrix printer of the late 1980s, which apparently lacks a solid vertical bar. See the full picture.
Full character set of IBM's Code page 437 rendered in VGA, which displays the broken bar glyph for codepoint 7C, despite the 1977 revision to ASCII
Related pages
References
- ↑ 1.0 1.1 "Comprehensive List of Algebra Symbols". Math Vault. 2020-03-25. Retrieved 2020-08-24.
- ↑ Weisstein, Eric W. "Single Bar". mathworld.wolfram.com. Retrieved 2020-08-24.
- ↑ Weisstein, Eric W. "Double Bar". mathworld.wolfram.com. Retrieved 2020-08-24.
