模板:Norm
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This template may be used to enclose text between two pairs of vertical bars (U+007C | VERTICAL LINE), such as to denote the norm. It adds padding (of width 0.1 em) on each side inside the bars.
Usage
When {{math|{{norm|''x''}} < 7}}, the function is positive.
When ||x|| < 7, the function is positive.
The notation {{math|{{norm}}}} means ''norm''.
The notation || · || means norm.
Alternatives
This template is equivalent to enclosing the text between two pairs of {{pipe}}
templates (plus padding of width similar to hair spaces around the argument)
When {{math|{{pipe}}{{pipe}} <!-- hair space -->''x'' {{pipe}}{{pipe}} < 7}}, the function is positive.
When || x || < 7, the function is positive.
See also
编者可以在本模板的沙盒 (创建 | 镜像)和测试样例 (创建)页面进行实验。 本模板的子页面。 |