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| <includeonly>|{{#if: {{{1|}}} | <!-- hair space -->{{{1}}}| · }}|</includeonly><noinclude><!-- | is a pipe (vertical bar). --><!-- The hair space to the left prevents the italicized variable (as per math convention) from touching the vertical bar. --> | | <includeonly>|{{#if:{{{1|}}}|<span class="nowrap" style="padding-left:0.1em; padding-right:0.1em;">{{{1}}}</span>| · }}|</includeonly><noinclude> |
| {{documentation|content = | | {{documentation}} |
| This template may be used to enclose text between two pipes, typically denoting the [[absolute value]].
| | </noinclude> |
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| == Usage ==
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| <pre>
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| When {{math|{{abs|''x''}} < 7}}, the function is positive.
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| </pre>
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| When {{math|{{abs|''x''}} < 7}}, the function is positive.
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| <pre>
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| The notation {{math|{{abs}}}} means '''absolute value'''.
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| </pre>
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| The notation {{math|{{abs}}}} means '''absolute value'''.
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| == Alternatives ==
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| This template is equivalent to enclosing the text between two {{tld|pipe}} templates (and a hair space &#x200A; to the left of the argument; a hair space being a 1.5 mu space, i.e. a 1/12 em space)
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| <pre>
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| When {{math|{{pipe}}&#x200A;<!-- hair space -->''x''{{pipe}} < 7}}, the function is positive.
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| </pre>
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| When {{math|{{pipe}} <!-- hair space -->''x''{{pipe}} < 7}}, the function is positive.
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| == See also ==
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| * {{tl|pipe}}
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| * {{tl|norm}}
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| * {{tl|bra-ket}}
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| * {{tl|langle}} and {{tl|rangle}}
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| [[Category:Mathematical formatting templates]]
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| }}</noinclude>
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