data/mathoid/292.mml
<math
xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="left-parenthesis StartFraction a Over p EndFraction right-parenthesis equals StartLayout Enlarged left-brace 1st Row 1st Column 1 2nd Column if a is a quadratic residue modulo p and a not-identical-to 0 left-parenthesis mod p right-parenthesis comma 2nd Row 1st Column negative 1 2nd Column if a is a quadratic non hyphen residue modulo p comma 3rd Row 1st Column 0 2nd Column if a identical-to 0 left-parenthesis mod p right-parenthesis period EndLayout">
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<mtext data-semantic-type="text" data-semantic-role="unknown" data-semantic-font="normal" data-semantic-id="12" data-semantic-parent="33"> is a quadratic residue modulo </mtext>
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<annotation encoding="application/x-tex">\left({\frac {a}{p}}\right)={\begin{cases}1&{\text{ if }}a{\text{ is a quadratic residue modulo }}p{\text{ and }}a\not \equiv 0{\pmod {p}},\\-1&{\text{ if }}a{\text{ is a quadratic non-residue modulo }}p,\\0&{\text{ if }}a\equiv 0{\pmod {p}}.\end{cases}}</annotation>
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