Formula:8662

Digital Library of Mathematical Functions ID 26.15.E2

${\displaystyle{\displaystyle\mathop{\mathrm{inv}}(\sigma)=\sum a_{gh}a_{k\ell},}}$

Symbols List

• ${\displaystyle{\displaystyle h}}$: nonnegative integer
• ${\displaystyle{\displaystyle k}}$: nonnegative integer
• ${\displaystyle{\displaystyle\ell}}$: nonnegative integer
• ${\displaystyle{\displaystyle\sigma}}$: permutation
 

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