Formula:7608

Digital Library of Mathematical Functions ID 21.7.E16

${\displaystyle{\displaystyle 4(\boldsymbol{{\eta}}^{1}(T_{1})\cdot\boldsymbol{{\eta}}^{2}(T_{2})-\boldsymbol{{\eta}}^{2}(T_{1})\cdot\boldsymbol{{\eta}}^{1}(T_{2}))=|T_{1}\cap T_{2}|\pmod{2}.}}$

Symbols List

• ${\displaystyle{\displaystyle\cap}}$:
• ${\displaystyle{\displaystyle T}}$: subset of B
 

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