# Qyy

The yy component of $Q$ is defined as: $$Q_{yy} = 3y^2/r^2 - 1.$$ The equivalent operator in Quanty is created by:

Example.Quanty
OppQyy = NewOperator("Qyy", NF, IndexUp, IndexDn)

The operator could also be defined by:

Example.Quanty
Akm={{2,-2,-sqrt(1.5)},{2, 2,-sqrt(1.5)},{2,0,-1}}
OppQyy=NewOperator("CF",NF,indexup,indexdn,Akm)