The Pincherle derivative of an operator is
where
is the operator of multiplication
by
.
If
is a shift-invariant operator, then its
Pincherle derivative is also a shift-invariant
operator.
The Pincherle derivative of an operator is
where
is the operator of multiplication
by
.
If
is a shift-invariant operator, then its
Pincherle derivative is also a shift-invariant
operator.
Weisstein, Eric W. "Pincherle Derivative." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/PincherleDerivative.html