ShiftNpcLinearOperator

• full name: tenpy.linalg.sparse.ShiftNpcLinearOperator

• parent module: tenpy.linalg.sparse

• type: class

Inheritance Diagram

Methods

ShiftNpcLinearOperator.__init__(…)	Initialize self.
ShiftNpcLinearOperator.adjoint()	Return the hermitian conjugate of self.
ShiftNpcLinearOperator.matvec(vec)
ShiftNpcLinearOperator.to_matrix()	Contract self to a matrix.
ShiftNpcLinearOperator.unwrapped()	Return to the original NpcLinearOperator.

class tenpy.linalg.sparse.ShiftNpcLinearOperator(orig_operator, shift)

Bases: tenpy.linalg.sparse.NpcLinearOperatorWrapper

Representes original_operator + shift * identity.

This can be useful e.g. for better Lanczos convergence.

to_matrix()

Contract self to a matrix.

adjoint()

Return the hermitian conjugate of self.

If self is hermitian, subclasses can choose to implement this to define the adjoint operator of self.

unwrapped()

Return to the original NpcLinearOperator.

If multiple levels of wrapping were used, this returns the most unwrapped one.