bug fixes

minor bug fixes and maintenance

MPS improvements, bug fixes

Bug fixes in BaseMPS class.

Bug fixes and minor improvements

0.4.4

update description

NconBuilder

Added the NconBuilder class.

General improvements.

• Added tn.from_topology method
• Improved JAX backend, especially around decomposition algorithms
• Added many features to tn.Tensor
• Added new encoding for block sparse backend

Bug fixes and optimizations

A minor release that doesn't change user facing behavior. Many methods were optimized and several minor bugs were fixed.

DMRG Support

DRMG is now supported on the NumPy, JAX, and PyTorch backends.

• Added tn.FiniteDMRG class
• Added tn.FiniteMPO along with several prebuilt MPO classes like FiniteTFI and FiniteXXZ.
• JAX backend now jits several of its methods.
• Added experimental tn_keras layers. These layers are HIGHLY EXPERIMENTAL, so please don't run them in production yet. :)
• Added a new tn.get_neighbors method.
• Added new ZN symmetry group for the symmetric backend.

0.3.1

Minor release for backend bug fix.

Support for symmetries

Added a new symmetric backend. Current symmetries include U1 and Z2, but more will be added in the very near future.

• Added various classes for the symmetric backend including:
  BlockSparseTensor, ChargeArray, Index, U1Charge, Z2Charge, and BaseCharge.
• Added tn.replicate_nodes as a cleaner API to tn.copy()

Inifinte MPS

• Added InifiniteMPS class.
• Added +, -, *, and / support for Nodes
• Added with tn.DefaultBackend(....): support to allow more modular control of the default backends.
• Added various quantum abstractions like QuOperator, QuVector and QuAdjointVector.
• Added support for contracting disconnected graphs in all the contractors.
• Added support for creating/passing a custom backend.