SimpleTensorNetworks

This library implements a minimal subset of tensor network functionality required for TensorCrossInterpolation.jl. The development draws significant inspiration from ITensorNetworks.jl.

Feature list:

• Similar functionality to ITensors.Index and ITensors.ITensor without type instability
• Contraction operations for two tensor objects
• Tree tensor network structure based on DataGraphs.jl

Remarks:

• Maintain type stability wherever possible to support future static compilation with juliac.
• Feedback to ITensorNetworks.jl is encouraged. For instance, DataGraphs.jl lacks sufficient documentation, and contributing to its documentation could be beneficial.