v1.0.0

This is the release of the version v1.0.0, which is the stable version of the project.

Release notes:

1. [Important] This is the first stable release of the project.
2. [Change] Merge Contract and Contracts into Contract, and Contract_ and Contracts_ ito Contract_.
3. [Change] Merge relabel and relabels into relabel, and relabel_ and relabels_ into relabel_.
4. [New] Add an optional argument min_blockdim to svd_truncate to define a minimum dimension for each block.
5. [New] Add Eig/Eigh functions for Block UniTensor.
6. [New] Add Lancos-like algoirthm, Lanczos_Exp, to approximate exponential operator acting on a state.
7. [Change] Migrate cuTENSOR APIs to the version 2.
8. [Change] reshape_ and permute_ to return the object itself instead of None.
9. [Change] Remove the magma dependency.
10. [Enhance] Optimize the contraction order finding algorithm.

v0.9.7

bump version to 0.9.7

v0.9.6

Merge pull request #346 from Cytnx-dev/dev-master

fix conda build does not properly build current commit

v0.9.5

Same content as 094, fix CD to conda-forge

v0.9.4

This has the same content as v0.9.3

v0.9.3

This release includes

1. improvements of GPUs, integrated with cutensor/cuquantum.
2. extra Svd methods for both CPU and GPU.
3. Other improvements of user API including conversion between symmetric and non-sym UniTensors.

v0.9.2

This update includes following major changes:

1.[Important] [Change] Remove all deprecated APIs and old SparseUniTensor data structure
2. [Fix] Bugs when batch_matmul when no MKL
3. [Update] Update examples to match new APIs
4. [New] add labels options when creating UniTensor from Tensor.
5. [New] change MKL to mkl_rt instead of fixed interface ilp64/lp64

v0.9.1

This update includes

1. [New] Add additional argument share_mem for Tensor.numpy() python API.
2. [Fix] UniTensor.at() python API not properly wrapped.
3. [Fix] Bug in testing for BlockUniTensor.
4. [Fix] Bug in UniTensor print info (duplicate name, is_diag=true BlockUniTensor dimension display)
5. [Change] Svd now using gesdd instead of gesvd.
6. [New] Add linalg.Gesvd function, along with Gesvd_truncate.
7. [Fix] Strict casting rule cause compiling fail when compile with icpc
8. [New] Add additional argument for Network.PutUniTensor to match the label.
9. [Fix] Network TOUT string lbl bug
10. [Fix] #156 storage python wrapper cause not return.
11. [Add] linalg.Gemm/Gemm_()
12. [Add] UniTensor.normalize()/normalize_()

v0.7.6

This update includes several optimization.

1. [Enhance] Adding alias BD_IN=BD_KET, BD_BRA=BD_OUT, BD_NONE=BD_REG.
2. [New] Add Contracts for multiple UniTensors contraction.
3. [Fix] cytnx.cpp_lib for some version of cmake and conda install, libpath is lib64 instead of lib.
4. [Optimize] SparseUniTensor contiguous (moving elements)
5. [Optimize] cytnx_error_* will now evaluate the clause first, and then instance the following strings.
6. [Enhance] Add Global bool variable User_debug, which when set to false some checking will be skipped, which increasing the execution speed
7. [Enhance] Add Network.getOptimalOrder()

v0.7.4

v0.7.4

1. [Enhance] Lanczos_ER Lanczos_Gnd not convergence with maxiter will now gives warning instead of error.
2. [Enhance] Arithmetic of UniTensor(&)constant now preserve the label of input UniTensor.
3. [New][experiment] Add MPS class with two variant: iMPS, RegularMPS.
4. [New][experiment] Add MPO class.
5. [Enhance] Add UniTensor.relabel
6. [Enhance] Add Network.FromString
7. [New][experiment] DMRG API
8. [New][experiment] Add MPS Save/Load, and can now have different phys_dim for each site.
9. [Fix] SparseUniTensor.permute does not properly update contiguous status when rowrank argument is given.
10. [Enhance] get_block()/put_block() by qnums now have a new argument "force" to get blocks from non-braket_form UniTensor.
11. [New] Add SparseUniTensor contract
12. [New] Add SparseUniTensor linalg::Svd support.
13. [Enhance] SparseUniTensor print info, add "contiguous" status.
14. [Enhance] Add print_info for Symmetry descriptor
15. [Enhance] Add UniTensor.syms()
16. [Fix] Tensor.set when one of accessor is Singl will cause error.
17. [Enhance] SparseUniTensor diag x diag, diag x dense are finished.
18. [Fix] SparseUniTensor when diag permutation issue.
19. [Fix] Sort does not return out Tensor.
20. [Fix] Tproxy.item() does not get correct element.
21. [Fix] Bug for Svd on SparseUniTensor vT is being set by U
22. [New][experiment] Svd_truncate for SparseUniTensor
23. [New] add Bond.redirect(), Bond.retype()
24. [Fix] SparseUniTensor.permute() does not properly update braket_form
25. [Fix] SparseUniTensor.set_rowrank should track _inner_rowrank not _rowrank bug.
26. [Enhance] Add UniTensor.change_label() <- [Removed!!] use relabel(s)()
27. [Fix] Svd_truncate when one of the block has only dim=1 should fill-in the dangling dimension.
28. [New][experiment] iTEBD with U1 symmetry example for Heisenberg chain
29. [Change] v0.7.4 [26.] replace change_label() with relabel. Now only have set_label(s) and relabel(s) with *_label() have by_label option.
30. [Enhance] Add Accessor option Qns, qns()
31. [Change] Trace now by default trace axis =0 and axis=1 if no argument specify.
32. [Fix] Compare of two Bonds will now also check qnums.
33. [New][experiment] SparseUniTensor.Trace() now support rank-2 symmetric UniTensor -> scalar
34. [New][experiment] Contract of SparseUniTensor with two SUT with same labels -> scalar is now avaliable
35. [Fix] DMRG initialize does not properly normalize the init state.
36. [New] Scalar.conj(), Scalar.real(), Scalar.imag(), Scalar.maxval(dtype), Scalar.minval(dtype)
37. [Enhance] Lanczos internal now written with single general function.
38. [Enhance] Storage.append() now accept Scalar
39. [Enhance][Fix] Fix inplace Arithmetic between Tensor +=(-=,*=,/=) Tensor with both non-contiguous leads to inconsistent memory alignment.
40. [Enhance] from 39. add iAdd(), iDiv(), iMul(), iSub(), this can be called by user but is not recommended.
41. [Enhance] Modify DMRG kernel for generic UniTensor as state.
42. [New][experiment] Add Lanczos_Gnd_Ut() which accept Tin as UniTensor
43. [New][experiment] LinOp now add an matvec option for UniTensor => UniTensor, which can be used together with Lanczos_Gnd_Ut
44. [Change] Remove LinOp with custom function support, inheritance is forced.
45. [Enhance] add Tensor.at() without template.
46. [Change][Enhance] Remove UniTensor.get_elem/set_elem, unify them with at().
47. [Fix] Trace for SparseUniTensor with is_diag=True.
48. [New][experiment] MPS.Norm()
49. [Fix] Lanczos_Gnd_Ut when input dimension is only 2 now check if the beta=0.
50. [New] Add DMRG U1 example.
51. [Change] Behavior change for Svd_truncate. SparseUniTensor the keepdim can exceed the current dimension of UniTensor, in such case it is equivalent to Svd.
52. [New] Add UniTensor.Norm()
53. [New][experiment] add MPS.Init_Msector(), which initialize the state with specify total magnetization.
54. [Enhance] Add additional feature Svd_truncate with truncation_err (err) and return_err option for Ten
55. [Enhance] Add additional feature Svd_truncate with truncation_err (err) and return_err option for DUTen
56. [Enhance] Add python dmrg example for using tn_algo