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Move from arrays of structs to structs of arrays for operators

enhancementNew feature or requestNew feature or request

Status: Open.

#105 In qiskit-community/fulqrum;

· nonhermitian opened on Aug 21, 2026

·  

post-QDC

Consider tracking number of out-of-subspace (OOS) column lookups

enhancementNew feature or requestNew feature or request

Status: Open.

#98 In qiskit-community/fulqrum;

· nonhermitian opened on Aug 4, 2026

SubspaceHamiltonian sometimes drops terms from extended JW operators

Status: Open.

#91 In qiskit-community/fulqrum;

· willkirby1 opened on Jul 28, 2026

Support ruff 0.16

Status: Open.

#85 In qiskit-community/fulqrum;

· nonhermitian opened on Jul 24, 2026

Handle half-strs mode separately

Status: Open.

#76 In qiskit-community/fulqrum;

· ashsaki opened on Jul 7, 2026

Flatten offdiag_group_indices from a vector<vector> everywhere

Status: Open.

#73 In qiskit-community/fulqrum;

· ashsaki opened on Jul 7, 2026

Define _matvec in Fulqrum Hamiltonians that inherits from scipy LinearOperator

Status: Open.

#69 In qiskit-community/fulqrum;

· ashsaki opened on Jul 1, 2026

Add reduced-density-matrix (RDM) support

Status: Open.

#57 In qiskit-community/fulqrum;

· ashsaki opened on Jun 17, 2026

Add S^2 !=0 support to Fulqrum

Status: Open.

#56 In qiskit-community/fulqrum;

· ashsaki opened on Jun 17, 2026

add tutorial for open shell system

Status: Open.

#48 In qiskit-community/fulqrum;

· joannaqw opened on May 19, 2026

Move Subspace to C++

Status: Open.

#33 In qiskit-community/fulqrum;

· ashsaki opened on Apr 24, 2026

Standardize dtypes

enhancementNew feature or requestNew feature or request

Status: Open.

#27 In qiskit-community/fulqrum;

· ashsaki opened on Apr 14, 2026