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# Acknowledgement and Funding

We thank all the PETSc team members for their suggestions, bug reports, and encouragement.

## Contributors

The following people have contributed code to SLEPc:

- F. Alvarruiz: restarted Lanczos for the GSVD, structured BSE and Hamiltonian solvers.

- A. Lamas Daviña: CUDA code, new website and documentation.

- B. Mellado-Pinto: structured BSE solvers.

- P. Jolivet: many fixes and suggestions.

- Y. Maeda, T. Sakurai: CISS solvers.

- M. Moldaschl, W. Gansterer: BDC subroutines.

- F. Kong: nonlinear inverse iteration.

- H. Fang, Y. Saad: FILTLAN polynomial filter.

## Grants

Currently, the development of SLEPc is being supported by the following grants:

- Agencia Estatal de Investigacion; Reference: PID2022-139568NB-I00; PI: Jose E. Roman; Period: 1/9/2023-31/8/2026.

Previous grants:

- Innovation Study ISOLV-BSE has received funding through the Inno4scale project, which is funded by the European High-Performance Computing Joint Undertaking (JU) under Grant Agreement No 101118139. The JU receives support from the European Union’s Horizon Europe Programme. Coordinator: Jose E. Roman; Period: 1/2/2024-31/1/2025.

- Agencia Estatal de Investigación (Spain); Reference: PID2019-107379RB-I00; PI: Jose E. Roman; Period: 2020-2022.

- Agencia Estatal de Investigación (Spain); Reference: TIN2016-75985-P; PI: Jose E. Roman; Period: 2017-2019.

- Ministerio de Economia y Competitividad (Spain); Reference: TIN2013-41049-P; PI: Jose E. Roman; Period: 2014-2016.

- Ministerio de Ciencia e Innovacion (Spain); Reference: TIN2009-07519; PI: Jose E. Roman; Period: 2010-2012.

- Directorate of Research and Technology Transfer, Valencian Regional Administration, GV06/091, PI: Jose E. Roman.

- Office of Science and Technology, Valencian Regional Administration, CTIDB/2002/54, PI: Vicente Hernandez.