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| Issue Date | Title | Author(s) | Type | Access Type |
|---|---|---|---|---|
| 2020 | The star-center of the quaternionic numerical range | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2019 | On the convexity and circularity of the numerical range of nilpotent quaternionic matrices | Carvalho, L.; Mendes, S.; Diogo, C. | Article | Open Access |
| 2019 | A bridge between quaternionic and complex numerical ranges | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2023 | S-spectrum and numerical range of a quaternionic operator | Carvalho, L.; Diogo, C.; Mendes, S. | Article | Open Access |
| 2024 | A note on the essential numerical range of block diagonal operators | Carvalho, L.; Diogo, C.; Mendes, S.; Soares, H. | Article | Open Access |
| 2024 | On the convexity of the quaternionic essential numerical range | Carvalho, L.; Diogo, C.; Mendes, S.; Soares, H. | Article | Open Access |
| 2025 | Quaternionic essential numerical range of complex operators | Carvalho, L.; Diogo, C.; Mendes, S.; Soares, H. | Article | Embargoed Access |