Extending Polynomially Normal Operators to (P,Q)-Normal Operators in Semi-Hilbertian Spaces
Mathematics | Vol. 14 | Issue 5 | 2026
DOI: https://doi.org/10.3390/math14050834
A Structural Study of Generalized [m,C]-Symmetric Extension Operators
SYMMETRY | Vol. 17 | Issue 11 | 2025
DOI: https://doi.org/10.3390/sym17111836