3 papers
math.OC2026
Sharp Spectral Bounds for Symmetric Positive Definite Tensors via Multiple Algebraic Invariants
Hemant Sharma, Snigdhashree Nayak, Ankit Singh
We extend the trace--determinant framework of Nayak, Sharma, and Mishra~\cite{nayak2026} for bounding the H-eigenvalues of symmetric positive definite tensors. First, we replace th…
math.NA2026
Randomized Estimation of T-Eigenvalues of T-SPD Tensors: A Two-Sided Bracket
Hemant Sharma, Nachiketa Mishra
In earlier work \cite{sharma2025} we developed deterministic analytical bounds on the T-eigenvalues of symmetric positive definite (SPD) third-order tensors under the Kilmer--Marti…
quant-ph2025
Minimising the number of edges in LC-equivalent graph states
Hemant Sharma, Kenneth Goodenough, Johannes Borregaard +2
Graph states are a powerful class of entangled states with numerous applications in quantum communication and quantum computation. Local Clifford (LC) operations that map one graph…