Results 71 to 80 of about 13,431 (178)
Locally constant fibrations and positivity of curvature
Bulletin of the London Mathematical Society, Volume 57, Issue 4, Page 1005-1025, April 2025.Abstract Up to finite étale cover, any smooth complex projective variety X$X$ with nef anti‐canonical bundle is a holomorphic fibre bundle over a smooth projective variety with trivial canonical class (K‐trivial variety for short) with locally constant transition functions. We show that this result is optimal by proving that any projective fibre bundle
Niklas Müller
wiley +1 more source
Enhanced Young-type inequalities utilizing Kantorovich approach for semidefinite matrices
Open MathematicsThis article introduces new Young-type inequalities, leveraging the Kantorovich constant, by refining the original inequality. In addition, we present a range of norm-based inequalities applicable to positive semidefinite matrices, such as the Hilbert ...
Bani-Ahmad Feras +1 more
doaj +1 more source
Non-commutative f-divergence functional
, 2013 We introduce the non-commutative $f$-divergence functional $\Theta(\widetilde{A},\widetilde{B}):=\int_TB_t^{\frac{1}{2}}f\left(B_t^{-\frac{1}{2}} A_tB_t^{-\frac{1}{2}}\right)B_t^{\frac{1}{2}}d\mu(t)$ for an operator convex function $f$, where $\widetilde{
Kian, Mohsen, Moslehian, Mohammad Sal
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Unitarily invariant norm inequalities involving $G_1$ operators
, 2018 To appear in Commun.
openaire +3 more sources
Multireference Coupled‐Cluster Theory: The Internally Contracted Route
WIREs Computational Molecular Science, Volume 15, Issue 2, March/April 2025.Highly accurate quantum chemistry beyond the single‐reference regime remains a challenging scientific adventure. ABSTRACT Transferring the success of the coupled‐cluster expansion for single‐determinant references to multireference cases remains a challenge.
Robert G. Adam +2 more
wiley +1 more source
On perturbations of the isometric semigroup of shifts on the semiaxis [PDF]
, 2012 We study perturbations $(\tilde\tau_t)_{t\ge 0}$ of the semigroup of shifts $(\tau_t)_{t\ge 0}$ on $L^2(\R_+)$ with the property that $\tilde\tau_t - \tau_t$ belongs to a certain Schatten-von Neumann class $\gS_p$ with $p\ge 1$.
Amosov, G. G. +2 more
core
Angle‐Free Cluster‐Robust Ritz Value Bounds for Restarted Block Eigensolvers
Numerical Linear Algebra with Applications, Volume 32, Issue 1, February 2025.ABSTRACT Convergence rates of block iterations for solving Hermitian eigenvalue problems typically measure the errors of Ritz values approximating eigenvalues. These errors are usually bounded in terms of principal angles between the initial or iterative subspace and the invariant subspace associated with the target eigenvalues.
Ming Zhou, Andrew Knyazev, Klaus Neymeyr
wiley +1 more source
Bounds on Shannon distinguishability in terms of partitioned measures
, 2010 A family of quantum measures like the Shannon distinguishability is presented. These measures are defined over the two classes of POVM measurements and related to separate parts in the expression for mutual information.
Rastegin, Alexey E.
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Advanced Quantum Technologies, Volume 8, Issue 2, February 2025.The UAVQD vectorization method is demonstrated to effectively address various quantum system challenges. From simple quantum information models to the dynamics of the biological FMO complex, and Dicke superradiance, this method achieves efficient, scalable simulation with promising implications for advanced quantum computing.
Saurabh Shivpuje +4 more
wiley +1 more source
Linear independence of coherent systems associated to discrete subgroups
Bulletin of the London Mathematical Society, Volume 57, Issue 2, Page 315-329, February 2025.Abstract This note considers the finite linear independence of coherent systems associated to discrete subgroups. We show by simple arguments that such coherent systems of amenable groups are linearly independent whenever the associated twisted group ring does not contain any nontrivial zero divisors.
Ulrik Enstad, Jordy Timo van Velthoven
wiley +1 more source