- Research Article
- 10.1016/j.laa.2026.02.007
Minimizing numerical radius of weighted cyclic matrices under permutation of the weights
- May 01, 2026
- Linear Algebra and its Applications
- Simon Marionnet
Publications from 2021 to 2026
Showing 10 of 339 papers
Minimizing numerical radius of weighted cyclic matrices under permutation of the weights
Semilinear stochastic heat equation with piecewise constant coefficients: Power variations and parameter estimation
Correction: Reversible and reusable compartmentalized thermoplastic chip for coculture of dorsal root ganglion neurons.
Correction for 'Reversible and reusable compartmentalized thermoplastic chip for coculture of dorsal root ganglion neurons' by Solène Moreau et al., Lab Chip, 2025, 25, 6741-6755, https://doi.org/10.1039/d5lc00666j.
Read moreScaling of multicopy constructive interference of Gaussian states
Abstract Quantum technology advances crucially depend on the scaling up of essential quantum resources. Their ideal multiplexing offers more significant gains in applications; however, the scaling of the nonidentical, fragile and varying resources is neither theoretically nor experimentally known. For bosonic systems, multimode interference is an essential tool already widely exploited to develop quantum technology. Here, we analyze, predict and compare essential scaling laws for a constructive interference of multiplexed nonclassical Gaussian states carrying information by displacement with weakly fluctuating squeezing in different multimode interference architectures. The signal-to-noise ratio quantifies the increase in displacement relative to the noise. We introduce the gain-toinstability ratio to numerically estimate the effect of unexplored resource instabilities in a large scale interference scheme. The use of the gain-to-instability ratio to quantify the scaling laws opens steps for extensive theoretical investigation of other bosonic resources and follow-up feasible experimental verification necessary for further development of these platforms.
Read moreJoint distribution of Hecke eigenforms on H3$ \mathbb {H}^3$
Abstract We prove a joint value equidistribution statement for Hecke–Maaß cusp forms on the hyperbolic three‐space . This supports the conjectural statistical independence of orthogonal cusp forms.
Read moreExponential mixing of all orders and CLT for automorphisms of compact Kähler manifolds
<!--StartFragment --> <span class="cf0">Special vector fields on Riemannian manifolds of constant negative sectional curvature and conservation laws</span><!--EndFragment -->
Polar factor's representations and approximations
Small Volume Bodies of Constant Width with Tetrahedral Symmetries
For every $n\ge 2$, we construct a body $U_n$ of constant width $2$ in $\mathbb{E}^n$ with small volume and symmetries of a regular $n$-simplex. $U_2$ is the Reuleaux triangle. To the best of our knowledge, $U_3$ was not previously constructed, and its volume is smaller than the volume of other three-dimensional bodies of constant width with tetrahedral symmetries. While the volume of $U_3$ is slightly larger than the volume of Meissner's bodies of width $2$, it exceeds the latter by less than $0.137\%$. For all large $n$, the volume of $U_n$ is smaller than the volume of the ball of radius $0.891$.
Read moreMultilevel Monte Carlo simulation of Bayesian Lasso
Abstract We show that Lasso and Bayesian Lasso are very close when the sparsity is large and the noise is small. We propose to solve Bayesian Lasso using multivalued stochastic differential equation. We derive four discretization algorithms, and present highly efficient multilevel Monte Carlo (MLMC) simulations. Additionally, we perform a numerical comparison of the Monte Carlo (MC), MLMC and proximal Markov chain Monte Carlo algorithm (PMALA).
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