Results 41 to 50 of about 1,236 (297)

The Signless Laplacian Estrada Index of Unicyclic Graphs [PDF]

Mathematics Interdisciplinary Research, 2017
‎For a simple graph G‎, ‎the signless Laplacian Estrada index is defined as SLEE(G)=∑ni=1eqi‎, ‎where q1‎, ‎q2‎,...‎, ‎qn are the eigenvalues of the signless Laplacian matrix of G‎.
Hamid Reza Ellahi, Ramin Nasiri, Gholam Hossein Fath-Tabar, Ahmad Gholami   +3 more
doaj   +1 more source

Resolving Matrix Spencer Conjecture Up to Poly-logarithmic Rank

Proceedings of the 55th Annual ACM Symposium on Theory of Computing, 2023
We give a simple proof of the matrix Spencer conjecture up to poly-logarithmic rank: given symmetric $d \times d$ matrices $A_1,\ldots,A_n$ each with $\|A_i\|_{\mathsf{op}} \leq 1$ and rank at most $n/\log^3 n$, one can efficiently find $\pm 1$ signs $x_1,\ldots,x_n$ such that their signed sum has spectral norm $\|\sum_{i=1}^n x_i A_i\|_{\mathsf{op}} =
Nikhil Bansal, Haotian Jiang, Raghu Meka
openaire   +2 more sources

Affine Kac-Moody Algebras and Tau-Functions for the Drinfeld-Sokolov Hierarchies: the Matrix-Resolvent Method [PDF]

, 2022
For each affine Kac-Moody algebra $X_n^{(r)}$ of rank $\ell$, $r=1,2$, or $3$, and for every choice of a vertex $c_m$, $m=0,\dots,\ell$, of the corresponding Dynkin diagram, by using the matrix-resolvent method we define a gauge-invariant tau-structure ...
Yang, Di, Daniele Valeri, Dubrovin, Boris, Di Yang, Valeri, Daniele, Boris Dubrovin   +5 more
core   +1 more source

Stochastic estimation of level density in nuclear shell-model calculations

EPJ Web of Conferences, 2016
An estimation method of the nuclear level density stochastically based on nuclear shell-model calculations is introduced. In order to count the number of the eigen-values of the shell-model Hamiltonian matrix, we perform the contour integral of the ...
Shimizu Noritaka, Utsuno Yutaka, Futamura Yasunori, Sakurai Tetsuya, Mizusaki Takahiro, Otsuka Takaharu   +5 more
doaj   +1 more source

Bounded and multiperiodic solutions of the system of partial integro-differential equations

Қарағанды университетінің хабаршысы. Математика сериясы, 2019
The system of partial integro - differential equations with an operator of differentiation with respect to directions of vector field is considered. The considering integro - differential equation does not contain space variables.
G.M. Aitenova, Zh.A. Sartabanov, G.A. Abdikalikova , A. Kerimbekov   +3 more
doaj   +1 more source

Optimal parameter selection in Weeks’ method for numerical Laplace transform inversion based on machine learning

Journal of Algorithms & Computational Technology, 2021
The Weeks method for the numerical inversion of the Laplace transform utilizes a Möbius transformation which is parameterized by two real quantities, σ and b .
Patrick O Kano, Moysey Brio, Jacob Bailey   +2 more
doaj   +1 more source

Early Impact of Childhood Opportunity on Neurocognitive Outcomes in Sickle Cell Disease

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neurocognitive impairment is a well‐recognized complication of sickle cell disease (SCD) that begins early in childhood and persists across development. While cerebrovascular injury contributes substantially to risk, neurocognitive deficits are also observed in children without overt or silent cerebral infarctions, suggesting ...
Julia E. LaMotte, Hannah Koch, Olivia A. Coughlin, Jillian R. Bouck, Allie Carter, Seethal A. Jacob   +5 more
wiley   +1 more source

Semiclassical resolvent estimates for Schrödinger matrix operators with eigenvalues crossing [PDF]

, 2003
International audienceFor semiclassical Schrödinger 2 × 2-matrix operators, the symbol of which has crossing eigenvalues, we investigate the semiclassical Mourre theory to derive bounds O(h −1) (h being the semiclassical parameter) for the boundary ...
Thierry Jecko, Jecko, Thierry
core   +1 more source

The Role of Chemotherapy in Pediatric Myoepithelial Carcinoma: A Systematic Review of the Literature

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Myoepithelial carcinoma (MEC) in pediatric patients is a rare and aggressive malignancy characterized by heterogeneous morphology and variable molecular features. The optimal role of chemotherapy remains unclear. We conducted a systematic review according to PRISMA 2020 guidelines to evaluate chemotherapy in pediatric and young‐adult patients ...
Marco Salvi, Maria Carmen Affinita, Giulia Fichera, Luisa Santoro, Angela Scagnellato, Calogero Virgone, Elena Poli, Gianni Bisogno   +7 more
wiley   +1 more source

Whole space case for solution formula of Korteweg type fluid motion in R3 [PDF]

E3S Web of Conferences
In this paper we consider the solution formula of linearized diffusive capillary model of Korteweg type without surface tension in three-dimensional Euclidean space ℝ3 using Fourier transform.
Bagus Suhada Dede, Maryani Sri, Renny Renny, Triyani Triyani, Hendriya Guswanto Bambang, Kartiwi Mira   +5 more
doaj   +1 more source