Results 21 to 30 of about 413 (110)
Spectrum Approximation Beyond Fast Matrix Multiplication: Algorithms and Hardness [PDF]
, 2018 Understanding the singular value spectrum of an n x n matrix A is a fundamental task in countless numerical computation and data analysis applications.
Musco, Cameron +4 more
core +2 more sources
Combinatorics and geometry of finite and infinite squaregraphs
, 2009 Squaregraphs were originally defined as finite plane graphs in which all inner faces are quadrilaterals (i.e., 4-cycles) and all inner vertices (i.e., the vertices not incident with the outer face) have degrees larger than three.
David Eppstein +4 more
core +2 more sources
Angewandte Chemie, Volume 136, Issue 42, October 14, 2024.Progress in the development of non‐alternant nanographenes containing N‐doped non‐hexagonal pairs, including N‐doped pentagon‐heptagon (5–7) pairs, N‐doped pentagon‐octagon (5–8) pairs and N‐doped heptagon‐heptagon (7–7) pairs, is comprehensively covered in this review.
Huan Luo, Junzhi Liu
wiley +2 more sources
Area limit laws for symmetry classes of staircase polygons
, 2007 We derive area limit laws for the various symmetry classes of staircase polygons on the square lattice, in a uniform ensemble where, for fixed perimeter, each polygon occurs with the same probability.
B. THATTE +13 more
core +1 more source
, 2013 Spin-polarized first-principles calculations have been performed to tune the electronic and optical properties of graphene (G) and boron-nitride (BN) quantum dots (QDs) through molecular charge-transfer using Tetracyanoquinodimethane (TCNQ) and ...
Bandyopadhyay, Arkamita +2 more
core +1 more source
Iterative Synthesis of Pentacene Derivatives with Continuous Boron–Oxygen Bonds
Angewandte Chemie International Edition, EarlyView.An iterative synthetic strategy enables the controlled introduction of continuous multiple B–O bonds at the zigzag edge of acenes. A simple two‐step cycle—ipso iodination and Suzuki cross‐coupling/condensation—efficiently constructs BO‐acenes ranging from naphthalene to pentacene.
Seonghwa Jeong +8 more
wiley +1 more source
Fast Recognition of Partial Star Products and Quasi Cartesian Products [PDF]
, 2013 This paper is concerned with the fast computation of a relation $\R$ on the edge set of connected graphs that plays a decisive role in the recognition of approximate Cartesian products, the weak reconstruction of Cartesian products, and the recognition ...
Hellmuth, Marc +2 more
core +4 more sources
Electrospun conducting polymers: recent trends and the transition towards a sustainable future
Polymer International, EarlyView.This review discusses the electrospinning of conducting polymers, detailing procedures, fibrous morphologies, improved properties, applications in electronics, and challenges, while outlining future directions for nanofibre‐based devices in various fields.
Xenofon Karagiorgis +3 more
wiley +1 more source
, 2001 A {\it cluster of cycles} (or {\it $(r,q)$-polycycle}) is a simple planar 2--co nnected finite or countable graph $G$ of girth $r$ and maximal vertex-degree $q$, which admits {\it $(r,q)$-polycyclic realization} on the plane, denote it by $P(G)$, i.e ...
Archdeacon +15 more
core +2 more sources
Chemistry–Methods, Volume 5, Issue 12, November 2025.Expanded porphyrins, with their flexible structures and rich redox chemistry, offer a powerful platform to explore how aromaticity shapes molecular properties. This review introduces a multidimensional framework to quantify Hückel and Möbius aromaticity and examines its impact on the spectroscopic behavior across redox‐ and topology‐controlled expanded
Freija De Vleeschouwer +2 more
wiley +1 more source