Results 31 to 40 of about 1,628 (120)

Time complexity and gate complexity

open access: yes, 2010
We formulate and investigate the simplest version of time-optimal quantum computation theory (t-QCT), where the computation time is defined by the physical one and the Hamiltonian contains only one- and two-qubit interactions.
D. J. Tannor   +5 more
core   +1 more source

Towards Practical Typechecking for Macro Tree Transducers [PDF]

open access: yes, 2007
Macro tree transducers (mtt) are an important model that both covers many useful XML transformations and allows decidable exact typechecking. This paper reports our first step toward an implementation of mtt typechecker that has a practical efficiency ...
Frisch, Alain, Hosoya, Haruo
core   +4 more sources

Generalizations of Wiener polarity index and terminal Wiener index

open access: yes, 2012
In theoretical chemistry, distance-based molecular structure descriptors are used for modeling physical, pharmacologic, biological and other properties of chemical compounds.
Ilic, Aleksandar, Ilic, Milovan
core   +1 more source

Computational Analysis of Benzenoid Systems Using Valency‐Based Entropy Metrics and Topological Indices

open access: yesComplexity, Volume 2025, Issue 1, 2025.
Nanomaterials find application in electronics, drugs, and biology among other disciplines. Benzenoid systems with their homogeneous structures are especially fit for computer study because of their predictable geometries. This work investigates computational analysis of benzenoid systems using valency‐based entropy measurements and degree‐based ...
Muhammad Kamran   +5 more
wiley   +1 more source

A Statistical Learning Method for the Prediction of Anti‐HIV Activity Using Topological Indices Based on Steiner Eccentricity

open access: yesJournal of Applied Mathematics, Volume 2025, Issue 1, 2025.
The prediction of molecular activity plays an important role in drug discovery. Various approaches have been devised to predict anti‐HIV activity based on topological indices. This study proposes Steiner 3‐eccentric connectivity index and Steiner 3‐eccentric distance sum and applies them to predict anti‐HIV activity of a molecule.
Xingfu Li, Arpan Hazra
wiley   +1 more source

A Unified Approach to Image Recognition and Cryptography via Flexible Weak Inverse Property Quasigroups

open access: yesJournal of Function Spaces, Volume 2025, Issue 1, 2025.
Nonassociative algebra presents multiple options for comprehending and dealing with difficulties in graph theory, artificial intelligence, and cryptography. Its distinctive traits introduce genuine concepts and procedures not found in conventional associative algebra, yielding to new results from studies and breakthroughs in multiple disciplines ...
Mohammad Mazyad Hazzazi   +5 more
wiley   +1 more source

Computation of Differential, Integral Operators and Quantitative Structure–Property Analysis of Boron α‐Icosahedral Nanosheet

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
In its crystalline state, the α‐icosahedral nanosheet of boron demonstrates superconductivity and thermal electronic properties. Mathematical research on a graph’s structure yields a graph descriptor, a numerical measure. Chemical graph theory employs connectivity descriptors to analyze molecular structures, providing crucial insights into many ...
Khalil Hadi Hakami   +3 more
wiley   +1 more source

M‐Polynomial and NM‐Polynomial Methods for Topological Indices of Polymers

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2024, Issue 1, 2024.
Topological indices (TIs) are numerical tools widely applied in chemometrics, biomedicine, and bioinformatics for predicting diverse physicochemical attributes and biological activities within molecular structures. Despite their significance, the challenges in deriving TIs necessitate novel approaches.
Mohammed Yasin H   +4 more
wiley   +1 more source

An Algebraic Approach of Topological Indices Connected with Finite Quasigroups

open access: yesJournal of Function Spaces, Volume 2024, Issue 1, 2024.
In mathematical chemistry, the algebraic polynomial serves as essential for calculating the most accurate expressions of distance‐based, degree‐distance‐based, and degree‐based topological indices. The chemical reactivity of molecules, which includes their tendency to engage in particular chemical processes or go through particular reactions, can be ...
Muhammad Nadeem   +4 more
wiley   +1 more source

The Causal Effects of Nuclear Fusion Reactors, Human Development, and Economic Growth on Nuclear Energy Consumption in the United States

open access: yesInternational Journal of Energy Research, Volume 2024, Issue 1, 2024.
The study is aimed at investigating the effects of nuclear fusion reactors, human development, and economic growth on nuclear energy consumption in the United States from 1990 to 2019 using time and frequency causality analyses. The time domain causality analysis examined the relationship between variables over time using a single test statistic, while
Mucahit Aydin   +2 more
wiley   +1 more source

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