Results 41 to 50 of about 43,216 (196)

The Equivalent Standard Forms of a Class of Tropical Matrices and Centralizer Groups

open access: yesMathematics
In this paper, the equivalent standard forms of tropical idempotent strongly definite matrices are introduced. In particular, the observation of the equivalent standard forms of tropical idempotent normal matrices is given.
Yanliang Cheng
doaj   +1 more source

Advances in large DNA fragment assembly for microbial cell factory engineering

open access: yesQuantitative Biology, Volume 14, Issue 3, September 2026.
Abstract The efficient, rapid, and reliable assembly of DNA fragments is essential for advancing metabolic engineering and synthetic biology. With the rapid advancement of DNA synthesis and assembly technologies, the scale of DNA assembly has expanded from single genes to metabolic pathways and even genomes.
Yu Zhang   +5 more
wiley   +1 more source

On Idempotent Matrices

open access: yesThe Annals of Mathematical Statistics, 1966
The author introduces a lemma to prove rather special theorems on the independence of quadratic forms.
openaire   +3 more sources

Technologies for engineering repetitive DNA

open access: yesQuantitative Biology, Volume 14, Issue 3, September 2026.
Abstract Repetitive DNA, a fundamental architectural element of genomes, is widespread across organisms and comprises about 54% of the human genome. With advances in long‐read sequencing and bioinformatics approaches, highly repetitive sequences can now be characterized in depth.
Shuting Ma, Yali Cui, Yi Wu
wiley   +1 more source

Self-adjoint symmetry operators connected with the magnetic Heisenberg ring

open access: yes, 2009
We consider symmetry operators a from the group ring C[S_N] which act on the Hilbert space H of the 1D spin-1/2 Heisenberg magnetic ring with N sites. We investigate such symmetry operators a which are self-adjoint (in a sence defined in the paper) and ...
Bernd Fiedler   +19 more
core   +1 more source

A multi‐source fusion and dynamic verification framework for scientific knowledge graph construction: Methods, evaluation, and applications

open access: yesAI Magazine, Volume 47, Issue 2, Summer 2026.
Abstract The exponential growth of scientific literature—over 2.5 million papers and 3.5 million patents annually—poses critical challenges for knowledge discovery. To address these, we propose SCIMKG (Scientific Knowledge Graph), a framework for constructing scientific knowledge graphs via multi‐source heterogeneous multi‐source.
Erxi Zhu, Yuan Hu
wiley   +1 more source

All Regular-Solid Varieties of Idempotent Semirings

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2017
The lattice of all regular-solid varieties of semirings splits in two complete sublattices: the sublattice of all idempotent regular-solid varieties of semirings and the sublattice of all normal regular-solid varieties of semirings.
Hounnon Hippolyte
doaj   +1 more source

On the formal power series algebras generated by a vector space and a linear functional [PDF]

open access: yesJournal of Hyperstructures, 2017
Let R be a vector space ( on C) and ϕ be an element of R∗ (the dual space of R), the product r · s = ϕ(r)s converts R into an associative algebra that we denote it by Rϕ.
A. R. Khoddami
doaj   +1 more source

Eulerian idempotent, pre-Lie logarithm and combinatorics of trees [PDF]

open access: yes, 2017
The aim of this paper is to bring together the three objects in the title. Recall that, given a Lie algebra $\mathfrak{g}$, the Eulerian idempotent is a canonical projection from the enveloping algebra $U(\mathfrak{g})$ to $\mathfrak{g}$.
Bandiera, Ruggero, Schaetz, Florian
core   +1 more source

Can we repudiate ontology altogether?

open access: yesNoûs, Volume 60, Issue 2, Page 264-292, June 2026.
Abstract Ontological nihilists repudiate ontology altogether, maintaining that ontological structure is an unnecessary addition to our theorizing. Recent defenses of the view involve a sophisticated combination of highly expressive but ontologically innocent languages combined with a metaphysics of features—non‐objectual, complete but modifiable states
Christopher J. Masterman
wiley   +1 more source

Home - About - Disclaimer - Privacy