Results 1 to 10 of about 307,157 (265)

Annotation-free delineation of prokaryotic homology groups. [PDF]

open access: yesPLoS Computational Biology, 2022
Phylogenomic studies of prokaryotic taxa often assume conserved marker genes are homologous across their length. However, processes such as horizontal gene transfer or gene duplication and loss may disrupt this homology by recombining only parts of genes,
Yongze Yin, Huw A Ogilvie, Luay Nakhleh
doaj   +2 more sources

Homology groups in CR-warped products of complex space forms [PDF]

open access: yesHeliyon
In the present paper, by using the result of Lawson-Simons [15], we adopt a different technique to show that there are no stable integral q-currents and a non-trivial homology group in a compact oriented CR-warped product submanifold Nn in a complex ...
Yanlin Li   +4 more
doaj   +2 more sources

On the Topology of Warped Product Pointwise Semi-Slant Submanifolds with Positive Curvature

open access: yesMathematics, 2021
In this paper, we obtain some topological characterizations for the warping function of a warped product pointwise semi-slant submanifold of the form Ωn=NTl×fNϕk in a complex projective space CP2m(4).
Yanlin Li   +3 more
doaj   +1 more source

The Homology of Warped Product Submanifolds of Spheres and Their Applications

open access: yesMathematics, 2023
The aim of the current article is to formulate sufficient conditions for the Laplacian and a gradient of the warping function of a compact warped product submanifold Σβ1+β2 in a unit sphere Sd that provides trivial homology and fundamental groups.
Lamia Saeed Alqahtani   +3 more
doaj   +1 more source

On the homology groups $H_k(\mathbb{C}\Omega_n)$, $k=1, ..., n$

open access: yesResearches in Mathematics, 2021
In the paper the homology groups of the $(2n+1)$-dimensional CW-complex $\mathbb{C}\Omega_n$ are investigated. The spaces $\mathbb{C}\Omega_n$ consist of complex-valued functions and generalize the widely known in the approximation theory spaces ...
A.M. Pasko
doaj   +1 more source

The homology groups $H_{n+1} \left( \mathbb{C}\Omega_n \right)$

open access: yesResearches in Mathematics, 2022
The topic of the paper is the investigation of the homology groups of the $(2n+1)$-dimensional CW-complex $\mathbb{C}\Omega_n$. The spaces $\mathbb{C}\Omega_n$ consist of complex-valued functions and are the analogue of the spaces $\Omega_n$, widely ...
A.M. Pasko
doaj   +1 more source

Homology Groups in Warped Product Submanifolds in Hyperbolic Spaces

open access: yesJournal of Mathematics, 2021
In this paper, we show that if the Laplacian and gradient of the warping function of a compact warped product submanifold Ωp+q in the hyperbolic space ℍm−1 satisfy various extrinsic restrictions, then Ωp+q has no stable integral currents, and its ...
Yanlin Li   +3 more
doaj   +1 more source

A review of some properties of persistent homology

open access: yesDesimal, 2023
Every day, enormous complex geometric data are accumulating rapidly, and qualitative analysis is needed, which cannot be done properly without studying the shapes of those data.
Md. Safik Ullah   +5 more
doaj   +1 more source

Homology Groups of a Pipeline Petri Net

open access: yesМоделирование и анализ информационных систем, 2013
Petri net is said to be elementary if every place can contain no more than one token. In this paper, it is studied topological properties of the elementary Petri net for a pipeline consisting of n functional devices. If the work of the functional devices
A. A. Husainov   +2 more
doaj   +3 more sources

The homology groups of the space $\Omega_n(m)$

open access: yesResearches in Mathematics, 2019
The spaces $\Omega_n(m)$ that generalize the spaces $\Omega_n$ are introduced. In order to investigate the homotopy invariants of the space $\Omega_n(m)$ the CW-structure of the space $\Omega_n(m)$ is built.
A.M. Pasko
doaj   +1 more source

Home - About - Disclaimer - Privacy