Results 21 to 30 of about 671,076 (285)

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

Sequence homology at the breakpoint and clinical phenotype of mitochondrial DNA deletion syndromes. [PDF]

open access: yesPLoS ONE, 2010
Mitochondrial DNA (mtDNA) deletions are a common cause of mitochondrial disorders. Large mtDNA deletions can lead to a broad spectrum of clinical features with different age of onset, ranging from mild mitochondrial myopathies (MM), progressive external ...
Bekim Sadikovic   +8 more
doaj   +1 more source

Sums of lens spaces bounding rational balls [PDF]

open access: yes, 2007
We classify connected sums of three-dimensional lens spaces which smoothly bound rational homology balls. We use this result to determine the order of each lens space in the group of rational homology 3-spheres up to rational homology cobordisms, and to ...
Lisca, Paolo
core   +1 more source

Torsion in one-term distributive homology [PDF]

open access: yes, 2013
The one-term distributive homology was introduced by J.H.Przytycki as an atomic replacement of rack and quandle homology, which was first introduced and developed by R.Fenn, C.Rourke and B.Sanderson, and J.S.Carter, S.Kamada and M.Saito.
Alissa S. Crans   +3 more
core   +3 more sources

Reflexive and dihedral (co)homology of a pre-additive category

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
The group dihedral homology of an algebra over a field with characteristic zero was introduced by Tsygan (1983). The dihedral homology and cohomology of an algebra with involution over commutative ring with identity, associated with the small category ...
Yasien Gh. Gouda
doaj   +1 more source

Default Mode Network Analysis of APOE Genotype in Cognitively Unimpaired Subjects Based on Persistent Homology

open access: yesFrontiers in Aging Neuroscience, 2020
Current researches on default mode network (DMN) in normal elderly have mainly focused on finding some dysfunctional areas with decreased or increased connectivity. The global network dynamics of apolipoprotein E (APOE) e4 allele group is rarely studied.
Liqun Kuang   +6 more
doaj   +1 more source

On S3-equivariant homology

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We prove that the group S3 (norm 1 quaternions) cannot be a geometric realization of a crossed simplicial group and construct an exact sequence connecting S3-equivariant homology of an S3-space with its Pin(2)-equivariant homology.
Mohamed Elhamdadi
doaj   +1 more source

Homology cylinders and the acyclic closure of a free group

open access: yes, 2005
We give a Dehn-Nielsen type theorem for the homology cobordism group of homology cylinders by considering its action on the acyclic closure, which was defined by Levine, of a free group. Then we construct an additive invariant of those homology cylinders
Brown   +11 more
core   +3 more sources

Cloning and sequence analysis of E0 gene of virulent classical swine fever virus isolates in Shaanxi Province in 2006 — 2007

open access: yes浙江大学学报. 农业与生命科学版, 2010
According to the published genetic sequences of reference strain Shimen on GenBank, two pairs of primers were synthesized to amplify the E0 gene of nine prevalent virulent classical swine fever virus (CSFV) isolates from swine samples in Shaanxi Province
WU Xu-jin, ZHU Xiao-fu, CHEN De-kun
doaj   +1 more source

Trees, fundamental groups and homology groups

open access: yesAnnals of Pure and Applied Logic, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Katsuya Eda, Masasi Higasikawa
openaire   +1 more source

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