Results 101 to 110 of about 142,585 (257)

Involutions of Iwahori-Hecke algebras and representations of fixed subalgebras [PDF]

open access: yesarXiv, 2008
We establish branching rules between some Iwahori-Hecke algebra of type B and their subalgebras which are defined as fixed subalgebras by involutions including Goldman involution. The Iwahori-Hecke algebra of type D is one of such fixed subalgebras. We also obtain branching rules between those fixed subalgebras and their intersection subalgebra.
arxiv  

Histochemistry on vibratome sections of fish tissue: a comparison of fixation and embedding methods

open access: yesAquatic Biology, 2015
Despite improvements in imaging techniques during recent years, for many non-model systems the fixation of tissues followed by embedding and sectioning for histochemical or immunohistochemical staining remains an important technique in vertebrate ...
B Grunow   +4 more
doaj   +1 more source

PPF dependent fixed points in A-closed Razumikhin classes [PDF]

open access: yesarXiv, 2014
The PPF dependent fixed point result in algebraically closed Razumikhin classes due to Agarwal et al [Fixed Point Theory Appl., 2013, 2013:280] is identical with its constant class counterpart; and this, in turn, is reducible to a fixed point principle involving SVV type contractions (over the subsequent metric space of initial Banach structure ...
arxiv  

Communic Acids: Occurrence, Properties and Use as Chirons for the Synthesis of Bioactive Compounds

open access: yesMolecules, 2012
Communic acids are diterpenes with labdane skeletons found in many plant species, mainly conifers, predominating in the genus Juniperus (fam. Cupresaceae).
Alejandro F. Arteaga   +4 more
doaj   +1 more source

A note on fixed points of endofunctors [PDF]

open access: yesarXiv, 2017
In this note, we deal with the fixed points of an endofunctor $F: \mathcal{C} \longrightarrow \mathcal{C}$. Three classes of fixed points are introduced, and the case when $F$ is an endomorphism of a category with pretopology is investigated. We show existence of induced structures on the category of fixed points, and, when a pretopology is defined ...
arxiv  

New coincidence point and fixed point theorems for essential distances and $e^{0}$-metrics [PDF]

open access: yesarXiv, 2019
In this paper, we establish some new fixed point theorems and coincidence point theorems for essential distances and $e^{0}$-metrics which generalize and improve Berinde-Berinde's fixed point theorem, Mizoguchi-Takahashi's fixed point theorem, Nadler's fixed point theorem and Banach contraction principle and many known results in the literature.
arxiv  

On Characterizations of Fixed and Common Fixed Points

open access: yesJournal of Mathematical Analysis and Applications, 1998
In this paper we give necessary and sufficient conditions for the existence of fixed and common fixed points of self-mappings of metric spaces. Our results generalize, improve, and unify some results of Chang, Jungck, Fisher, and Dien.
Yeol Je Cho, Yuguang Xu, Zeqing Liu
openaire   +2 more sources

Comparison of honey with ethanol as an oral cytological fixative: A pilot study

open access: yesJournal of Cytology, 2015
Introduction: The fixation of cytological smears using ethanol is the gold standard. But, there exists a quench to search a new alternative for it due to it being expensive, carcinogenic and not freely available.
Amita Singh   +5 more
doaj   +1 more source

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