Results 81 to 90 of about 761,097 (307)

Triple Operators of Order n on a Hilbert Space

open access: yesTikrit Journal of Pure Science, 2018
In this paper, we introduce a new class of operators on a complex Hilbert space  which is called triple operators of order n. An operator  is called triple operator of order n if  where  is the adjoint of the operator .
Elaf Sabah Abdulwahid Rijab
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Nineteenth Illinois Custom Spray Operators' Training School: summaries of presentations [PDF]

open access: yes, 1967
Made available in DSpace on 2016-03-17T21:24:39Z (GMT). No. of bitstreams: 2 7912186_1967.pdf: 14876780 bytes, checksum: bea140f4d1ecf573a0f2391ecdc2df37 (MD5) license.txt: 4846 bytes, checksum: 927d59ba442de31571446841df3d90ca (MD5) Previous issue ...
Illinois Custom Spray Operators' School
core  

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Some remarks on degenerate hypoelliptic Ornstein-Uhlenbeck operators [PDF]

open access: yes, 2014
We study degenerate hypoelliptic Ornstein–Uhlenbeck operators in spaces with respect to invariant measures. The purpose of this article is to show how recent results on general quadratic operators apply to the study of degenerate hypoelliptic Ornstein ...
Pavliotis, Grigorios   +8 more
core   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Eighteenth Illinois Custom Spray Operators' Training School: summaries of presentations [PDF]

open access: yes, 1966
Made available in DSpace on 2016-03-17T21:24:38Z (GMT). No. of bitstreams: 2 7912186_1966.pdf: 13598820 bytes, checksum: db1fa5d0d5989386ccddb7340b143729 (MD5) license.txt: 4846 bytes, checksum: 927d59ba442de31571446841df3d90ca (MD5) Previous issue ...
Illinois Custom Spray Operators' School
core  

Norm and Numerical Radius Inequalities for a Product of Two Linear Operators in Hilbert Spaces [PDF]

open access: yes, 2006
The main aim of the present paper is to establish some norm and numerical radius inequalities for the composite operator BA under suitable assumptions for the transform Cα ,β (T) := (T∗ −α I)(β I−T) , where α ,β ∈ C and T ∈ B(H), of the operators ...
S. S. Dragomir   +2 more
core   +2 more sources

A modification of Hardy-Littlewood maximal function on Lie groups [PDF]

open access: yesAUT Journal of Mathematics and Computing
For a real-valued function $f$ on a metric measure space $(X,d,\mu)$ the Hardy-Littlewood centered-ball maximal-function of $f$ is given by the `supremum-norm':$$Mf(x):=\sup_{r>0}\frac{1}{\mu(\mathcal{B}_{x,r})}\int_{\mathcal{B}_{x,r}}|f|d\mu.$$In this ...
Maysam Maysami Sadr
doaj   +1 more source

A Survey on Operator Monotonicity, Operator Convexity, and Operator Means [PDF]

open access: yesInternational Journal of Analysis, 2015
This paper is an expository devoted to an important class of real-valued functions introduced by Löwner, namely, operator monotone functions. This concept is closely related to operator convex/concave functions. Various characterizations for such functions are given from the viewpoint of differential analysis in terms of matrix of divided differences ...
openaire   +1 more source

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