نتایج جستجو برای: i_f oplus supplemented module

تعداد نتایج: 102874  

Journal: :The Astronomical Journal 2023

TOI-561 is a galactic thick disk star hosting an ultra-short period (0.45 day orbit) planet with radius of 1.37 R$_{\oplus}$, making it one the most metal-poor ([Fe/H] = -0.41) and oldest ($\sim$10 Gyr) sites where Earth-sized has been found. We present new simultaneous radial velocity measurements (RVs) from Gemini-N/MAROON-X Keck/HIRES, which we combined literature RVs to derive mass M$_{b}$=...

Journal: :Archives of otolaryngology--head & neck surgery 2009
Amanda Hu Tim Wilson Hanif Ladak Peter Haase Kevin Fung

OBJECTIVES To create a 3-dimensional (3D) educational computer model of the larynx, to assess the feasibility of this learning module on a Web-based platform, and to obtain student feedback on the module. DESIGN Male and female adult cadaveric necks were scanned with microcomputed tomographic and magnetic resonance imaging scanners. Key structures were identified on each slice of the computed...

Journal: :Astronomy and Astrophysics 2021

AU Mic is a young, active star whose transiting planet was recently detected. We report our analysis of its TESS data, where we modeled the BY Draconis type quasi-periodic rotational modulation by starspots simultaneously to flaring activity and planetary transits. measured flare occurrence rate 6.35 flares per day for with amplitudes in range $0.06\% < f_{\rm max} 1.5\%$ flux. employed Bayesia...

Journal: :journal of algebraic systems 2014
ashkan nikseresht habib sharif

we state several conditions under which comultiplication and weak comultiplication modulesare cyclic and study strong comultiplication modules and comultiplication rings. in particular,we will show that every faithful weak comultiplication module having a maximal submoduleover a reduced ring with a finite indecomposable decomposition is cyclic. also we show that if m is an strong comultiplicati...

Journal: :bulletin of the iranian mathematical society 2011
n ashrafi n. pouyan

in this paper, we show that every element of a discrete module is a sum of two units if and only if its endomorphism ring has no factor ring isomorphic to $z_{2}$. we also characterize unit sum number equal to two for the endomorphism ring of quasi-discrete modules with finite exchange property.

Journal: :iranian journal of science and technology (sciences) 2008
a. shafiei deh abad

in this paper we introduce the concept of dirac structures on (hermitian) modules and vectorbundles and deduce some of their properties. among other things we prove that there is a one to onecorrespondence between the set of all dirac structures on a (hermitian) module and the group of allautomorphisms of the module. this correspondence enables us to represent dirac structures on (hermitian)mod...

Journal: :The Astronomical Journal 2021

We present updated radial-velocity (RV) analyses of the AU Mic system. is a young (22 Myr) early M dwarf known to host two transiting planets - $P_{b}\sim8.46$ days, $R_{b}=4.38_{-0.18}^{+0.18}\ R_{\oplus}$, $P_{c}\sim18.86$ $R_{c}=3.51_{-0.16}^{+0.16}\ R_{\oplus}$. With visible RVs from CARMENES-VIS, CHIRON, HARPS, HIRES, {\sc {\textsc{Minerva}}}-Australis, and TRES, as well near-infrared (NIR...

Let  be a commutative ring and  be a unitary  module. We define a semi prime sub module of a module and consider various properties of it. Also we define semi-radical of a sub module of a module and give a number of its properties. We define modules which satisfy the semi-radical formula and present the existence of such a module.

Journal: :Communications in Mathematical Physics 2022

Given two coprime numbers $$q_1$$ and $$q_2$$ , let $$\Gamma =q_1\mathbb {Z}\oplus q_2 \mathbb {Z} $$ . Let $$\Delta +X$$ be the discrete periodic Schrödinger operator on $$\mathbb {Z}^2$$ where is Laplacian $$X:\mathbb {Z}^2\rightarrow {C}$$ -periodic. In this paper, we develop tools from complex analysis to study isospectrality of operators. We prove that if -periodic potentials X Y are Fermi...

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