نتایج جستجو برای: lattice

تعداد نتایج: 93303  

Journal: :international journal of group theory 2015
alexey stepanov

the present note arises from the author's talk at the conference ``ischia group theory 2014''. for subgroups $fle n$ of a group $g$ denote by $lat(f,n)$ the set of all subgroups of $n$, containing $f$. let $d$ be a subgroup of $g$. in this note we study the lattice $ll=lat(d,g)$ and the lattice $ll'$ of subgroups of $g$, normalized by $d$. we say that $ll$ satisfies sandwich classification theo...

Journal: :Quantum Science and Technology 2018

Journal: :transport phenomena in nano and micro scales 0
a. r. rahmati department of mechanical engineering, university of kashan, kashan, i. r.iran r. ehsani department of mechanical engineering, university of kashan, kashan, i. r.iran

because of its kinetic nature and computational advantages, the lattice boltzmann method (lbm) has been well accepted as a useful tool to simulate micro-scale flows. the slip boundary model plays a crucial role in the accuracy of solutions for micro-channel flow simulations. the most used slip boundary condition is the maxwell slip model. the results of maxwell slip model are affected by the ac...

Journal: :iranian journal of fuzzy systems 2013
babington makamba venkat murali

in this paper we study a representation of a fuzzy subgroup $mu$ of a group $g$, as a product of indecomposable fuzzy subgroups called the components of $mu$.  this representation is unique up to the number of components and their isomorphic copies. in the crisp group theory, this is a well-known theorem attributed to remak, krull, and schmidt. we consider the lattice of fuzzy subgroups and som...

Journal: :journal of sciences, islamic republic of iran 2009
m. mohammadzadeh

the statistical analysis of spatial data is usually done under gaussian assumption for the underlying random field model. when this assumption is not satisfied, block bootstrap methods can be used to analyze spatial data. one of the crucial problems in this setting is specifying the block sizes. in this paper, we present asymptotic optimal block size for separate block bootstrap to estimate the...

Journal: :international journal of group theory 2013
jan krempa agnieszka stocka

in this note we are going to survey several invariants of finite groups related either to their orders or to generating sets or to lattices of subgroups. some relations among these invariants will be exhibited. special attention will be paid to monotonicity of them.

Journal: :transport phenomena in nano and micro scales 2015
y. bakhshan a. r. omidvar

micro scale gas flows has attracted significant research interest in the last two decades. in this research, the fluid flow of gases in the stepped micro-channel at a wide range of knudsen number has been analyzed with using the lattice boltzmann (mrt) method. in the model, a modified second-order slip boundary condition and a bosanquet-type effective viscosity are used to consider the velocity...

Journal: :transport phenomena in nano and micro scales 2013
e. fattahi m. farhadi k. sedighi

this work presents a numerical analysis of entropy generation in γ-shaped enclosure that was submitted to the natural convection process using a simple thermal lattice boltzmann method (tlbm) with the boussinesq approximation.  a 2d thermal lattice boltzmann method with 9 velocities, d2q9, is used to solve the thermal flow problem. the simulations are performed at a constant prandtl number (pr ...

Journal: :bulletin of the iranian mathematical society 2013
a. amini harandi

in this paper, using the fixed point theory in cone metric spaces, we prove the existence of a unique solution to a first-order ordinary differential equation with periodic boundary conditions in banach spaces admitting the existence of a lower solution.

Journal: :iranian journal of pharmaceutical sciences 0
hosseinali tabandeh department of pharmaceutics and nanotechnology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran mohammad erfan department of pharmaceutics and nanotechnology, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran

chewable ferrous fumarate tablet is the best iron dosage form for children due to better compliance and lower teeth staining compared to the oral drop. because of the different desirable properties of chewable tablets and the opposing effects of fillers on them, the mathematical experimental design was used as the formulation approach. different series of formulations based on single filler (la...

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