نتایج جستجو برای: norlund matrix

تعداد نتایج: 364741  

Journal: :computational methods for differential equations 0
chun-hui hsiao no.101, sec. 2, jhongcheng rd., shihlin district, taipei city 111, taiwan, r.o.c.

this paper presents a rational haar wavelet operational method for solving the inverse laplace transform problemand improves inherent errors from irrational haar wavelet. the approach is thus straightforward, rather simple andsuitable for computer programming. we define that $p$ is the operational matrix for integration of the orthogonalhaar wavelet. simultaneously, simplify the formulaes of li...

Journal: :bulletin of the iranian mathematical society 0
a. golbabai school of mathematics‎, ‎iran‎ ‎university of science and technology‎, ‎p‎.‎o‎. ‎box 16846-13114‎, ‎tehran‎, ‎iran. s. p. a. beik school of mathematics‎, ‎iran‎ ‎university of science and technology‎, ‎p‎.‎o‎. ‎box 16846-13114‎, ‎tehran‎, ‎iran d. k. salkuyeh faculty of mathematical sciences‎, ‎university of guilan‎, ‎rasht‎, ‎iran

abstract. the main contribution of the current paper is to propose a new effective numerical method for solving the first-order linear matrix differential equations. properties of the legendre basis operational matrix of integration together with a collocation method are applied to reduce the problem to a coupled linear matrix equations. afterwards, an iterative algorithm is examined for solvin...

Mikail Et, Naim L. Braha

Fuzzy set theory has entered into a large variety of disciplines of sciences,technology and humanities having established itself as an extremely versatileinterdisciplinary research area. Accordingly different notions of fuzzystructure have been developed such as fuzzy normed linear space, fuzzytopological vector space, fuzzy sequence space etc. While reviewing theliterature in fuzzy sequence sp...

Journal: :bulletin of the iranian mathematical society 2012
m. mohseni moghadam fatemeh panjeh ali beik

consider the linear system ax=b where the coefficient matrix a is an m-matrix. in the present work, it is proved that the rate of convergence of the gauss-seidel method is faster than the mixed-type splitting and aor (sor) iterative methods for solving m-matrix linear systems. furthermore, we improve the rate of convergence of the mixed-type splitting iterative method by applying a precondition...

Journal: :journal of mathematical modeling 2015
ahmad golbabai samaneh panjeh ali beik

the current paper contributes a novel framework for solving a class of linear matrix differential equations. to do so, the operational matrix of the derivative based on the shifted bernoulli polynomials together with the collocation method are exploited to reduce the main problem to system of linear matrix equations. an error estimation of presented method is provided. numerical experiments are...

Journal: :journal of industrial engineering, international 2011
prasenjit chatterjee poulomi mukherjee shankar chakraborty

in today’s highly competitive manufacturing environment, an effective supplier selection process is very important for the success of any business organization. selection of the best supplier is always a difficult task for the purchasing manager. suppliers have varied strengths and weaknesses which require careful assessment by the purchasing manager before selecting and ranking them. any suppl...

Journal: :international journal of advanced structural engineering 2010
ashwin g. hansora mangubhai n. patel bharatbhai b. mistry

this paper presents an auto redundant technique for analysis of grid with curved members.this technique is based on the force method, but in the technique choice of the redundant iscompletely eliminated. the analysis technique is found very effective, accurate andprogrammable. a comprehensive c++ program has been developed to compute internalforces at the end of each member of the grid for diff...

Journal: :bulletin of the iranian mathematical society 0
m. mohseni moghadam shahid bahonar university of kerman fatemeh panjeh ali beik vali-asr university of rafsanjan

consider the linear system ax=b where the coefficient matrix a is an m-matrix. in the present work, it is proved that the rate of convergence of the gauss-seidel method is faster than the mixed-type splitting and aor (sor) iterative methods for solving m-matrix linear systems. furthermore, we improve the rate of convergence of the mixed-type splitting iterative method by applying a precondition...

Journal: :transactions on combinatorics 2015
r. b. bapat sivaramakrishnan sivasubramanian

let $a = (a_{i,j})_{1 leq i,j leq n}$ be an $n times n$ matrixwhere $n geq 2$. let $dt(a)$, its second immanant be the immanant corresponding to the partition $lambda_2 = 2,1^{n-2}$. let $g$ be a connected graph with blocks $b_1, b_2, ldots b_p$ and with$q$-exponential distance matrix $ed_g$. we given an explicitformula for $dt(ed_g)$ which shows that $dt(ed_g)$ is independent of the manner in ...

Journal: :acta medica iranica 0
fattah sotoodehnejadnematalahi department of regenerative biomedicine at cell science research center, royan institute for stem cell biology and technology, acecr, tehran, iran. bernard burke department of infection, immunity and inflammation, university of leicester, leicester, le1 9hn, uk.

one of the main members of the large aggregating proteoglycans (pgs) family is versican which is able to bind to hyaluronate. versican is a chondroitin sulfate proteoglycan and is a key ingredient of the extracellular matrix.  due to its widespread expression in the body, versican is involved in cell adhesion, proliferation and migration. induced expression of versican is often observed in tiss...

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