نتایج جستجو برای: mapping

تعداد نتایج: 198393  

ژورنال: پژوهش های ریاضی 2019

Introduction Let  be a nonempty subset of a normed linear space . A self-mapping  is said to be nonexpansive provided that  for all . In 1965, Browder showed that every nonexpansive self-mapping defined on a nonempty, bounded, closed and convex subset of a uniformly convex Banach space , has a fixed point. In the same year, Kirk generalized this existence result by using a geometric notion of ...

Journal: :journal of plant physiology & breeding 2013
hossein sabouri ahmad reza dadras atefeh sabouri mahnaz katouzi

in the current study, a set of 96 recombinant inbred lines (ril) at f8, derived from a cross between two varieties, anbarbu (sensitive to drought stress) and sepidroud (tolerant to drought stress) were used. the experiment was performed at gonbad kavous located in the golestan province of iran in 2010–2011 using two augmented designs at normal and stress conditions, separately. the ril populati...

In this paper, characterizations of the degree to which a mapping $mathcal{T} : L^{X}longrightarrow M$ is an $(L, M)$-fuzzy topology are studied in detail.What is more, the degree to which an $L$-subset is an $L$-open set with respect to $mathcal{T}$ is introduced.Based on that, the degrees to which a mapping $f: Xlongrightarrow Y$ is continuous,open, closed or a quotient mapping with respect t...

Journal: :اکو هیدرولوژی 0
حمید نوری . استادیار، گروه منابع طبیعی، دانشگاه ملایر، ایران علی رضا ایلدرومی دانشیار، گروه منابع طبیعی، دانشگاه ملایر، ایران مهدی سپهری مربی، گروه منابع طبیعی، دانشگاه ملایر، ایران نبی الله سپهری مربی، گروه آبیاری و زهکشی، دانشگاه بوعلی سینا، ایران محمد مهدی آرتیمانی مربی، گروه منابع طبیعی، دانشگاه لرستان، ایران

the flood is one of the natural disasters that doesnt create itself but the landuse change will be caused it that makes a lot of human and financial losses every year. in this study in gonbad chi basin to assess the impact of watershed mechanical operation on flood mapping used fuzzy method and ahp method and composition of slope mapping, landuse, permeability and flow accumulation that called ...

Introduction: Promoting meaningful learning is one of the main objectives of education and an important factor in promoting creative thinking, critical thinking and problem-solving abilities in learners. Also, evaluating students’ learning is a teachers’ duty. The aim of this study was to compare the effect of teaching by lecture or concept mapping on cognitive learning levels of midwifery stud...

Proving  fixed point theorem in a fuzzy metric space is not possible for  Meir-Keeler contractive mapping. For this, we introduce the notion of $c_0$-triangular fuzzy metric space. This new space allows us to prove some fixed point theorems for  Meir-Keeler contractive mapping. As some pattern we introduce the class of $alphaDelta$-Meir-Keeler contractive and we establish some results of fixed ...

Journal: :mathematics interdisciplinary research 0
tatjana dosenovic faculty of technology, university of novi sad, serbia abdolsattar gholidahneh department of mathematics, qaemshahr branch, islamic azad univer- sity, qaemshahr, iran shaban sedghi department of mathematics, qaemshahr branch, islamic azad university, qaemshahr, iran stojan radenovic faculty of mechanical engineering, university of belgrade, kraljice marije 16, 11120 beograd, serbia, department of mathematics, university of novi pazar, novi pazar, serbia

in the present paper, we introduces the notion of integral type contractive mapping with respect to ordered s-metric space and prove some coupled common fixed point results of integral type contractive mapping in ordered s-metric space. moreover, we give an example to support our main result.

Journal: :iranian journal of fuzzy systems 2014
dhananjay gopal calogero vetro

motivated by samet et al. [nonlinear anal., 75(4) (2012), 2154-2165], we introduce the notions of $alpha$-$phi$-fuzzy contractive mapping and $beta$-$psi$-fuzzy contractive mapping and prove two theorems which ensure the existence and uniqueness of a fixed point for these two types of mappings. the presented theorems extend, generalize and improve the corresponding results given in the literature.

Journal: :bulletin of the iranian mathematical society 2013
h. piri

n this paper , we propose a generalized iterative method forfinding a common element of the set of fixed points of a singlenonexpannsive mapping and the set of solutions of two variationalinequalities with inverse strongly monotone mappings and strictlypseudo-contractive of browder-petryshyn type mapping. our resultsimprove and extend the results announced by many others.

Journal: :تحقیقات نظام سلامت 0
یدالله محرابی گروه اپیدمیولوژی، دانشکده بهداشت، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران بهزاد مهکی گروه آمار زیستی، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران امیر کاوسی گروه علوم پایه، دانشکده سلامت، ایمنی و محیط زیست، دانشگاه علوم پزشکی شهید بهشتی، تهران، ایران

abstract   disease mapping includes a set of statistical techniques that lead to provide clean maps based on estimation of the incidence, prevalence and mortality rates for the users to be able to estimate the distribution of disease reliably. the main aims of disease mapping are to: describe the spatial variation in disease incidence for the formulation of etiological hypotheses; identify area...

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