نتایج جستجو برای: space group

تعداد نتایج: 1435595  

Journal: :bulletin of the iranian mathematical society 2013
m. r. farhangdoost

in this paper, by using of frobenius theorem a relation between lie subalgebras of the lie algebra of a top space t and lie subgroups of t(as a lie group) is determined. as a result we can consider these spaces by their lie algebras. we show that a top space with the finite number of identity elements is a c^{∞} principal fiber bundle, by this method we can characterize top spaces.

Journal: :journal of linear and topological algebra (jlta) 2013
a etemad dehkordya m malek mohamad

if we consider some special conditions, we can assume fundamental group of a topological space as a new topological space. in this paper, we will present a number of theorems in topological fundamental group related to semilocally simply connected property for a topological space.

Journal: :Physical Review Letters 2018

Journal: :Group Analysis 2020

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1981

Journal: :international journal of architectural engineering and urban planning 0
razieh rezazadeh tehran maryam mohammadi tehran, karaj

based on a gender equity perspective and within a pluralistic civil society, women should have equal rights for presence in and use of urban open spaces. despite this, various factors decrease their presence including inappropriate design of space, as well as socio-cultural obstacles. since women’s major place of presence and activity has traditionally been in or near home, neighborhood open sp...

Based on a gender equity perspective and within a pluralistic civil society, women should have equal rights for presence in and use of urban open spaces. Despite this, various factors decrease their presence including inappropriate design of space, as well as socio-cultural obstacles. Since women’s major place of presence and activity has traditionally been in or near home, neighborhood open s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز 1390

abstract:assume that y is a banach space such that r(y ) ? 2, where r(.) is garc?a-falset’s coefficient. and x is a banach space which can be continuously embedded in y . we prove that x can be renormed to satisfy the weak fixed point property (w-fpp). on the other hand, assume that k is a scattered compact topological space such that k(!) = ? ; and c(k) is the space of all real continuous ...

Journal: :Acta Crystallographica Section A Foundations and Advances 2019

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی 1392

دراین تحقیق بعضی از کمپلکس های آهن به وسیله ی واکنش پیریدین 2و6- دی کربوکسیلیک اسید((pydc وآمین های متفاوت سنتز شده اند. تأثیر نسبت مولی مواد اولیه و شرایط واکنش در تشکیل کمپلکس ها مورد بررسی قرار گرفت. واکنش fe(no3)3.9h2o با پیریدین 2و6- دی کربوکسیلیک اسید و 3- آمینو 1 h-1و2و4-تری آزول ((atr با نسبت مولی 2:2:1 منجر به تشکیل کمپلکس جدید آهن با فرمول (1) {(c2h5n4)[fe(pydc)]}.{fe(pydc)(no3)(h2o...

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