let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...

in the first chapter we study the necessary background of structure of commutators of operators and show what the commutator of two operators on a separable hilbert space looks like. in the second chapter we study basic property of jb and jb-algebras, jc and jc-algebras. the purpose of this chapter is to describe derivations of reversible jc-algebras in term of derivations of b (h) which are we...

abstract cooperative learning refers to small groups of learners working together as a team to solve a problem, complete a task, or accomplish a common goal. in a cooperative environment one’s success is directly related to the success of other members because the focus on the individual shifts towards the group. to test the effectiveness of the method, using jigsaw technique, a study was cond...

چکیده پژوهشکده امام خمینی(س) و انقلاب اسلامی مقطع تحصیلی:کارشناسی ارشدچکیده پژوهشکده امام خمینی(س) و انقلاب اسلامی مقطع تحصیلی:کارشناسی ارشد رشته تحصیلی:اندیشه سیاسی در اسلام عنوان پایان نامه:تبیین نظریه حکومت اسلامی امام خمینی بر مبنای الگوی فهم نظریات سیاسی اسپریگنز نام و نام خانوادگی دانشجو:علی مرادی استاد راهنما:دکتر یحیی فوزی استاد مشاور:دکتر منصور انصاری تاریخ شروع پایان نام...