نتایج جستجو برای: Fourier
تعداد نتایج: 61536 فیلتر نتایج به سال:
we commence by using from a new norm on l1(g) the -algebra of all integrable functions on locally compact group g, to make the c-algebra c(g). consequently, we find its dual b(g), which is a banach algebra so-called fourier-stieltjes algebra, in the set of all continuous functions on g. we consider most of important basic theorems about this algebra. this consideration leads to a rather com...
By observing the equivalence of assertions on determining the jump of a function by its differentiated or integrated Fourier series, we generalize a previous result of Kvernadze, Hagstrom and Shapiro to the whole class of functions of harmonic bounded variation. This is achieved without the finiteness assumption on the number of discontinuities. Two results on determination of ...
در این پژوهش نحوه ساخت نانوکامپوزییت eva/ag و اثر ضد میکروبی آن در درصدهای مختلف نانو ذره نقره مورد بررسی قرار گرفته است.نانوکامپوزیت حاصل از نطر شکل شناختی ، اندازه ذرات، ساختمان شیمیایی ، با استفاده از تستهای sem(scanning electrou microscopy)،tem (transmission electron microscope) ، xrd (x-ray fluorescence spectroscopy) ،ftir (fourier transform infrared spectroscopy) مورد ارزیابی قرار گرفت. د...
in this paper, we investigate the relation between l-projections and conditional expectations on subalgebras of the fourier-stieltjes algebra b(g), and we will show that compactness of g plays an important role in this relation.
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