نتایج جستجو برای: regular space

تعداد نتایج: 606501  

Journal: :Transactions of the American Mathematical Society 1975

Journal: :journal of linear and topological algebra (jlta) 0
sh sahebi department of mathematics, faculty of science, islamic azad university, central tehran branch, po. code 14168-94351, tehran, iran m azadi department of mathematics, faculty of science, islamic azad university, central tehran branch, po. code 14168-94351, tehran, iran

r is called commuting regular ring (resp. semigroup) if for each x,y $in$ r thereexists a $in$ r such that xy = yxayx. in this paper, we introduce the concept of commuting$pi$-regular rings (resp. semigroups) and study various properties of them.

Journal: :Topology and its Applications 1999

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Perception is a cognitive process depends on various factors of the environment. The user's mentality can affect his perception, understanding, and behavior in the environment. Organizing the environment is one of the important factors in the formation of spatial communication of elements that can be an important factor in understanding the person from his or her surroundings. In this research,...

Journal: :Časopis pro pěstování matematiky a fysiky 1948

Journal: :Journal of Mathematical Analysis and Applications 2006

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