نتایج جستجو برای: unit regular

تعداد نتایج: 509474  

2008
Samuel R. Buss Jan Hoffmann Jan Johannsen

Resolution refinements called weak resolution trees with lemmas (WRTL) and with input lemmas (WRTI) are introduced. Dag-like resolution is equivalent to both WRTL and WRTI when there is no regularity condition. For regular proofs, an exponential separation between regular dag-like resolution and both regular WRTL and regular WRTI is given. It is proved that DLL proof search algorithms that use ...

اخوان, رضا, مهدوی, علی, کرمی, طاهر,

In order to evaluate the impacts of oleo-gum resin extraction periodicity on natural regeneration of wild pistachio (Pistacia atlantica subsp. kurdica), three different forest areas in Kurdistan province, west of Iran, were selected based on difference extraction periodicities (regular periodicity, irregular periodicity and without periodicity). Then homogenous unit maps in GIS produced, and on...

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: :Časopis pro pěstování matematiky a fysiky 1937

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