نتایج جستجو برای: lower autocentral series
تعداد نتایج: 1020093 فیلتر نتایج به سال:
let $k$ be a field of characteristic$p>0$, $k[[x]]$, the ring of formal power series over $ k$,$k((x))$, the quotient field of $ k[[x]]$, and $ k(x)$ the fieldof rational functions over $k$. we shall give somecharacterizations of an algebraic function $fin k((x))$ over $k$.let $l$ be a field of characteristic zero. the power series $finl[[x]]$ is called differentially algebraic, if it satisfies...
چکیده تحقیق حاضر بر آن است تا وضعیت ارائه لغات را درنمونه ای از کتابهای آموزش زبان انگلیسی در ایران بررسی نماید. به همین منظور، چهار سری از کتابهای عمومی آموزش زبان انگلیسی، (interchange series, top notch series, american english files series, and efl textbooks taught in high and pre-university schools in iran ) که مشتمل بر 28 جلد کتاب در سطوح مختلف می شدند بر مبنای مدل (2001) nationمورد بررسی...
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
Abstract The Arenig Fawr area of North Wales constitutes the type for British Lower to Middle Ordovician Series and is complemented by sections in Carmarthen Whitland areas South Wales. We describe chitinozoan assemblages from both order aid correlation its region with global series stages. Chitinozoans recorded provide permissive rather than conclusive evidence but suggest that Henllan Ash Mem...
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