Ideals and commutativity in βN
نویسندگان
چکیده
منابع مشابه
injective modules and prime ideals
محور اصلی این پایان نامه، r- مدولهای a – انژکتیو می باشد که آنها را به عنوان یک تعمیم از مدول های انژکتیو معرفی می کنیم. در ابتدا مدول های انژکتیو را معرفی کرده، سپس برخی نتایج مهم وشناخته شده مدول های انژکتیو را به مدول های a – انژکتیو تعمیم می دهیم. در ادامه رابطه بین مدول های a – انژکتیو و حلقه های نوتری را بررسی می کنیم. پس هدف کلی این پایان نامه این است که با بررسی انژکتیو بودن ایده آله...
15 صفحه اولContinuous Homomorphisms on βN and Ramsey Theory
We consider the question of the existence of a nontrivial continuous homomorphism from (βN,+) into N∗ = βN\N. This problem is known to be equivalent to the existence of distinct p and q in N∗ satisfying the equations p+ p = q = q + q = q + p = p+ q. We obtain certain restrictions on possible values of p and q in these equations and show that the existence of such p and q implies the existence o...
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ژورنال
عنوان ژورنال: Topology and its Applications
سال: 1994
ISSN: 0166-8641
DOI: 10.1016/0166-8641(94)00019-0