منابع مشابه
Problems for Problem Session
is its closed normal subgroup, [Sh], [Ka]. The group Aut∗k k [n] is an infinite dimensional simple algebraic group, [Sh]. If D is a locally nilpotent k-derivation of k, then it is easily seen that exp tD ∈ Aut∗k k [n] for any t ∈ k, so D lies in Lie(Aut∗k k ). It follows from [BB1], [BB2] that n − 1 is the maximum of dimensions of algebraic tori contained in Aut∗k k , and that every algebraic t...
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Research in Information Retrieval has traditionally focused on serving the best results for a single query, e.g. the most relevant results, a single most relevant result, or a facet-spanning set of results. In practice, no matter the task, users often enter a sufficiently ill-specified query that one or more reformulations are needed in order to locate a sufficient number of what they seek. Ear...
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ژورنال
عنوان ژورنال: European Journal of Combinatorics
سال: 1994
ISSN: 0195-6698
DOI: 10.1006/eujc.1994.1013