360,051 research outputs found
Polynomials with prescribed bad primes
We tabulate polynomials in Z[t] with a given factorization partition, bad
reduction entirely within a given set of primes, and satisfying auxiliary
conditions associated to 0, 1, and infinity. We explain how these sets of
polynomials are of particular interest because of their role in the
construction of nonsolvable number fields of arbitrarily large degree and
bounded ramification. Finally we discuss the similar but technically more
complicated tabulation problem corresponding to removing the auxiliary
conditions.Comment: 26 pages, 3 figure
New World Limnichinae IV. \u3ci\u3eEulimnichus\u3c/i\u3e Casey. B. Descriptions of New Species (Coleoptera: Limnichidae)
Thirteen new species of Eulimnichus are described: Eulimnichus visendus, corrinae, langleyae, coheni, improcerus, pellucidus, sharpi, incultus, rugulosus, nrsticus, acutus, subitus, and spangleri. A key to the 27 known species is included
Circular 50
In 1981 a survey was conducted to determine the kinds and amounts of
pesticides used in the production of potatoes and small grains in Alaska as
well as the manner in which they were used. Alaska has been asked by the
United States Department of Agriculture to cooperate with the other states
in a pesticide impact assessment program designed to aid the Environmental
Protection Agency in predicting the consequences of its actions. This study
was initaited to determine the importance of pesticides to the production of
these crops. This compilation is not intended to present recommendations for pest
management stuations in Alaska, and it should not be used as a pest-control
guide. It simply reports surveyed information and should be used only as a
reference to pesticide usage in 1981. Some general information is provided
on the classification and application of each pesticide
New Michigan State Record for a Sphecine Wasp, \u3ci\u3ePodium Rufipes\u3c/i\u3e (Hymenoptera: Sphecidae)
Podium rufipes, previously unrecorded from Michigan, has been found occupy- ing trap nests in the southwestern lower peninsula
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