Ideal class groups of cyclotomic number fields I
Franz Lemmermeyer (1995)
Acta Arithmetica
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Franz Lemmermeyer (1995)
Acta Arithmetica
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Haim Judah, Andrzej Rosłanowski, Saharon Shelah (1994)
Fundamenta Mathematicae
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We give several examples of Souslin forcing notions. For instance, we show that there exists a proper analytical forcing notion without ccc and with no perfect set of incompatible elements, we give an example of a Souslin ccc partial order without the Knaster property, and an example of a totally nonhomogeneous Souslin forcing notion.
Jukka Pihko (1993)
Acta Arithmetica
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Rüdiger Göbel, Simone Pabst (1998)
Fundamenta Mathematicae
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The paper deals with realizations of R-algebras A as endomorphism algebras End G ≅ A of suitable R-modules G over a commutative ring R. We are mainly interested in the case of R having "many prime ideals", such as R = ℝ[x], the ring of real polynomials, or R a non-discrete valuation domain
Karen Brucks, Henk Bruin (1999)
Fundamenta Mathematicae
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We discuss the inverse limit spaces of unimodal interval maps as topological spaces. Based on the combinatorial properties of the unimodal maps, properties of the subcontinua of the inverse limit spaces are studied. Among other results, we give combinatorial conditions for an inverse limit space to have only arc+ray subcontinua as proper (non-trivial) subcontinua. Also, maps are constructed whose inverse limit spaces have the inverse limit spaces of a prescribed set of periodic unimodal...
Julien Cassaigne, Sébastien Ferenczi, Christian Mauduit, Jöel Rivat, András Sárközy (1999)
Acta Arithmetica
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James McKee (2000)
Acta Arithmetica
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Norihiko Minami (1998)
Fundamenta Mathematicae
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