Zobrazeno 1 - 10
of 1 191
pro vyhledávání: '"Saharon Shelah"'
Autor:
Wilfrid Hodges, Saharon Shelah
Publikováno v:
Cubo, Vol 21, Iss 3, Pp 9-27 (2019)
We regard an algebraic construction as a set-theoretically defined map taking structures A to structures B which have A as a distinguished part, in such a way that any isomorphism from A to A' lifts to an isomorphism from B to B'. In general the cons
Externí odkaz:
https://doaj.org/article/3d9f098733d04154ad8d9972dad2d37c
Autor:
Saharon Shelah
Publikováno v:
Axioms, Vol 10, Iss 4, p 329 (2021)
We prove some results in set theory as applied to general topology and model theory. In particular, we study ℵ1-collectionwise Hausdorff, Chang Conjecture for logics with Malitz-Magidor quantifiers and monadic logic of the real line by odd/even Can
Externí odkaz:
https://doaj.org/article/2b1c08c8aec8495f8e1884b5d8f054f1
Autor:
Saharon Shelah
Publikováno v:
Cubo, Vol 13, Iss 2, Pp 59-72 (2011)
Let C Reg be a non-empty class (of regular cardinals). Then the logic has additional nice properties: it has the homogeneous model existence property.Sea C Reg una clase no vacía (de cardinales regulares). Entonces la lógica tiene propiedades adici
Externí odkaz:
https://doaj.org/article/384a080457664848ae155cd56aa26244
Autor:
Gianluca Paolini, Saharon Shelah
Publikováno v:
Axioms, Vol 6, Iss 2, p 13 (2017)
We prove that if G is a Polish group and A a group admitting a system of generators whose associated length function satisfies: (i) if 0 < k < ω , then l g ( x ) ≤ l g ( x k ) ; (ii) if l g ( y ) < k < ω and x k = y , then x = e , then there exis
Externí odkaz:
https://doaj.org/article/e107f3cb66564d80b6c0e4cd9c8a9b99
Autor:
PHILIPP LÜCKE, SAHARON SHELAH
Publikováno v:
Forum of Mathematics, Sigma, Vol 2 (2014)
Given a cardinal $\lambda $ with $\lambda =\lambda ^{\aleph _0}$ , we show that there is a field of cardinality $\lambda $ whose automorphism group is a free group of rank $2^\lambda $ . In the proof of this statement, we develop general techniqu
Externí odkaz:
https://doaj.org/article/e000cd18aab14574a33ee35cb3c25a90
Autor:
Andrzej Rosłanowski, Saharon Shelah
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 28, Iss 2, Pp 63-82 (2001)
We look for a parallel to the notion of proper forcing among λ-complete forcing notions not collapsing λ+. We suggest such a definition and prove that it is preserved by suitable iterations.
Externí odkaz:
https://doaj.org/article/1c75fa8df7bc4b579f8769f44fe08762
Autor:
Saharon Shelah
Since their inception, the Perspectives in Logic and Lecture Notes in Logic series have published seminal works by leading logicians. Many of the original books in the series have been unavailable for years, but they are now in print once again. This
Autor:
Saharon Shelah, Mohammad Golshani
Publikováno v:
Fundamenta Mathematicae. 260:59-66
Publikováno v:
Proceedings of the American Mathematical Society. 151:1301-1309
We force the existence of a non-trivial κ \kappa -complete ultrafilter over κ \kappa which fails to satisfy the Galvin property. This answers a question asked by Benhamou and Gitik [Ann. Pure Appl. Logic 173 (2022), Paper No. 103107].
Autor:
Saharon Shelah
Publikováno v:
Mathematical Logic Quarterly.