Pełnotekstowe zasoby PLDML oraz innych baz dziedzinowych są już dostępne w nowej Bibliotece Nauki.
Zapraszamy na https://bibliotekanauki.pl
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 6

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available remote

Historic forcing for Depth

100%
Rosłanowski A., Shelah S.
Colloquium Mathematicum
|
2001
|
tom 89
|
nr 1
99-115
EN
We show that, consistently, for some regular cardinals θ <λ, there exists a Boolean algebra 𝔹 such that |𝔹| = λ⁺ and for every subalgebra 𝔹'⊆ 𝔹 of size λ⁺ we have Depth(𝔹') = θ.
2
Content available remote

Forcing for hL and hd

100%
Rosłanowski A., Shelah S.
Colloquium Mathematicum
|
2001
|
tom 88
|
nr 2
273-310
EN
The present paper addresses the problem of attainment of the supremums in various equivalent definitions of the hereditary density hd and hereditary Lindelöf degree hL of Boolean algebras. We partially answer two problems of J. Donald Monk [13, Problems 50, 54], showing consistency of different attainment behaviour and proving that (for the variants considered) this is the best result we can expect.
3
Content available remote

Around cofin

100%
Rosłanowski A., Shelah S.
Colloquium Mathematicum
|
2014
|
tom 134
|
nr 2
211-225
EN
We show the consistency of "there is a nice σ-ideal ℐ on the reals with add(ℐ) = ℵ₁ which cannot be represented as the union of a strictly increasing sequence of length ω₁ of σ-subideals". This answers [Borodulin-Nadzieja and Głąb, Math. Logic Quart. 57 (2011), 582-590, Problem 6.2(ii)].
4
Content available remote

Cardinal invariants of ultraproducts of Boolean algebras

100%
Rosłanowski A., Shelah S.
Fundamenta Mathematicae
|
1998
|
tom 155
|
nr 2
101-151
EN
We deal with some problems posed by Monk [Mo 1], [Mo 3] and related to cardinal invariants of ultraproducts of Boolean algebras. We also introduce and investigate several new cardinal invariants.
5
Content available remote

Examples for Souslin forcing

81%
Judah H., Rosłanowski A., Shelah S.
Fundamenta Mathematicae
|
1994
|
tom 144
|
nr 1
23-42
EN
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.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

On game ideals

50%
Rosłanowski A.
Colloquium Mathematicum
|
1990
|
tom 59
|
nr 2
159-168
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.