Infinite Combinatorics

prof. dr hab. Ryszard Frankiewicz (IM PAN), prof. dr hab. Bogdan Węglorz (UKSW), dr Joanna Jureczko (PWr)

Wednesday 9.00-10.30, room 106  

2017-11-21 at 15:15 in room C4-245 (Wrocław University of Science and Technology)

Sławomir Szczepaniak (Wrocław University of Science and Technology)

"Transfinite bases in Banach spaces"

Abstract:

We discuss some analytical and set-theoretic aspects of the existence of long basic sequences in non-separable Banach spaces.

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2017-11-14, at 15:15 in room C4-245 (Wrocław University of Science and Technology)

Sławomir Szczepaniak (Wrocław University of Science and Technology)

"Dugundji Theorem for metrizable and non-metrizable spaces continuation"

Abstract:

We discuss some variations of the Dugundji Theorem.

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2017-11-07, at 15:15 in room C4-245 (Wrocław University of Science and Technology)

Sławomir Szczepaniak (Wrocław University of Science and Technology)

"Dugundji Theorem for metrizable and non-metrizable spaces"

Abstract:

We discuss some variations of the Dugundji Theorem.

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2017-04-25, at 17:30 in room 403

Bogdan Węglorz (Cardinal Stefan Wyszyński University in Warsaw)

"Some aspects of forcing - cont

Abstract

There will be presented some aspects of forcing.

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2017-03-28, at 17:30 in room 403

Bogdan Węglorz (Cardinal Stefan Wyszyński University in Warsaw)

"Some aspects of forcing

Abstract

There will be presented some aspects of forcing.

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2017-03-21, at 17:30 in room 403

Bogdan Węglorz (Cardinal Stefan Wyszyński University in Warsaw)

"Models of Set Theory

Abstract

There will be presented examples of models of set theory.

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2017-03-14, at 17:00 in room 403

Tomasz Weiss (Cardinal Stefan Wyszyński University in Warsaw)

"The proof of add(M ∩ N, N) = add(M)

Abstract

We prove that add(M ∩ N, N) = add(M) using ZFC only.

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2017-02-28, at 18:30 in room 403

Tomasz Weiss (Cardinal Stefan Wyszyński University in Warsaw)

"On the additivity and cofinality of the intersection ideal M ∩ N" - continuation

Abstract

We prove that the additivity of the intersection ideal M ∩ N is equal to the additivity of the ideal N of null sets in the Cantor space 2w . We show that a similar result holds also for the cofinality number of the above ideals.

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2017-02-21, at 18:30 in room 403

Tomasz Weiss (Cardinal Stefan Wyszyński University in Warsaw)

"On the additivity and cofinality of the intersection ideal M ∩ N" - continuation

Abstract

We prove that the additivity of the intersection ideal M ∩ N is equal to the additivity of the ideal N of null sets in the Cantor space 2w . We show that a similar result holds also for the cofinality number of the above ideals.

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2017-01-24, at 18:30 in room 403

Tomasz Weiss (Cardinal Stefan Wyszyński University in Warsaw)

"On the additivity and cofinality of the intersection ideal M ∩ N" - continuation

Abstract

We prove that the additivity of the intersection ideal M ∩ N is equal to the additivity of the ideal N of null sets in the Cantor space 2w . We show that a similar result holds also for the cofinality number of the above ideals.

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2017-01-11, at 9:30 in room 106

Tomasz Weiss (Cardinal Stefan Wyszyński University in Warsaw)

"On the additivity and cofinality of the intersection ideal M ∩ N

Abstract

We prove that the additivity of the intersection ideal M ∩ N is equal to the additivity of the ideal N of null sets in the Cantor space 2w . We show that a similar result holds also for the cofinality number of the above ideals.

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2016-12-14, at 9:30 in room 106

Joanna Jureczko (Cardinal Stefan Wyszyński University in Warsaw)

"On Kuratowski partitions"-continuation

Abstract

It will be presented problems concerning the existence of Kuratowski partitions..

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2016-12-07, at 9:30 in room 106

Joanna Jureczko (Cardinal Stefan Wyszyński University in Warsaw)

"On Kuratowski partitions"

Abstract

It will be presented problems concerning the existence of Kuratowski partitions.

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2016-11-30, at 9:30 in room 106

Ryszard Frankiewicz (Institute of Mathematics of Polish Academy of Sciences)

"On asymptotic density"

Abstract

It will be presensted some problems concerning asymptotic density.

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2016-11-23, at 9:30 in room 106

Joanna Jureczko (Cardinal Stefan Wyszyński University in Warsaw)

"Kuratowski partitions on the structure of Ellentuck topology" - continuation

Abstract

It will be presented the existence of Kuratowski partitions in some structures, especially Ellentuck topology.

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2016-11-16, at 9:30 in room 106

Joanna Jureczko (Cardinal Stefan Wyszyński University in Warsaw)

"Kuratowski partitions on the structure of Ellentuck topology" - continuation

Abstract

It will be presented the existence of Kuratowski partitions in some structures, especially Ellentuck topology.

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2016-11-09, at 9:30 in room 106

Joanna Jureczko (Cardinal Stefan Wyszyński University in Warsaw)

"Kuratowski partitions on the structure of Ellentuck topology"

Abstract

It will be presented the existence of Kuratowski partitions in some structures, especially Ellentuck topology.

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