Conferences and thematic workshops:

Workshop on Banach spaces and Banach lattices,
Madrid, Spain, 9–13th May 2022
Invited talk: TBA

49th Winter School in Abstract Analysis,
Sněžné, Czech Republic, 12–19th January 2022
Talk: (λ+)-injective Banach spaces

48th Winter School in Abstract Analysis,
Svratka, Czech Republic, 11–18th January 2020
Talk: Isomorphic Kottman constant of a Banach space

Analysis Seminar Innsbruck,
Innsbruck, Austria, 15–17th November2019
Talk: Tsirelson and Schreier spaces, and their operators.

Workshop on Banach spaces and Banach lattices,
Madrid, Spain, 9–13th September 2019
Talk slides: An update on the classification program of (maximal) ideals of algebras of operators on Banach spaces: the cases of Tsirelson and Schreier spaces.

Jubilee Congress for the 100th anniversary of the Polish Mathematical Society,
Kraków, Poland, 3–7th September 2019
Talk: When are algebras of operators on Banach spaces Grothendieck spaces? (in Polish)

Preserver Weekend in Szeged,
Bolyai Institute, University of Szeged, Szeged, Hungary, 12–14th April 2019
Talk slides: Yet another preserver of (local) compactness–maps respecting the compatibility ordering

Some pictures from the Preserver Weekend

47th Winter School in Abstract Analysis,
Svratka, Czech Republic, 12–19th January 2019
Talk slides: Grothendieck spaces, operators, and beyond.

Function Spaces XII,
Kraków, Poland, 9–14th July 2018
Talk slides: On the problem of openness of convolutions on discrete groups.

Geometrical Aspects of Banach Spaces,
Birmingham, 25–29th June 2018
Talk slides: (1+)-separation in the unit sphere of a Banach space.

Young Mathematicians in C*-Algebras,
Copenhagen, Denmark, 7–11th August 2017

Geometric Measure Theory,
University of Warwick, 10–14th July 2017
Co-organiser.

Geometric Topology and Geometry of Banach Spaces,
Eilat Campus of Ben-Gurion University of the Negev, Israel, 14–19th May 2017
Talk slides: Separated subsets of the unit sphere of a Banach space.

45th Winter School in Abstract Analysis,
Svratka, Czech Republic, 14–21st January 2017
Talk: Recovering a compact space from the family of its continuous, scalar-valued functions: the old and the new.

Virginia Operator Theory and Complex Analysis Meeting,
University of Richmond, United States, 8th October 2016
Invited talk: Recovering a compact space from the family of its continuous, scalar-valued functions: the old and the new.

Some pictures from VOTCAM

Young Mathematicians in C*-Algebras,
Münster, Germany, 25–29th July 2016
Talk: Compatibility morphisms between commutative C*-algebras

Transfinite methods in Banach spaces and algebras of operators,
Będlewo, Poland, 17th–23rd July 2016
Talk slides: Closed ideals of operators on and complemented subspaces of Banach spaces of functions with countable support.

The Stone–Cech Compactification: Theory and Applications,
Centre for Mathematical Sciences, University of Cambridge, 6–8th July 2016

The mathematical legacy of Uffe Haagerup,
Copenhagen, Denmark, 24–26th June 2016

44th Winter School in Abstract Analysis,
Svratka, Czech Republic, 16–23rd January 2016
Talk: Ideal structure of the algebra of bounded operators acting on a Banach space.

Young Mathematicians in C*-Algebras,
University of Copenhagen, Denmark, 17–21th August 2015
Talk slides: On C*–algebras that do not decompose into tensor products.

QOP Meeting: Quantum Probability, Groups and Geometry,
IMPAN, Warszawa, 7–11th April 2015

Heidelberg Laureate Forum: Abel-, Fields- and Turing-Laureates Meet the Next Generation,
Heidelberg, Germany, 21st–26th September 2014
Workshop organised: Independence results in Mathematics

Workshop on Ordered Banach Algebras,
Lorentz Centre, Leiden, The Netherlands, 21st–25th June 2014.

Workshop on Applications of model theory to C*-algebras,
Münster, Germany, 7–11th July 2014.

Integration, Vector Measures and Related Topics,
Będlewo, Poland, 15th–21st June 2014.
Talk: Which algebras of operators on Banach spaces are Grothendieck?

Young Functional Analysts' Workshop 2014,
Lancaster University, 22nd–24th April 2014,
Talk: Universality problems in operator algebras from the perspective of back–and–forth methods in model theory

Heidelberg Laureate Forum: Abel-, Fields- and Turing-Laureates Meet the Next Generation,
Heidelberg, Germany, 22nd–27th September 2013

Classifying Structures for Operator Algebras and Dynamical Systems,
Aberystwyth, 16–20th September 2013

School and workshop: Topics in Operator Algebras and Applications, Madrid, Spain, 2nd–6th September 2013

Banach algebras and applications,
Gothenburg, Sweden, 29th July – 4th August 2013
Talk slides: Maximal left ideals of operators acting on a Banach space

QOP Meeting: C*–algebras and Banach algebras,
Warsaw, Poland, 8–12th July 2013

QOP Meeting: Banach and operator spaces,
Lancaster, 29–30th April 2013
Invited talk: Operators from C(K)–spaces which annihilate certain chains of functions

Young Functional Analysts' Workshop 2013, University of Sheffield, 20th–22nd March 2013
Talk: Which algebras of operators on Banach spaces are Grothendieck spaces?

Thematic Program on Forcing and its Applications: Workshop on Applications to Operator Algebras,
Fields Institute, Toronto, Canada, 10–14th September 2012

Appalachian Set Theory Workshop,
Fields Institute, Toronto, Canada, 8–9th September 2012

Geometry of Banach spaces,
Centre International de Rencontres Mathématiques, Luminy, Marseille, France, 27th–31st August 2012

Trends in set theory,
Warsaw, Poland, 8–11th July 2012
Talk abstract: Operator ideal of weakly compactly generated operators

Banach Spaces Workshop,
Birmingham, 6–9th June 2012

Young Functional Analysts' Workshop 2012,
University of Oxford, 21st–22nd March 2012
Talk slides: Closed ideals of the Banach algebra of bounded operators on the Banach space C[0,ω1]

Banach Algebras 2011,
Waterloo, Ontario, Canada, 3–10th August 2011.
Talk slides: Uniqueness of the maximal ideal of the Banach algebra of bounded operators on C([0, ω1])

Operator Theory and its Applications in honour of Victor Shulman,
Gothenburg, Sweden, 26–29th April 2011

Set–theoretic Techniques in Functional Analysis Banach Space Meeting 2011,
Castro Urdiales, Cantabria, Spain, 21st–24th February 2011

Invited seminar talks:

February 15, 2021, Functional Analysis Seminar, Adam Mickiewicz Unieversity in Poznań, Poland.
Talk: Stopping time spaces and their operators

December 6, 2021, Functional Equations of Several Variables Seminar, University of Silesia, Katowice, Poland.
Talk: Large cardinal numbers and automatic continuity of the solutions to the Cauchy equation: functionals associated to filter bases

January 21, 2021, Functional Analysis Seminar, Adam Mickiewicz Unieversity in Poznań, Poland.
Talk: Large cardinal numbers vs continuity of coordinate functionals of filter bases in Banach spaces

November 16, 2020, Real Analysis Seminar, Technical University of Łódź, Poland.
Talk: Geometry of the spehere of a normed space

June 9, 2020, Functional Analysis Seminar, Jagiellonian University in Kraków, Poland.
Talk: Large cardinals and continuity of coordinate functionals of filter bases in Banach spaces

May 24, 2020, Portsea Maths Research Webinar University of Portsmouth.
Talk: Estimating Kalton's constant: from twisted sums of Banach spaces to fine-tuning algorithms

April 24, 2020, Banach spaces webinar, University of North Texas
Talk video: Quantifying Kottman's constant

November 29, 2019, Geometry of Banach spaces Seminar, Jagiellonian University in Kraków, Poland.
Talk: Some remarks on the isomorphic Kottman constant of a Banach space

October 16, 2019, Výjezdní zasedání Matematického ústavu AV ČR, Čejkovice, Czech Republic.
Talk slides: Separation in the sphere: state of the art

May 18, 2019, Colloqium, Jagiellonian University in Kraków, Poland.
Talk: Banach spaces and surjective images of their algebras of operators

December 12, 2018, Seminar on Geometry of Banach spaces, Jagiellonian University in Kraków, Poland.
Talk: On separated subsets of the sphere of a Banach space once more

October 16, 2018, Abstract Analysis Seminar, Czech Academy of Sciences, Prague, Czech Republic.
Talk: An update on the problem of openness of multiplication in a Banach algebra

June 14, 2018, University of Extremadura, Badajoz, Spain.
Talk: Separated sets and Auerbach systems in Banach spaces

April 10, 2018, Adam Mickiewicz Unieversity in Poznań, Poland
Talk: Some new results on separated subsets of the unit sphere of a Banach space

March 1, 2018, University of Kielce, Poland
Talk: When is multiplication in a Banach algebra open?

February 27, 2018, Technical University of Łódź, Poland
Talk: When is multiplication in a Banach algebra open?

January 30, 2018, Operator algebras seminar, University of Münster, Germany.
Talk: When is multiplication in a Banach algebra open?

March 21, 2017, Technical University of Łódź, Poland
Talk: Steinhaus' lattice-point problem for Banach spaces

January 26, 2017, Applied Mathematics Seminar, University of Portsmouth.
Talk: Recovering a compact space from the family of its continuous, scalar-valued functions: the old and the new.

January 4, 2017, ATH, Bielsko-Biała, Poland.
Talk: Steinhaus' lattice-point problem for Banach spaces

December 19, 2016, Sardar Patel University, Vallabh Vidhyanagar, Anand, India.
Talk: Recovering a compact space from the family of its continuous, scalar-valued functions: the old and the new.

December 14, 2016, University of Delhi, India.
Talk: Recovering a compact space from the family of its continuous, scalar-valued functions: the old and the new.

October 21, 2016, Set Theory & Analysis Seminar, Czech Academy of Sciences, Prague, Czech Republic.
Talk: Steinhaus' lattice-point problem for Banach spaces

October 5, 2016, Washington and Lee University, Lexington, Virginia, United States.
Talk: Steinhaus' lattice-point problem for Banach spaces

October 4, 2016, University of Virginia, Charlottesville, Virginia, United States.
Talk: Separated subsets in the unit sphere of a Banach space

June 14, 2016, Set Theory & Analysis Seminar, Czech Academy of Sciences, Prague, Czech Republic.
Talk: Recovering a compact Hausdorff space X from the compatibility ordering on C(X)
April 6, 2016, Seminar on Geometry of Banach spaces, Jagiellonian University in Kraków, Poland.
Talk: Separated subsets in the unit sphere of a Banach space

April 5, 2016, Functional Analysis Seminar, Adam Mickiewicz University in Poznań, Poland.
Talk: Variations of the Steinhaus' lattice–point problem in Banach spaces

April 4, 2016, Real Analysis Seminar, University of Silesia, Katowice, Poland.
Talk: Decomposing the Calkin algebra into tensor products of C*–algebras

January 27, 2016, ATH, Bielsko-Biała, Poland.
Talk: Two études about the matrix trace

January 13, 2016, Seminar on Geometry of Banach spaces, Jagiellonian University in Kraków, Poland.
Talk: Ideal structure of the algebra of bounded operators acting on a Banach space

January 13, 2016, Seminar on Methods of Approximation Theory, Jagiellonian University in Kraków, Poland.
Talk: Steinhaus' lattice–point problem for Banach spaces

January 12, 2016, Seminar on Functional Analysis, Jagiellonian University in Kraków, Poland.
Talk: Tensorial decompositions of the Calkin algebra and related objects

September 29, 2015, University College Cork, Cork, Ireland.
Talk: The Calkin algebra does not decompose into a tensor product of two infinite–dimensional C*–algebras

June 10, 2014, Functional Analysis Seminar, Adam Mickiewicz University in Poznań, Poland.
Talk: Maximal left ideals of the algebra of bounded operators on a Banach space

January 23, 2014, Descriptive set theory seminar, University of Copenhagen.
Talk: Maximal left ideal structure of algebras of operators on Banach spaces

November 11, 2013, University of Oxford, Mathematical Institute.
Talk: Maximal left ideals of operators acting on a Banach space

July 4, 2013, Analysis Group Seminar, University of Glasgow.
Talk: Which algebras of operators on Banach spaces are Grothendieck?

January 16, 2012, Real Analysis Seminar, University of Silesia, Katowice, Poland.
Talk: Maksymalne ideały lewostronne w algebrach Banacha (eng. Maximal left–ideals in Banach algebras)

January 12, 2012, Working Group in Applications of Set Theory, IMPAN, Warsaw, Poland.
Talk: On classical operator ideals and the structure of the operator algebra on C([0,ω1]). Pt. II.

January 10, 2012, Functional Analysis Seminar, IMPAN, Warsaw, Poland.
Talk: Operatory i miary wektorowe o obrazie zawartym w przestrzeni Banacha generowanej przez zbiór słabo zwarty (eng. Operator and vectors measures with range lying in a WCG Banach space)

January 5, 2012, Working Group in Applications of Set Theory, IMPAN, Warsaw, Poland.
Talk: On classical operator ideals and the structure of the operator algebra on C([0,ω1]). Pt. I.

April 18, 2011, Real Analysis Seminar, Technical University of Łódź, Poland
Talk: Domknięte ideały w algebrach operatorów ograniczonych na przestrzeniach typu C(K) (eng. Closed ideals in the algebras of bounded operators on C(K)–spaces)


Lancaster Pure Mathematics Postgraduate Forum talks:

May 25, 2015 How many norm-one continuous functions with distance greater than 1 are there?
January 19, 2015 Linear algebra from analyst's point of view
November 4, 2013 The Johnson–Lindenstrauss space
October 31, 2013 Killing uncountable chains of continuous functions
February 5, 2013 Around Pełczyński's decomposition method.
March 8, 2011 Beyond ZFC: Beauty of Jensen's Diamond Principle
January 9, 2011 Some Remarks on the Stone–Čech Compactification

Other events:

Stochastic Analysis and Stochastic PDEs, Warwick University, 16–20th April 2012

EPSRC Symposium Workshop – 2012 UK Easter Probability Meeting, Warwick University, 26–30th March 2012

North British Functional Analysis Seminar, University of Edinburgh, 28th October 2011.

Analytical and Computer Assisted Methods in Mathematical Models, Bydgoszcz, Poland, 4–18th September 2011

14th International Workshop for Young Mathematicians "Algebra", Kraków, Poland, 10–16th July 2011
Talk slides: Radical–theoretic approach to ring theory

LMS–EPSRC Short Course 2011, Mathematical Institute, University of Oxford, 3rd–8th April 2011

6th International Students’ Conference on Analysis,
Síkfőkút, Noszvaj, Hungary, 31st January–3rd February 2010.

4th International Students’ Conference on Analysis,
Zamárdi, Hungary, 2nd–6th February 2008
Talk: A Remark on homomorphisms on C(X)