2015

- Dagstuhl
meeting: Measuring the Complexity of Computational Content
(invited participant), Dagstuhl,
**Germany**(*September*20 - 25)

[talk] Substructural logics, algebras and Weirhrauch degrees

- British
Colloquium of Theoretical Computer Science, London,
**UK**(*June 29 - July 3*)

[talk] A monad for backtracking

- Computability
in Europe, Special session (automata, logic and
infinite games) invited speaker, Bucharest,
**Romania**(*June 29 - July 3*)

[talk] Nash equilibrium and unbounded games

- Conference of
Topology, Algebra, and Categories in Logic (invited
speaker), Ischia Island, Italy
(June 21 - 26)

[talk, haskell] Higher-order game theory - Heyting Day
2015 (invited speaker), Utrecht,
**Netherlands**(February 27)

[talk] On proof interpretations and linear logic - Dagstuhl
meeting: Coalgebraic Semantics of Reflexive Economics
(invited participant), Dagstuhl,
**Germany**(January 18 - 21)

- Mathematical
Logic Oberwolfach meeting, Oberwolfach, Germany (November 16 - 22)

[talk] Recent applications of bar recursion and selection functions

- Southampton ESS
Research Seminar, Southampton,
**UK**(*November 12*)

[talk] Calculating games with higher-order functions

- British
Logic Colloquium (invited speaker), Preston,
**UK**(*September 3-5*)

[talk] Bar recursion: A survey

- Logic Colloquium (PC member), Vienna, Austria (July 14 - 19)
- Logic, Algebra and
Truth Degrees (LATD), Vienna,
**Austria**(*16 - 19 July*)

[talk] On pocrims and hoops - Classical Logic and
Computation (Chair), Vienna,
**Austria**(*July 13*)

- Constructive
Mathematics and Models of Type Theory workshop, Paris,
France (
*June 2 - 6*)

- Algebra
and Coalgebra meet Proof Theory (organiser), Queen
Mary University of London,
**UK**(May 15 - 16)

- Visiting FAU (Bob
Lubarsky), USA
(April 16)

[talk] The logic of the unit interval [0,1]

- 20th Workshop on Logic, Language, Information and Computation (WoLLIC 2013), Darmstadt, Germany (August 20 - 23)
- Logic Colloquium, Evora, Portugal (July 22 - 27)
- 8th Workshop on Games for Logic and Programming Languages (GaLoP 2013), Queen Mary UoL, London, UK (July 18 - 19)
- Combinatorics,
Algebra,
and More, Queen Mary UoL, London, UK (July 8 - 10)

- Visiting Fernando
Ferreira, Lisbon, Portugal
(May 15 - 17)

[talk] Conservation results for the axiom of choice over constructive theories

- Collegium
Logicum
2012:
Structural
Proof
Theory (invited speaker), Paris, France (November 15-16)

[talk] Algorithms from proofs in classical arithmetic and analysis - Florida
Atlantic
University, Algebra and Logic seminar series (seminar
speaker), Boca Raton, USA
(August 31)

[talk] Goedel's dialectica interpretation: Classical logic, arithtmetic and analysis - Classical
Logic
and Computation CL&C 2012 workshop (invited
speaker), Warwick, UK
(July 8)

[talk] Some connections between proof theory and game theory - Turing
100 conference (presentation at poster session),
Manchester, UK (June 22 - 25)

[talk] Computing Nash equilibria of unbounded games

- QMUL
EECS Theory Seminar, London, UK (May 31)

[talk] Games and logic

- Montly CHoCoLa
(Curry-Howard: Logic and Computation) meeting (invited
speaker), Lyon, France
(May 10)

[talk] Some connections between proof theory and game theory

- Visiting Jaime Gaspar and Ulrich Kohlenbach, Darmstadt, Germany (Dec 5 - 6)

[talk] On the restricted form of Spector's bar recursion

- Invited talk, Logic and
Semantics seminar, Cambridge, UK (Nov 25)

[talk] Nash equilibrium, Bekic's lemma and bar recursion

- Mathematical
Logic: Proof Theory, Constructive Mathematics, (pic),
Oberwolfach,
**Germany**(Nov 6 - 12)

[talk] Nash equilibrium, Bekic's lemma and bar recursion

- Visit to LIAMF
group, USP, Brazil (Oct
22)

[talk] Sequential games and optimal strategies

- Computing
with Infinite Data, Dagstuhl, Germany (Oct 9 - 14)

[talk] A finitisation of the infinite Ramsey theorem

- 14th CLMPS
(invited speaker), special session on "Mathematical Logic",
Nancy, France (Jul 19 - 26)

[talk] Goedel's dialectica interpretation: Classical logic, arithtmetic and analysis

- 27th Conference
on Mathematical Foundations of Programming Semantics (MFPS
XXVII) (invited speaker), Pittsburgh, USA (May 25 - 28)

[talk] Programs from classical proofs via Goedel's dialectica interpretation - Federico
Aschieri, PhD defence, Turin, Italy (April 11)

- 10th Wessex
Theory Seminar (speaker), Swansea, UK (April 7)

[talk] The dialectica interpretation of classical logic

- Leeds
Logic Seminar, Leeds, UK (Dec 8)

[talk] The theory of seletion functions

- Swansea
University - Proof, Complexity, Verification Seminar,
Swansea, UK (Nov 23)

[talk] The theory of selection functions

- Loughborough
University - CS Departmental Seminar, Loughborough, UK (Nov 17)

[talk] Sequential games and optimal strategies

- Program
Extraction and Constructive Proofs (PECP), Brno, Czech Republic (Aug 23 - 27)

[talk] Theorems, games, proofs and optimal strategies

- Logic Colloquium 2010
(invited speaker), Paris, France
(Jul 25 - 31)

[talk] Sequential games and optimal strategies

- Computability in
Europe (CiE 2010) (invited speaker), special session
"Proof theory and computation", Azores, Portugal (Jun 30 - Jul 4)

[talk] Bar recursion and the product of selection functions

- ASL 2010 North
American Annual Meeting (contributed talk),
Washington, USA (Mar 17 - 20)

[talk] Instances of bar recursion as products of selection functions - Wessex
Theory Seminar, Southampton, UK (Feb 19)

[talk] Selection functions in proof theory

- Imperial
College LogIC Seminar, London, UK (Nov 26)

[talk] Selection functions and attainable quantifiers

- Gentzen
Centenary workshop (invited speaker), Coimbra, Portugal (Sep 12)

[talk] Spector's bar recursion as an infinite product selection functions

- Computer Science
Logic (plenary speaker), Coimbra, Portugal (Sep 7 - 11)

[talk] Functional interpretations - British Logic
Colloquium (invited speaker) (pic),
Swansea,
UK (Sep 3 - 5)

[talk] Selection functions, bar recursion and Nash equilibrium - Logic and
Mathematics Conference, York, UK (Aug 3 - 7)

- Leeds
Symposium on Proof Theory and Constructivism, Leeds, UK (Jul 3 - 16)

- Realizability
workshop (invited tutorial), Chambery,
**France**(Jun 2 - 5)

[talk] Realizability interpretations of linear logic - Pure
Maths Seminar, Maths dept, QMUL,
**London**(May 18)

[talk] Brief introduction to proof mining

- Domains
IX (contributed talk) Brighton,
**UK**(Sep 22 - 24)

[talk] On variants of modified bar recursion - Colloquium
Logicum, Darmstadt,
**Germany**(Sep 10 - 12)

- Meeting on "Mathematische
Logik" (invited tutorial) (pic),
Oberwolfach,
**Germany**(Apr 7 - 11)

[talk] Dialectica interpretation in the light of linear logic - Visiting GKLI,
Munich, Germany (Jan 21 - 25)

[talk] On variants of modified bar recursion

- Visiting Martin
Escardo, Birmingham,
**UK**(Ago 24 - 27)

[talk] Recent developments in Proof Mining

- European
Logic Colloquium'2007, Wroclaw, Poland (Jul 14
- 19)

- TMCNAA
workshop (invited speaker), Wroclaw, Poland (Jul 15)

[talk] Hoare logic in the abstract

- LICS
- Logic in Computer Science (contributed talk), Wroclaw, Poland (Jul 10 - 14)

[talk] Modified realizability interpretation of classical linear logic

- WoLLIC - Workshop on
Logic, Language, Information and Computation (invited
speaker), Rio de Janeiro, Brazil
(Jul 2 - 5)

[talk] Computational interpretations of classical linear logic

- Trimestre
on methods of proof theory, Max-Planck Institute for
Mathematics, Bonn, Germany
(Jun 2 - 6)

[talk] Functional interpretations and games

- BMC - British Mathematical
Colloquium (invited speaker), special session "Splinter
group in logic", Swansea, UK
(Apr 16 - 19)

[talk] Theorems and symmetric games - Trimestre
on methods of proof theory, Max-Planck Institute for
Mathematics, Bonn, Germany
(Mar 1 - 30)

[talk] A game called Mathematics - MAP
- Mathematics, Algorithms and Proofs, Lorentz Center,
Leiden, Holland (Jan 8 - 12)

[talk] Modified realizability of linear logic

- Invited talk, Logic and Semantics seminar, Cambridge, UK (Oct 6)
- British Logic Colloquium, Oxford, UK (Sept 7 - 9)

- CiE (invited
speaker) (pic),
special
session
on
"Computability
in
analysis"
Swansea,
Wales (Jun 30 - Jul 5)

[talk] Understanding and using Spector's bar recursive interpretation of classical analysis - ASL Annual meeting (invited
speaker), special session on "Effective aspects of measure
theory and analysis" Montreal, Canada
(May 17 - 21)

[talk] Effective WKL conservation in feasible analysis - London Theory Day,
Imperial College (Apr 24)

[talk] Abstract Hoare logic

- Visiting GKLI
(invited tutorial) Munich, Germany
(Mar 28 - 31)

[talk 1, talk 2, talk 3] Functional interpretations

- ACM ICPC Northwestern
regional. Stockholm, Sweden
(Nov 12 - Nov 14)

Coaching a team of students from QM

- Visiting Professor Fernando
Ferreira, Lisbon,
**Portugal**(Oct 18 - Oct 26)

- PCC
workshop (invited speaker), Lisbon,
**Portugal**(Jul 16 - Jul 17)

[talk] Computational interpretations of the contraction axiom

- Workshop
on
applications of proof assistants (invited talk), Venice,
**Italy**( Mar 29 - Apr 1)

[talk] Functional interpretations - Mathematical
Logic: Proof Theory, Type Theory and Constructive Mathematics
(pic),
Oberwolfach,
**Germany**(Mar 20 - Mar 26)

[talk] Unifying functional interpretations - MAP - Mathematics,
Algorithms and Proofs (pic),
Schloss
Dagstuhl,
**Germany**(Jan 9 - Jan 15)

[talk] Unifying functional interpretations

- Visiting Professor Fernando
Ferreira, Lisbon,
**Portugal**(Nov 20 - 27)

[talk] Unifying functional interpretations - The Nature
of Mathematical Proof, Royal Society, London,
**UK**(Oct 18 - 19)

- 2nd Workshop on
the Logic for Pragmatics, Paris,
**France**(Jul 23 - 24)

[talk] On different interpretaions of classical countable choice - 25 Years of CSP,
London,
**UK**(Jul 7 - 8)

- 4th
Conference on Integreted Formal Methods (pic),
Canterbury,
**UK**(Apr 4 - 7)

- MAP
- Mathematics, Algorithms and Proofs (pic),
Marseille,
**France**(Jan 11 - 20)

[talk] Bounded functional interpretation

- LICS'2003
(contributed talk), Ottawa,
**Canada**(Jun 22 - 25)

[talk] Polynomial-time programs from ineffective proofs in feasbile analysis - ASL Annual
meeting 2003 (contributed talk), Chicago,
**USA**(May 29 - Jun 5)

[talk] Polynomial-time programs from ineffective proofs in feasbile analysis - Workshop
on Proof Theory and Algorithms, Edinburgh,
**Scotland**(Mar 23 - 29)

[talk] Polynomial-time programs from ineffective proofs in feasbile analysis

- Trip to Brazil (Dec)

- BRICS
reatreat, Sandbjerg Estate, South of Denmark (Oct 21 - 23)

- FLoC'02 . Copenhagen,
Denmark (Jul 20 - Aug 1)

- BACC'02
(Bounded Arithmetic and Complexity Classes). Lisbon,
**Portugal**(Jun 28 - 29)

[talk] On modified bar recursion - Meeting
on "Mathematische Logik" (pic), Oberwolfach,
**Germany**(Apr 07 - 13)

[talk] Modified bar recursion - Spring School
2002, Semantics of Programming Languages. Agay,
**France**(Mar 23 - 30)

- 2001
- Nov 11 - Nov 16. Dagstuhl
Seminar
CCA'2001 (Computational Complexity in Analysis).
Wadern,
**Germany**.

Talk: On the Computational Complexity of L1-approximation (slides)

- Oct 01 - Feb 01. Visiting Ulrich Berger at University of Swansea,
**Wales**. - Jul - Trip to Brazil.
- Aug 06 - Aug 11. Logic
Colloquium 2001. Vienna, Austria.

Talk: Effective Bounds on Strong Unicity in L1-Approximation (slides) - Jun 25 - Jul 06. EEF Summer
School on Logical Methods. University of Aarhus,
**Denmark**. Organizer: Ulrich Kohlenbach. - May 20 - May 20. ICC'01,
Aarhus, Denmark.

Talk:

- Nov 11 - Nov 16. Dagstuhl
Seminar
CCA'2001 (Computational Complexity in Analysis).
Wadern,
- 2000
- Dec - Trip to Brazil.
- Oct 18 - Oct 20. BRICS reatreat (pic), Sandbjerg Estate, South of Denmark.
- Aug 06 - Aug 18. ESSLLI 2000
(pic).
University
of
Birmingham,
**UK**. Organizers: Achim Jung (chair) and Eike Ritter. - Jul 16 - Aug 05. 2000 Summer
Session -- Computational Complexity Theory. Institute
for Advanced Study, Princeton, NJ,
**USA**.

- 1999
- Dec - Trip to Brazil.
- Oct 18 - 19. BRICS reatreat (pic), Sandbjerg Estate, South of Denmark.
- Jul 30 - Moved to Denmark, (pic). Started my PhD.
- Apr 08 - 12. ACM
World Programming Contest, (pic).
Eindhoven,
**Netherlands**.

- 1998
- Aug 31 - Sep 04 . IFIP Congress (1st
Youth
Summit).
**Austria-Hungary**.

- Aug 31 - Sep 04 . IFIP Congress (1st
Youth
Summit).