Talks & [slides]: 
 
 
         (an incomplete list)
 Talks in international conferences, seminars and workshops:
  -  Distances between formal theories
 Logic, categories and philosophy of mathematics
 Budapest, Hungary, 20-21 June 2019, Rényi Institute. [slides: pdf]
  
  - 
Conceptual Structure of Spacetimes, and Category of concept
Algebras
 Foundations of Categorical Philosophy of Science
 München Germany, 26-27 April 2019, Ludwig-Maximilians-Universität. [slides]
  
- 
Frames and coordinate systems in the formalization of Einstein's special principle of relativity
 Logic Colloquium 2018
 Udine, Italy, July 23-28, 2018, University of Udine. [slides: pdf]
  
- 
  Comparing Classical And Relativistic Kinematics In First-Order Logic
 UniLog 2018: 6th World Congress and School on Universal Logic
 Vichy, France, June 16-26, 2018, University of Vichy. "Logic & Physics" session, June 23rd [slides: pdf] "Tools & Results" session, June 25th [slides: pdf]
- 
  Should the principle of relativity speak only about reference frames instead of coordinate systems?
 Logic, Relativity and Beyond 3rd conference
 2017 August 23-27, Budapest,  Rényi Institute. [abstract: html slides: pdf]
- 
Comparing classical mechanics and relativity theories in first order logic
 Logic, Relativity and Beyond 3rd conference
 2017 August 23-27, Budapest,  Rényi Institute. [abstract:  html slides:  pdf]
- 
  Some ideas on resolving causal paradoxes of time travel
 Logic, Relativity and Beyond 3rd conference, 2017 August 23-27, Budapest,  Rényi Institute. [abstract: html slides: pdf]
- 
Tutorial on Logic and the Theory of Relativity
 5th World Congress and School on Universal Logic
 June 20 - 24 2015, University of Istanbul
- 
  What structures can numbers have in relativity theory?
 Logic, Relativity and Beyond (2nd international conference)
 August 9-13 2015, Budapest,  MTA Rényi Institute [abstract:  html slides: pdf]
- 
Interpretation of Special Relativity in the Language of Newtonian Kinematics
 Logic, Relativity and Beyond (2nd international conference)
 August 9-13 2015, Budapest,  MTA Rényi Institute  [abstract: html slides: pdf]
- 
A completeness theorem for general relativity
 Logic, Relativity and Beyond (2nd international conference)
 August 9-13 2015, Budapest,  MTA Rényi Institute  [abstract: html slides: pdf]
- Axiomatizing Minkowski Spacetime in First-Order Temporal Logic
 2nd workshop of The Budapest-Krakow Research Group
 December 8, 2014, Krakow
- Interpretation of Special Relativity in the Language of Newtonian Kinematics
 Center for Logic and Philosophy of Science -- Vrije Universiteit Brussel, September 24, 2014, Brussel. 
 [slides: pdf]
- A completeness theorem for general relativity
 Logic Colloquium 2014
 14th - 19th July, Vienna University of Technology
- Modal logic of clocks (Modalizing a first-order theory of time to get a better understanding of relativity theories)
 Logic Colloquium 2014
 14th - 19th July, Vienna University of Technology
- Operationality in the Axiomatic Foundations of Relativity Theory
 Foundations of Physics
 29 to 31 July, 2013, München
- Tutorial on logical analysis of relativity theories
 First International Conference on Logic and
Relativity:
 honoring István Németi's 70th birthday, September 8 -
12, 2012, Budapest, MTA Rényi Institute 
[slides: pdf (Part1), slides: pdf (Part2)]
- 
The Existence of Superluminal Particles is Independent of Relativistic Dynamics
 First International Conference on Logic and Relativity:
 honoring István Németi's 70th birthday, September 8 - 12, 2012, Budapest, MTA Rényi Institute [slides: pdf]
- 
Existence of Faster Than Light Signals Implies Hypercomputation Already in Special Relativity
 Turing Centenary Conference University of Cambridge
18 June - 23 June, 2012.
- 
Closed Timelike Curves in Relativistic Hypercomputation
 Unconventional Computation 2011
 10th International Conference on Unconventional Computation, June 6-10, Turku, Finland 2011.
-  New challenges in the axiomatization of relativity theory
 New Challenges in the Field of Military Sciences 2010, Budapest, 28 – 30 September, 2010.
-  Axiomatization of Physics in a Logical Framework
 Physics and Computation 2010
 On the Nile, Egypt, August 30 - September 6, 2010.
- 
A Completeness Theorem for General Relativity
 Physics and Computation 2010
 On the Nile, Egypt, August 30 - September 6, 2010.
- 
Axiomatization of spacetime geometries
 Non-Euclidean Geometry and its Applications 7-th Bolyai-Gauss-Lobachevsky Conference,
 Cluj-Napoca (Kolozsvár), Romania
5-9 July, 2010. [slides: pdf]
- Logic and Language of Relativity Theories
 Logic Language Mathematics A Philosophy Conference in Memory of Imre Ruzsa, September 17-19, 2009
Budapest, Hungary.
- Logical Foundation and Introduction for Relativity Theory (and for relativistic computing)
 Physics and Computation 2009
 September 7-11th 2009 Ponta-Delgada, Azores, Portugal.
- 
Answering Why-Type Questions of Relativity Theories (Both Special and General)
 Mathematics, Physics and Philosophy
In the Interpretations of Relativity Theory 
Budapest 4-6 September 2009  [abstract: pdf]
- Relativistic Computation Tutorial
 Unconventional Computation 2009 September 7-11th 2009 
Ponta-Delgada, Azores, Portugal.
 - 
Symmetry Axioms in Relativity Theories
 Symmetry Festival 2009
 Budapest (2009).  [slides: pdf]
  - 
Reverse Thinking and Axiomatic Method in Foundations of
Physics
 Studia
Logica International Conference Logic and the foundations of physics:
space, time and quanta Trends in Logic VI
 Brussel (2008)
[slides: pdf]
  - 
    Fine tuning the axioms of relativity to specific subject
 Vienna Circle and Hungary, Vienna (2008).  [slides: pdf]
 - 
    A logical analysis of effects of gravitation on clocks
 Mathematics, Physics, and Philosophy in the Interpretations of Relativity Theory
 ELTE, Budapest (2007). [slides: pdf, abstract: doc]
  - 
    Twin
    Paradox from first order logic point of
    view
 Logic
    in Hungary - 2005 Budapest (2005). [slides: pdf]
 - 
 Logical foundation for spacetime
 Logic in Hungary - 2005 Budapest (2005).
  - 
    The effects of gravitation on clocks, proved in axiomatic relativity
 Logic in Hungary - 2005 Budapest (2005).
  - 
   An Alexandrov-Zeeman type theorem
 Logic in Hungary - 2005 Budapest (2005).
  - 
    A logical investigation of inertial and accelerated observes
    in flat space-times
 Kalmár Workshop on logic and
    computer science
 JATE, Szeged (2003).
  - 
    Clock paradox in model theoretic
    terms
 Logic,
    Algebra, Relativity
 Rényi Institute, Budapest (2002).
Talks in Hungarian conferences, seminars and workshops:
- 
Isotropy, principle of relativity and the possible structures for worldview transformations 1st World Logic Day at ELTE, January 14, 2019. [abstract:html slides:pdf]
- 
What is the distance between two logical theories?
 Theoretical Philosophy Forum
 ELTE, Budapest, 23 May 2018.
    
- 
Comparing Classical And Relativistic Kinematics In First-Order Logic
 Theoretical Philosophy Forum
 ELTE, Budapest, 25 October 2017. [slides: pdf]
- 
On using iteration and fixpoint theorems for resolving causal paradoxes connected to time travel
 Theoretical Philosophy Forum
 ELTE, Budapest 11 October 2017.
- 
Az általános relativitáselmélet logikai alapjai
 100 éves az általános relativitáselmélet konferencia 2016 November 9. [slides: pdf]
- 
Principle of Relativity, Isotropy and Homogeneity (Reloaded) 
 Theoretical Philosophy Forum
 ELTE, Budapest 18 November 2015.
- 
Relativitáselmélet és matematikai logika
 MTA Rényi Alfréd Matematikai Kutatóintézet, Összintézeti Szeminárium, 2014. április 7.
- Interpretation of Special Relativity in the Language of Newtonian Kinematics
 MTA Rényi Alfréd Matematikai Kutatóintézet, Logika és Relativitáselmélet Szeminárium, 2014.06.26, Budapest.
- 
Egy axiomatikus út a speciális relativitáselmélettől az általános relativitáselméletig
 Wigner RMI Elméleti Osztály Szemináriuma, Budapest, 2014 Február 21. [slides: pdf]
- 
Does faster than light motion contradict Einstein's theory of relativity?
 Rényi Intézet,  Fiatal Kutatói Szeminárium, Budapest, 2013 Május 6.
- 
Megdől-e a relativitáselmélet, ha vannak fénynél gyorsabb részecskék?
 Wigner RMI Elméleti Osztály Szemináriuma, Budapest, 2012 Június 1.  [slides: pdf]
- 
Miért axiomatizálunk fizikát?
 Matematikai fizika ünnepi ülés Matolcsi Tamás 70. születésnapja alkalmából
 KFKI, RMKI, Budapest, 2011.   [pdf, videó, hang]
- 
What are the numbers in which spacetime?
 LaPoM – Logic and Philosophy of Mathematics szeminárium, ELTE, Logika Tanszék, Budapest, 2011.
  - Mik a számok a melyik téridõben? (What are the numbers in which spacetimes?)
 Fiatal Kutatói Mini-konferencia, Rényi institute, Budapest (2010).  [slides: pdf]
  
- Megmaradási tételek a relativisztikus dinamikában 
(Conservation postulates in relativistic dynamics)
 Theoretical Philosophy Forum, ELTE, Budapest (2009).
  - 
    A conceptual analysis of the relativistic clock paradox
 Philosophy of Science Colloquium
 ELTE Budapest (2007). [slides: pdf]
  - 
    Why First-Order Logic
 Filozófiai logika szeminárium
 ELTE BTK Logika tanszék
 Budapest (2006).
  - 
Az ikerparadoxon logikai analízise (Logical analysis of the twin's paradox)
 Philosophy of Science Colloquium
 ELTE,  Budapest (2006). [slides: pdf]
  - 
    Gyorsulás hatása az órákra a relativitás elméletben
 Matematikafilozófia mûhelyszeminárium
 ELTE BTK  Logika tanszék
 Budapest (2005).