Athanasios G. Georgiadis
Personal data
Origin Athens, Greece, 14/08/1984.
Family status Married and Father of a Son.
e-mail georgiaa@tcd.ie and athanasios.g.georgiadis@gmail.com
Office 128, Lloyd's institute, Trinity College of Dublin, the University of Dublin.
Position
Assistant Professor, Trinity College of Dublin, The University of Dublin, Ireland.
Director of the Major in Mathematics, Minor in Statistics.
Previous employment
2018-2019: Assistant Professor (fixed term), University of Cyprus, Nicosia, Cyprus.
2017-2018: Assistant Professor, Aalborg University, Denmark.
2014-2017: Postdoctoral Researcher, Aalborg University, Denmark.
2013-2014: Expert Scientist, University of Cyprus, Nicosia, Cyprus.
2012-2013: Postdoctoral Researcher, University of Cyprus, Nicosia, Cyprus.
2012-2013: Lecturer, Varna University, Nicosia, Cyprus.
2010-2011: Teaching assistant, Aristotle University of Thessaloniki, Greece.
Education
Aristotle University of Thessaloniki, Department of Mathematics, PhD, 2011.
Aristotle University of Thessaloniki, Department of Mathematics, MSc, 2008 (9.7/10).
Aristotle University of Thessaloniki, Department of Mathematics, Diploma, 2006 (9.5/10)
undergraduate studies completed in seven rather than the regular eight semesters.
Teaching distinctions
2017-2018: Teacher of the Year, School of Engineering and Science, Aalborg University, Denmark.
Funding
2019-2022: Non linear approximation NLAP-2019, University of Cyprus (PI: G. Kyriazis).
2014-2016: Mathematical and Statistical Analysis of Spatial Data. Danish Council for Independent Research−Natural Sciences, grant 12-124675.
2012-1013: Decomposition of Weighted Smoothness Spaces and Applications, University of Cyprus.
2008-2011: Onassis’ Foundation Scholarship for PhD studies.
2006-2008: Onassis’ Foundation Scholarship for MSc studies.
2002-2006: State Scholarship Foundation for undergraduate studies (a new distinction award in everyone of the four years).
Short visits
16/12/2022−24/12/2022: University of Cyprus, Nicosia, Cyprus.
27/06/2022−08/07/2022: University of Cyprus, Nicosia, Cyprus.
06/07/2020−20/07/2020: University of Cyprus, Nicosia, Cyprus.
10/12/2019−21/12/2019: University of Cyprus, Nicosia, Cyprus.
22/04/2018−24/04/2018: NTNU, Trondheim, Norway.
19/12/2017−05/01/2018: University of Cyprus, Nicosia, Cyprus.
02/10/2017−05/10/2017: Stockholm University, Sweden.
11/04/2017−12/04/2017: University of Lund, Sweden.
24/01/2017−27/01/2017: University of Jena, Germany.
19/12/2016−23/12/2016: University of Cyprus, Nicosia, Cyprus.
05/07/2016−30/07/2016: University of Cyprus, Nicosia, Cyprus.
21/12/2015−30/12/2015: University of Cyprus, Nicosia, Cyprus.
15/12/2014−15/01/2015: University of Cyprus, Nicosia, Cyprus.
Publications
Published or accepted in peer-reviewed journals
34. A. Alegria, G. Cleanthous, A.G. Georgiadis, E. Porcu, P. A. White, Gaussian random fields on the product of spheres: Theory and applications. Electron. J. Statist. 18(1): 1394-1435 (2024). Link
33. G. Cleanthous, A.G. Georgiadis, P. White, Pointwise density estimation on metric spaces and applications in seismology. Metrika, to appear. Link
32. G. Filippou, A. G. Georgiadis, A. K.umar Jha, Establishing the link: Does web traffic from various marketing channels influence direct traffic source purchases? Marketing Letters, 35, 59–71 (2024). VLink.
31. A. G. Georgiadis and G. Kyriazis, Duals of Besov and Triebel-Lizorkin spaces associated with operators. Constructive approximations (invited contribution). 57, No 2, 547-577 (2023) PDF
30. G. Cleanthous, A. G. Georgiadis, E. Porcu, Oracle inequalities and upper bounds for kernel density estimators on manifolds and more general metric spaces. Journal of Nonparametric Statistics. (2022) Volume 34, issue 4, 734-757. PDF
29. G. Cleanthous and A. G. Georgiadis, Product $(\alpha_1,\alpha_2)$-modulation spaces. Science China Mathematics. 2022, Volume 65, issue 8, 1599-1640. Pdf
28. A. G. Georgiadis and G. Kyriazis, Embeddings between Triebel-Lizorkin spaces on metric spaces associated with operators. Anal. Geom. Metr. Spaces 8, 418-429 (2020) (invited contribution). PDF
27. G. Cleanthous and A. G. Georgiadis, Mixed-norm $\alpha$-modulation spaces. Transactions A.M.S. (2020) Vol. 373 (5), 3323-3356. PDF
26. G. Cleanthous, A. G. Georgiadis, G. Kerkyacharian, P. Petrushev, D. Picard, Kernel and wavelet density estimators on manifolds or more general metric spaces. Bernoulli. 26, No. 3, 1832-1862 (2020). Paper: PDF Supplement:PDF
25. A. G. Georgiadis, G. Kyriazis, P. Petrushev, Product Besov and Triebel-Lizorkin spaces with application to nonlinear approximation. Constructive approximations. 53 No 1, 39-83 (2021). PDF
24. G. Cleanthous, A. G. Georgiadis, A. Lang and E. Porcu, Regularity, continuity and approximation of isotropic Gaussian random fields on compact two-point homogeneous spaces. Stochastic Proc. Applications. vol 130 issue 8, August 2020, 4873-4891. PDF
23. A. G. Georgiadis, G. Kerkyacharian, G. Kyriazis and P. Petrushev, Atomic and molecular decomposition for homogeneous spaces of distributions associated to non-negative self-adjoint operators. Journ. Fourier Anal. Appl. (2019) 25(6), 3259-3309. PDF
22. G. Cleanthous, A. G. Georgiadis, and M. Nielsen, Molecular decomposition and Fourier multipliers for holomorphic Besov and Triebel-Lizorkin spaces. Monatsh. Math., 188 No. 3 (2019), 467-493. PDF
21. G. Cleanthous, A. G. Georgiadis, and M. Nielsen, Molecular decomposition of anisotropic homogeneous mixed-norm spaces with applications to the boundedness of operators. Appl. Comput. Harmon. A., (ACHA), 47 (2019), no. 2, 447-480. PDF
20. A. G. Georgiadis, and M. Nielsen, Spectral multipliers on spaces of distributions associated with non-negative self-adjoint operators. J. Approx. Theory, 234 (2018), 1-19. PDF
19. G. Cleanthous, A. G. Georgiadis, and M. Nielsen, Fourier multipliers on anisotropic mixed-norm spaces of distributions. Math. Scand., 124 no2 (2019), 289-304. PDF
18. G. Cleanthous, A. G. Georgiadis, and M. Nielsen, Fourier multipliers on decomposition spaces of Modulation and Triebel-Lizorkin type. Mediterranean J. Math., (2018), 15: 122. PDF
17. G. Cleanthous, A. G. Georgiadis, and M. Nielsen, Anisotropic mixed-norm Hardy spaces. J. Geometric Anal., 27 No. 4 (2017), 2758-2787. PDF
16. A. G. Georgiadis, and M. Nielsen, Pseudodifferential operators on spaces of distributions associated with non-negative self-adjoint operators. J. Fourier Anal. Appl., 23 No 2 (2017), 344-378. PDF
15. A. G. Georgiadis, G. Kerkyacharian, G. Kyriazis and P. Petrushev, Homogeneous Besov and Triebel-Lizorkin spaces associated to non-negative self-adjoint operators. J. Math. Anal. Appl., 449 No 2 (2017), 1382-1412. PDF
14. G. Cleanthous, A. G. Georgiadis, and M. Nielsen, Discrete decomposition of homogeneous mixed-norm Besov spaces. Contemporary Math. (A.M.S.), 693 (2017), 167-184. PDF
13. A. G. Georgiadis, J. Johnsen and M. Nielsen, Wavelet transforms for homogeneous mixed-norm Triebel-Lizorkin spaces. Monatsh. Math., 183 No. 4 (2017), 587-624. PDF
12. A. G. Georgiadis and M. Nielsen, Pseudodifferential operators on mixed-norm Besov and Triebel-Lizorkin spaces. Math. Nachr., 289 No. 16 (2016), 2019-2036. PDF
11. G. Cleanthous and A. G. Georgiadis, Riesz means via heat kernel bounds. Bull. Hellenic Math. Soc. 60 (2016), 1-10. PDF
10. G. Cleanthous and A. G. Georgiadis, Growth and monotonicity properties for elliptically schlicht functions. Conform. Geom. Dyn. (A.M.S.) 20 (2016), 116-127. PDF
9. G. Cleanthous and A. G. Georgiadis, Upper and lower estimates for the modulus of bounded holomorphic functions. Complex Anal. Oper. Theory, 10 No. 1 (2016), 205-212. PDF
8. A. G. Georgiadis, Oscillating spectral multipliers on Riemannian manifolds. Analysis Munchen, 35 No. 2 (2015), 85-91. PDF
7. G. Cleanthous and A. G. Georgiadis, Multi-point bounds for analytic functions under measure conditions. Complex Var. Elliptic Equ., 60 No. 4 (2015), 470-477. PDF
6. A. G. Georgiadis and A. Fotiadis, Riesz means on discrete groups and graphs. Potential Anal. 38 No. 1 (2013), 21-30. PDF
5. A. G. Georgiadis, Mikhlin-Hormander theorem for higher order differential operators on Riemannian manifolds. Jour. Math. Sci.: adv. app., 7 No. 2 (2011), 115-132. PDF
4. A. G. Georgiadis, $H^p$- bounds for spectral multipliers on Riemannian manifolds. Bull. Sci. Math., 134 (2010), 750-766. PDF
Published in peer-reviewed conference proceedings
3. A. G. Georgiadis, Analysis on metric spaces associated with operators. First Congress of Greek Mathematicians PDF and Analysis on metric spaces associated with operators II. Anniversary for the 90 years of Math. Dept. Auth., 2018. PDF
2. G. Cleanthous, A. G. Georgiadis, and M. Nielsen, Spaces of distributions with mixed Lebesgue norms. Proceedings of the 15th Panhellenic conference of mathematical analysis (2016), 29-38. PDF
Ph.D. Thesis
1. A. G. Georgiadis, Spectral multipliers and Riesz means on manifolds, groups and graphs. Ph.D. Thesis, Aristotle University of Thessaloniki, Greece, 2011. PDF
Teaching
21. Advanced Linear Models 1. MSc in Statistics and Sustainability, Trinity College of Dublin, Ireland.
20. Linear Regression, online, Postgraduate Certificate, Diploma and M.Sc. in Statistics and Data Science, Trinity College of Dublin, Ireland.
19. Decision Analysis (including module construction), Management Science and Information System Studies, Trinity College of Dublin, Ireland (2020-2023).
18. Introduction to Statistics II, Department of Mathematics, Trinity College of Dublin, Ireland (2020-2024).
17. Statistical Methods, Departments of Education and Psychology, University of Cyprus (2019).
16. Statistical Analysis I, Departments of Economics, Logistics and Business Administration (2018 and 2019), University of Cyprus.
15. Mathematical modelling and numerical methods, Departments of chemical and structure engineers, Aalborg University, Denmark.
14. Partial differential equations and applied statistics, Chemical engineering and biotechnology, Aalborg University, Denmark.
13. Calculus for robotics, Department of Robotics, Aalborg University, Denmark (2017 and 2018).
12. Linear algebra for robotics, Department of Robotics, Aalborg University, Denmark (2016 and 2017).
11. Functional analysis for graduate students (Operators on Hilbert spaces), Department of Mathematical sciences, Aalborg University, Denmark (2016 and 2018).
10. Functional analysis (Operators on Hilbert spaces), Department of Mathematical sciences, Aalborg University, Denmark (2016 and 2018).
9. Analysis 1 (TA), Department of Mathematical sciences, Aalborg University, Denmark.
8. Linearity and Differentiability (TA), Department of Mathematical sciences, Aalborg University, Denmark.
7. Statistics and probabilities for civil engineers, University of Cyprus.
6. Statistics and probabilities for mechanical engineers, University of Cyprus.
5. Mathematics for civil engineers (ODE’s and vector calculus), University of Cyprus.
4. Mathematics for mechanical engineers, University of Cyprus.
3. Mathematical analysis. Department of Public Administration, Varna University, Nicosia, Cyprus.
2. Linear algebra and analytic geometry. Department of Computer Science, Varna University, Nicosia, Cyprus.
1. Complex analysis (TA). Department of Mathematics, Aristotle University of Thessaloniki, Greece.
Supervising
PhD (SCSS, TCD).
2. Andrew Percival (2023-).
1. George Filippou (2022-).
Masters (SCSS, TCD).
1. Kernel density estimators on the sphere.
Summer internships (School of Mathematics, TCD).
3. Random fields on the ball.
2. Kernel density estimators.
1. Modelling the spread of COVID-19 in Ireland.
Final year projects (Management Science and Information Systems Studies, TCD).
11. Analysing the effect of snow and ice on Arctic Birch trees (in collaboration with Norwegian Institute of Bioeconomy Research (NIBIO)).
10. Analyzing correlations between variables and conversions (in collaboration with Amplifyd).
9. Identify what skus (products) to promote and why for an ecommerce business (in collaboration with Pakobazaar).
8. Using advanced analytics techniques for conversion forecasting (in collaboration with Amplifyd).
7. Create product clusters, product affected by seasonality and price change (in collaboration with Pakobazaar).
6. Identify what SKUs (products) to promote and why for an Ecommerce business (in collaboration with Pakobazaar).
5. Marketing mix modelling (MMM) in Digital Marketing (in collaboration with Amplifyd).
4. Determining Optimal Fungicide Rates to Maximise Financial Margins (in collaboration with Teagasc).
3. An analysis of training data (in collaboration with Irish Life).
2. Marketing Campaign Effectiveness Through Closed-loop Reporting (in collaboration with The Insurance Institute).
1. Risk Management Anomaly Detection POC (in collaboration with Flutter Entertainment company).
Final year projects (School of Mathematics, TCD).
9. Regularity and approximation of random fields on the sphere.
8. Multivariate isotropic random fields on the ball.
7. Kernel density estimators on metric spaces and applications.
6. Isotropic Gaussian random fields on the hypertorus.
5. Classical epidemiological models and SARS-COV-2.
4. Random fields on manifolds.
3. A Statistical analysis of COVID-19 in Ireland.
2. Mathematical riddles of COVID-19.
1. Compartmental models in epidemiology.
Group projects (Department of Mathematical sciences, Aalborg University, Denmark).
3. Dynamical systems.
2. Ordinary differential equations.
1. Group theory, group-project supervision.
Curriculum construction contribution
Calculus, Service course, Aalborg University, Denmark.
Decision Analysis, TCD.
Linear Regression, TCD.
Teaching notes (available if requested)
Introduction to functional analysis and measure theory.
A first course in Statistics.
EDI
Gender equality committee, Aalborg University, Denmark.
Organization of events
4. Invited session organizer on the conference: "International Symposium in Non Parametric Statistics 2022". Session: Non-parametric estimation and geometry. Cyprus (2022).
3. Organizer of the conference: “Marie Curie International Fellows’ talks in Aalborg”. Department of Mathematical Sciences, Aalborg University, Denmark (2017).
2. Organizer of the daily conference: “A day with Analysis, Geometry and Statistics”. Department of Mathematical Sciences, Aalborg University, Denmark (2017).
1. Founder and organizer of the departmental seminar in Department of Mathematical Sciences, Aalborg University, Denmark (2016-2018).
Selected talks
16. Conference for the 90 years of the Department of Mathematics of AUTH, December 2018, Thessaloniki. Analysis on metric spaces associated with operators II.
15. First Congress of Greek Mathematicians-100 years of HMS-, June 2018, Athens. Analysis on metric spaces associated with operators.
14. Analysis seminar. Department of mathematical sciences, NTNU (Norwegian University of Science and Technology), Norway, April 2018. Analysis and its applications on metric spaces associated with operators.
13. Analysis seminar. Department of mathematics, Analysis seminar of KTH and Stockholm University, Sweden, October 2017. Analysis on metric spaces associated with operators.
12. International conference: New prospectives in the theory of function spaces and applications, Bedelwo, Poland, September 2017. Homogeneous Triebel-Lizorkin spaces on metric spaces associated with operators.
11. Analysis seminar. Department of mathematics, University of Lund, Sweden, April 2017. Triebel-Lizorkin spaces for global and complex analysis.
10. Seminar in function spaces. Department of mathematics, University of Jena, Germany, January 2017. Spaces of distributions associated with operators.
9. Panhellenic conference in analysis. Department of Mathematics, University of Crete, Greece, May 2016. Triebel-Lizorkin and Besov spaces associated with operators.
8. Skagen workshop, Denmark, April 2015. Pseudo-differential operators on anisotropic spaces of distributions.
7. Department seminar. Department of Mathematics, University of Cyprus, Nicosia, April 2013. Analysis and geometry on graphs.
6. Colloquium in mathematics. Department of Mathematics, European University of Cyprus, December 2012. Spectral multipliers on Riemannian manifolds.
5. Department seminar. Department of Mathematics, University of Cyprus, Nicosia, October 2012. Spectral multipliers on Riemannian manifolds.
4. Panhellenic conference in analysis. Department of Mathematics, University of Patras, Greece, May 2012. Riesz means and oscillating multipliers on Riemannian manifolds.
3. Conference in analysis for young researchers. Department of Mathematics, University of Athens, Greece, October 2010. $L^p$- bounds for Riesz means on graphs.
2. Panhellenic conference in analysis. Department of Mathematics, University of Ioannina, Greece, May 2010. Spectral multipliers on Riemannian manifolds.
1. International harmonic analysis conference: Harmonic analysis on Samos. Department of Mathematics, University of Aegean, Samos, September 2009. $H^p$- bounds for spectral multipliers on manifolds.
Reviewing
American mathematical society. Reviewer number: 74550.
Zentralblatt math. Reviewer number: 14491.
Referee for the journals
Applied and Computational Harmonic Analysis, Analysis and its Applications, Acta Applicandae Mathematicae, Analysis and Mathematical Physics, Bernoulli, Banach Journal of Mathematical Analysis, Canadian Journal of Mathematics, Constructive Approximations, Communications in Pure and Applied Analysis, Communications in Mathematics and Statistics, Complex Analysis and Operator Theory, Dissertationes Mathematicae, Journal of Geometric Analysis, Journal of Fourier Analysis and Applications, Journal of Mathematical Studies, Journal of Mathematical Analysis and Applications, Journal of Approximation Theory, Journal of Inequalities and Applications, Mathematical Methods of Statistics, Mathematische Nachrichten, Monatshefte fur Mathematik, Open Mathematics, Proceedings of American Mathematical Society, Revista Mathematica Complutense, Rocky Mountain Journal of Mathematics, Science China Mathematics, Taiwanese Journal of Mathematics, Mathematische Zeitschrift, Stochastics, Advances in Mathematics.
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