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Departmental Colloquia

21 Tuesday Jan 2025
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04:00 PM 05:00 PM

Convergence Rates of Robust Limit Theorems under Peng’s Nonlinear Expectations: A Monotone Scheme Analysis

ABSTRACT The Feynman-Kac formula establishes the probabilistic representation of solutions to PDEs, linking the convergence of numerical schemes for PDEs to limit theorems in probability theory....
Venue: Online via Zoom Registration Link: https://cityu.zoom.us/meeting/register/bpnT8g2PSk6N29XH5gRHrw
20 Monday Jan 2025
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04:00 PM 05:00 PM

From incidence geometry to quantum mechanics

ABSTRACT Herr and Kwak had recently established sharp estimates for certain exponential sums on the 3 dimensional torus by counting rectangles in the plane....
Venue: B5-311, Yeung Kin Man Academic Building
07 Tuesday Jan 2025
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04:00 PM 05:00 PM

Steady Contiguous Vortex-Patch Dipole Solutions of the 2D Incompressible Euler Equation

ABSTRACT It is of great mathematical and physical interest to study traveling wave solutions to the 2D incompressible Euler equation in the form of a touching pair of symmetric vortex patches with ...
Venue: Y5-205, Yeung Kin Man Academic Building
10 Tuesday Dec 2024
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04:00 PM 05:00 PM

$\alpha$-potential games: A new paradigm for $N$-player dynamic games

ABSTRACT Static potential games, pioneered by Monderer and Shapley (1996), are non-cooperative games in which there exists an auxiliary function called static potential function, so that any player...
Venue: Y5-205, Yeung Kin Man Academic Building
03 Tuesday Dec 2024
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05:00 PM 06:00 PM

Improving the convergence of Markov chains via permutations and projections

ABSTRACT This talk aims at improving the convergence to equilibrium of finite Markov chains via permutations and projections....
Venue: G5-214, Yeung Kin Man Academic Building
26 Tuesday Nov 2024
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04:00 PM 05:00 PM

Two-phase micropolar fluids: Phase field models and their analysis

ABSTRACT Micropolar fluids are among the simplest cases of fluids with microstructures, where each fluid particle has its own internal rotations....
Venue: G5-214, Yeung Kin Man Academic Building
15 Tuesday Oct 2024
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03:00 PM 04:00 PM

Mamba Neural Operator: Who Wins? Transformers vs. State-Space Models for PDEs

ABSTRACT Partial differential equations (PDEs) are widely used to model complex physical systems, but solving them efficiently remains a significant challenge....
Venue: Y5-205, Yeung Kin Man Academic Building
08 Tuesday Oct 2024
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04:00 PM 05:00 PM

On the modelling and analysis of grounded shallow ice sheets melting

ABSTRACT In this talk we will study a model describing the evolution of the thickness of a grounded shallow ice sheet....
Venue: G5-214, Yeung Kin Man Academic Building
29 Thursday Aug 2024
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03:00 PM 04:00 PM

Numerical Ergodicity of Monotone SDEs Driven by Multiplicative Noise

ABSTRACT We establish the unique ergodicity of the Markov chain generated by the stochastic theta method (STM) with \theta \in [1/2, 1] for monotone SODEs and SPDEs driven by multiplicative noise....
Venue: Y5-205, Yeung Kin Man Academic Building
12 Wednesday Jun 2024
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11:00 AM 12:00 PM

Optimality of multiscale decompositions in imaging and inverse problems

ABSTRACT The multiscale decomposition of images developed by Tadmor, Nezzar and Vese in 2004 has been extended to other imaging applications and to inverse problems, even in the nonlinear case, by ...
Venue: Y5-302, Yeung Kin Man Academic Building