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Departmental Colloquia

29 Wednesday Mar 2023
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04:00 PM 05:00 PM

A mathematical theory of microscale hydrodynamic cloaking and shielding using electro-osmosis

ABSTRACT Rendering objects invisible by cloaking them with metamaterials have made rapid progress in the past decade....
Venue: Online Zoom Zoom Link: https://cityu.zoom.us/j/92523669881?pwd=NDBheFVDdi80amhSU0IxbXNtcVVvUT09 Meeting ID: 925 2366 9881 Passcode: 943914
08 Wednesday Mar 2023
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04:00 PM 05:00 PM

Higher Rank Signatures and Filtrations

ABSTRACT Filtration is an abstract and important notion that appears naturally in stochastic analysis, which models the information flow generated by underlying stochastic processes....
Venue: B5-309 (Yeung)
08 Wednesday Feb 2023
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04:00 PM 05:00 PM

Bogdanov-Takens bifurcation and its applications

ABSTRACT In this talk, we firstly recall Bogdanov-Takens bifurcation and degenerate Bogdanov-Takens bifurcation with codimension three....
Venue: Online via Zoom Registration link: https://cityu.zoom.us/meeting/register/tJcqcuyuqDovEtMcl1tr_OpccAjvNhbZ9hIb
18 Wednesday Jan 2023
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04:00 PM 05:00 PM

Raviart-Thomas enriched Scott-Vogelius finite element methods for the Navier-Stokes equations

ABSTRACT This talk concerns finite element methods for the incompressible Navier--Stokes problem....
Venue: Online via Zoom Registration link: https://cityu.zoom.us/meeting/register/tJ0uf-2trz4vHNycay6iwE3pvmLt2i8PoJ2W
17 Tuesday Jan 2023
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04:00 PM 05:00 PM

A Kaufman type restricted projection theorem to lines in $\mathbb R^3$

ABSTRACT Fix any $C^2$ nondegenerate curve lying on the unit sphere in three dimensions....
Venue: Y5-205 Yeung Kin Man Academic Building
14 Wednesday Dec 2022
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04:00 PM 05:00 PM

Lagrangian Approximations and Computations of Front Speeds in Chaotic Flows

ABSTRACT We study the propagation speeds of reaction-diffusion-advection (RDA) fronts in time-periodic cellular and chaotic flows with Kolmogorov-Petrovsky-Piskunov (KPP) nonlinearity....
Venue: G5-314, Yeung Kin Man Academic Building
07 Wednesday Dec 2022
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04:00 PM 05:00 PM

Mathematics of in-gap interface modes in photonic/phonoic structures

ABSTRACT The developments of topological insulators have provided a new avenue of creating interface modes (or edge modes) in photonic/phononic structures....
Venue: G5-314, Yeung Kin Man Academic Building
30 Wednesday Nov 2022
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04:00 PM 05:00 PM

Evolving finite element methods with an artificial tangential velocity for mean curvature flow and Willmore flow

ABSTRACT An artificial tangential velocity is introduced into the evolving surface finite element methods for mean curvature flow and Willmore flow in order to improve the mesh quality in approxima...
Venue: B5-311 Yeung Kin Man Academic Building
30 Wednesday Nov 2022
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03:00 PM 04:00 PM

Large ranking games with diffusion control

ABSTRACT We consider a symmetric stochastic differential game where each player can control the diffusion intensity of an individual dynamic state process, and the players whose states at a determi...
Venue: Online via Zoom
23 Wednesday Nov 2022
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03:00 PM 04:00 PM

Resolution analysis in some scattering problems and enhanced resolution in certain scenarios

ABSTRACT In this talk, we explore image resolution and the ill-posed-ness of inverse scattering problems.  In particular, we would like to discuss how certain properties of the inclusion might...
Venue: Online via Zoom