2024-25 Department of Mathematics and Statistics Events



 

April, 2025

Thursday
April 3
11:00 am
SE 215

Analysis and Applications

Speaker: Joan Gimeno (Universitat de Barcelona)

Title: Computation of Normal Form on Poincaré maps

Abstract:  I will present a semi-analytical algorithm for computing normal forms in discrete dynamical systems, such as Poincaré maps. The method involves calculating high-order derivatives using jet transport, applying coordinate transformations using composition and reverse operations to simplify the local dynamics around key objects. The method retains resonance terms crucial for understanding the system's behavior.

The algorithm is general, requiring only regularity assumptions, and is robust under parameter variations. I will discuss its application to Hamiltonian systems, with a focus on elliptic fixed points of a time flow map. Using normal form computations, I will construct high-dimensional twist maps and introduce a frequency recovery technique for visualizing high-dimensional tori within the discrete map.

To illustrate the practical utility of the method, I will apply it to the spatial Restricted Three-Body Problem (R3BP), demonstrating how these techniques can be used to gain insight into complex orbital dynamics near L4. The talk will include detailed examples, computational aspects of the method, and a discussion of its broader applications.
 
This has been a joint work with À. Jorba, M. Jorba-Cuscó, and M. Zou.

Sunday
April 6
9:00-3:30
SE-319B

Association for Women in Mathematics (AWM) FAU's Student Chapter

FLORIDA WOMEN IN MATH DAY
AWM is excited to invite you to join us at the  Florida Women in Math Day  on April, 06th! At the event will be research talks, poster presentations, working group discussions, and more! People of all genders, backgrounds, and ages are welcome to attend and present. Lunch and refreshments are provided.  FLYER

Monday
April 7
4:00 pm
SE 215

The FAU SIAM  (Society for Industrial and Applied Mathematics) Student Chapter

Speaker:  Ganesh Shiwakoti

TItle:  TBA

Tuesday
April 8
5:30-6:30 pm
SE 215

Math Club

Join your friends and other math enthusiasts at FAU's Math Club events!  The purpose of our Club is to improve academic ability, spread awareness of mathematics’ importance, and share a passion for all fields of mathematics!

The club is open to all majors and all math backgrounds. Activities at the club will include:

  • Discussion of mathematics’ applications and importance.
  • Study sessions for mathematical concepts.
  • Group problem-solving of math problems from a variety of fields, including set theory, algebra, geometry, topology, and more.
  • Presentation of exciting mathematical research and concepts.
  • Discussions on graduate school and employment

Snacks are always available!  See you there!

Thursday
April 10
10:00 am
SE 215
ZOOM

Crypto Café

Speaker : Maryam Taghi Zadeh (FAU)            +Zoom (click here)

The SHA-2 and SHA-3 hash function families exhibit distinct security characteristics when integrated into XMSS implementations. This research evaluates their comparative performance metrics, security properties, and implementation considerations within the XMSS framework. We analyze the practical implications of various parameter sets as defined in RFC 8391, specifically examining tree height and Winternitz parameter selections and their effects on signature size, generation time, and verification efficiency.

Our work demonstrates the viability of both hash function families within XMSS while highlighting their specific trade-offs. The SHA-3 implementation, based on the Keccak algorithm standardized in FIPS 202, provides superior resistance against side-channel attacks and length extension vulnerabilities compared to SHA-2, while exhibiting different performance characteristics. We present empirical data on computational efficiency across multiple platforms and address the state management challenges inherent to stateful signature schemes like XMSS.

This research contributes to ongoing standardization efforts for post-quantum cryptographic primitives and provides practical insights for organizations preparing for the transition to quantum-resistant signature schemes.

Keywords: Post-Quantum Cryptography, Hash-Based Signatures, XMSS, SHA-2, SHA-3, Digital Signatures, Cryptographic Implementation

Video recording

Thursday
April 10
11:00 am
SE 215

Analysis and Applications

Speaker: Francis Motta, Ph.D., Florida Atlantic University

Title: Generalized Measures of Population Synchrony with Applications to Plasmodium Dynamics

Abstract: Synchronized behavior among individuals is a ubiquitous feature of populations. Understanding mechanisms of (de)synchronization demands meaningful, interpretable, computable quantifications of synchrony, relevant to measurements that can be made of complex, dynamic populations. Despite the importance to analyzing and modeling populations, existing notions of synchrony often lack rigorous definitions, may be specialized to a particular experimental system and/or measurement, or may have undesirable properties that limit their utility. In this talk, I will discuss a recently proposed notion of synchrony for populations of individuals occupying a compact metric space that depends on the Fr\'{e}chet variance of the distribution of individuals across the space. I will discuss several fundamental and desirable mathematical properties of this synchrony measure, including continuity, invariance to metric scaling, and a general approximation result that controls the disparity between synchrony in the true space and synchrony observed through discretization of the state space. Finally, I will highlight the utility and computability of this synchrony measure for various measurement types in a variety of state spaces and discuss the immediate applications to studies concerning the dynamics of the intraerythrocytic developmental cycles of Plasmodium parasites, the causative agent of malaria infections.

Tuesday
April 15
5:30-6:30 pm
SE 215

Math Club

Join your friends and other math enthusiasts at FAU's Math Club events!  The purpose of our Club is to improve academic ability, spread awareness of mathematics’ importance, and share a passion for all fields of mathematics!

The club is open to all majors and all math backgrounds. Activities at the club will include:

  • Discussion of mathematics’ applications and importance.
  • Study sessions for mathematical concepts.
  • Group problem-solving of math problems from a variety of fields, including set theory, algebra, geometry, topology, and more.
  • Presentation of exciting mathematical research and concepts.
  • Discussions on graduate school and employment

Snacks are always available!  See you there!

Friday
April 18
4:00 p.m.
SE 215

American Mathematical Society (FAU's student Chapter) to host a Graduate Student Seminar

Speaker:  Hansraj Jangir, Florida Atlantic Univesity

Title: Compact encryption from Module NTRU

Abstract: The Module-NTRU problem, introduced by Cheon, Kim, Kim, Son (IACR ePrint 2019/1468), and Chuengsatiansup, Prest, Stehlé, Wallet, Xagawa (ASIACCS ’20), generalizes the versatile NTRU assumption. One of its main advantages lies in its ability to offer greater flexibility on parameters, such as the underlying ring dimension. In this talk, I will present several lattice-based encryption schemes, which are IND-CPA (or OW-CPA) secure in the standard model based on the Module-NTRU and Module-LWE problems. Our first encryption scheme is based on the Module-NTRU assumption, which uses the determinant of the secret matrix over the underlying ring for the decryption. Our second scheme is an analogue to the Module-LWE encryption scheme, but uses only a matrix as the public key, based on a vectorial variant of the Module-NTRU problem. 

Please come grab some food and coffee (otherwise I won’t know what to do with it all) and support your fellow graduate students!

Tuesday
April 22
12:00 pm
SE 215

Ph.D. Preliminary Proposal

Speaker: Yuganthi Liyanage

Exam Proposal

Tuesday
April 22
5:30-6:30 pm
SE 215

Math Club

Join your friends and other math enthusiasts at FAU's Math Club events!  The purpose of our Club is to improve academic ability, spread awareness of mathematics’ importance, and share a passion for all fields of mathematics!

The club is open to all majors and all math backgrounds. Activities at the club will include:

  • Discussion of mathematics’ applications and importance.
  • Study sessions for mathematical concepts.
  • Group problem-solving of math problems from a variety of fields, including set theory, algebra, geometry, topology, and more.
  • Presentation of exciting mathematical research and concepts.
  • Discussions on graduate school and employment

Snacks are always available!  See you there!

Tuesday
April 29
5:30-6:30 pm
SE 215

Math Club

Join your friends and other math enthusiasts at FAU's Math Club events!  The purpose of our Club is to improve academic ability, spread awareness of mathematics’ importance, and share a passion for all fields of mathematics!

The club is open to all majors and all math backgrounds. Activities at the club will include:

  • Discussion of mathematics’ applications and importance.
  • Study sessions for mathematical concepts.
  • Group problem-solving of math problems from a variety of fields, including set theory, algebra, geometry, topology, and more.
  • Presentation of exciting mathematical research and concepts.
  • Discussions on graduate school and employment

Snacks are always available!  See you there!

 

May, 2025

May 9-11


Conference on Ordered Algebraic Structures

Wilkes Honors College

If interested in presenting a talk, please contact Papiya Bhattacharjee.

For information, program schedule and abstracts, please visit: Conference on Ordered Algebraic Structures OAL 2025

 

August, 2025

August, 4-8
9 am-5 pm
Sandbox
(Wimberly Library)

CryptoTeens in South Florida summer camp is a five - day camp for high-school students who want to discover the technology and the science behind cryptography. Participants will be introduced to the fundamental principles of c ryptography and learn how to apply conceptual knowledge to real-world situations. The camp will focus on Post-Quantum Cryptography, the area of math that is in charge of protecting our information in the era of quantum technology.  The program includes stimulating lectures, inspiring talks by alumni and speakers from industry and government , and engaging exercise sessions.

 

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