202324 Department of Mathematics Events 

December 2023 
Friday 
Analysis and Applications Seminar Speaker: Taylor Brysiewicz, University of Western Ontario Title: Algebraic Matroids, Monodromy, and the Heron Variety
Abstract: Heron's formula gives the area of a triangle in terms of the lengths of its sides. More generally, the volume of any simplex is determined by its edgelengths via a CayleyMenger determinant. 
Saturday 
Welcome to Math Circle! The main purpose of the circle is to have fun with mathematics while learning something in the process. We will be discussing and solving problems, having friendly competitions, playing mathematical games. The purpose of this circle is to amplify the mathematical knowledge of students who like math, and do it in a fun way, we will also look at some AMC problems, and see how what was seen in the circle applies. We will be meeting every other Saturday, beginning Saturday, September 23, 2023. It is important to emphasize what these circle meetings are NOT. They are not classes or lectures. Students are free to walk about and talk. Source of the Problems: The majority of problems will come from very diverse sources, old AMC competitions, the Moscow Math Circle Problem book, historical sources (for example Fibonacci's Liber Abaci), etc. A few will be made up by us. Sources will not usually be credited but credits will be revealed upon request, if we know the source. Registration is FREE! Register Here for Fall, 2023 Math Circles 
Monday 
FAU 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:
Snacks are always available! See you there! 
Tuesday 
Speaker: Dominic Gold, Florida Atlantic University Title: TDAPreprocessing Yields Quantifiable Efficiency Gains in PrivacyPreserving ML Models Abstract: Computational tools grounded in algebraic topology, known collectively as topological data analysis (TDA), have been used for dimensionalityreduction to preserve salient and discriminating features in data. TDA's flagship method, persistent homology (PH), extracts distinguishing shape characteristics from the data directly and provide inherent noisetolerance and compact, interpretable representations of highdimensional data that are amenable to wellestablished statistical methods and machine learning (ML) models; this faithful but compressed representation of data motivates TDA's use to address the complexity, depth, and inefficiency issues present in privacypreserving, homomorphic encryption (HE)based ML models through ciphertext packingthe process of packing multiple encrypted observations into a single ciphertext for Single Instruction, Multiple Data (SIMD) operations. By investigating several TDA featurization techniques on the MNIST digits dataset using a logistic regression (LR) classifier, we demonstrated that the TDA methods chosen improves encrypted model evaluation with a 1025 fold reduction in amortized time while improving model accuracy up to 1.4% compared to naive reductions that used downscaling/resizing. The developed technique also has implications for multiclass classification by sending multiple model classifications in a single packed ciphertext to reduce the communication overhead between the Client and Server, potentially avoiding restriction to a binary classification (as done in past HEML literature for secure classification of MNIST digits). Biography: Dominic Gold is a 6thyear graduate teaching assistant at Florida Atlantic University who studies both cryptography and data science, with his main interest in secure/privacypreserving machine learning on encrypted data. The intersectionality of his research in homomorphic encryption and topological data analysis shows promising implications for research in both fields, with his work in cryptography recognized by venues such as USENIX and ACM CCS. The ultimate goal of his work is to enable realtime predictions on encrypted biomedical data to improve both the reliability, security, and equitability of healthcare systems. Meeting ID: 878 9825 0483 Passcode: gHJF6g All are cordially invited. 
Saturday 
Welcome to Math Circle! The main purpose of the circle is to have fun with mathematics while learning something in the process. We will be discussing and solving problems, having friendly competitions, playing mathematical games. The purpose of this circle is to amplify the mathematical knowledge of students who like math, and do it in a fun way, we will also look at some AMC problems, and see how what was seen in the circle applies. We will be meeting every other Saturday, beginning Saturday, September 23, 2023. It is important to emphasize what these circle meetings are NOT. They are not classes or lectures. Students are free to walk about and talk. Source of the Problems: The majority of problems will come from very diverse sources, old AMC competitions, the Moscow Math Circle Problem book, historical sources (for example Fibonacci's Liber Abaci), etc. A few will be made up by us. Sources will not usually be credited but credits will be revealed upon request, if we know the source. Registration is FREE! Register Here for Fall, 2023 Math Circles 

January 2024 
Mon.Wed. 

Saturday 
American Mathematics Competition  Middle School Students The AMC8Middle School Math Day will be held at FAU 

March 2024 
March 48 
Fiftyfifth Southeastern International Conference on Combinatorics, Graph Theory, and Computing
Register here! If you are an FAU Student or Faculty member, please contact Dr. Maria Provost: mprovost@fau.edu 