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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251031T160000
DTEND;TZID=America/New_York:20251031T170000
DTSTAMP:20260526T140055
CREATED:20250821T184019Z
LAST-MODIFIED:20250929T210008Z
UID:793-1761926400-1761930000@pages.vassar.edu
SUMMARY:(Colloquium) Christina Athanasouli\, Williams College
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-christina-athanasouli-williams-college/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251014T160000
DTEND;TZID=America/New_York:20251014T170000
DTSTAMP:20260526T140055
CREATED:20250929T152639Z
LAST-MODIFIED:20250929T210029Z
UID:856-1760457600-1760461200@pages.vassar.edu
SUMMARY:(Colloquium) Patrick Gambill\, Washington State University and Mitsubishi Electric Research Laboratories
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-patrick-gambill-washington-state-university-and-mitsubishi-electric-research-laboratories/
LOCATION:Rockefeller Hall 200
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251008T160000
DTEND;TZID=America/New_York:20251008T170000
DTSTAMP:20260526T140055
CREATED:20250826T134309Z
LAST-MODIFIED:20250915T200204Z
UID:802-1759939200-1759942800@pages.vassar.edu
SUMMARY:(Colloquium) Adam Lowrance\, Vassar College
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-adam-lowrance-vassar-college/
LOCATION:Rockefeller Hall 203
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250924T160000
DTEND;TZID=America/New_York:20250924T170000
DTSTAMP:20260526T140055
CREATED:20250805T160839Z
LAST-MODIFIED:20250915T200224Z
UID:781-1758729600-1758733200@pages.vassar.edu
SUMMARY:(Colloquium) Ron Buckmire\, Marist University
DESCRIPTION:Different Differences: An Introduction to Nonstandard Finite Difference Schemes \nFrom Calculus we know that a derivative of a function can be approximated using a\ndifference quotient. There are different forms of the difference quotient\, such as the\nforward difference (most common)\, backward difference (less common) and centered\ndifference (more accurate). In this talk I will discuss several different differences\,\nspecifically nonstandard finite differences (NFSD) that can be used to approximate the\nderivatives that appear in differential equations as a solution technique. Many NSFD\nschemes have been created\, discovered\, and promoted by Dr. Ronald E. Mickens\, an\nAfrican American Emeritus Professor of Physics at Clark Atlanta University\, who has\nwritten more than 300 research articles and a dozen books. I’ll provide examples of\nNSFD schemes that can be used to solve a wide variety of problems drawn from\nseveral different areas\, such as first-semester Calculus\, elementary ordinary differential\nequations\, and more advanced differential equations.
URL:https://pages.vassar.edu/mathstats/event/colloquium-ron-buckmire/
LOCATION:Rockefeller Hall 203
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250825T160000
DTEND;TZID=America/New_York:20250825T170000
DTSTAMP:20260526T140055
CREATED:20250825T160119Z
LAST-MODIFIED:20250825T160218Z
UID:796-1756137600-1756141200@pages.vassar.edu
SUMMARY:(Colloquium) Robyn Brooks\, University of Utah
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-robyn-brooks-university-of-utah/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250825T080000
DTEND;TZID=America/New_York:20250825T170000
DTSTAMP:20260526T140055
CREATED:20250825T160310Z
LAST-MODIFIED:20250825T160916Z
UID:798-1756108800-1756141200@pages.vassar.edu
SUMMARY:(Colloquium) Peter Oberly\, University of Rochester
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-peter-oberly-university-of-rochester/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250423T160000
DTEND;TZID=America/New_York:20250423T170000
DTSTAMP:20260526T140055
CREATED:20250116T013027Z
LAST-MODIFIED:20250122T212908Z
UID:717-1745424000-1745427600@pages.vassar.edu
SUMMARY:(Colloquium) Becca Thomases\, Smith College
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-becca-thomases-smith-college/
LOCATION:Rockefeller Hall 300
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250417T160000
DTEND;TZID=America/New_York:20250417T170000
DTSTAMP:20260526T140055
CREATED:20250117T155707Z
LAST-MODIFIED:20250122T212854Z
UID:727-1744905600-1744909200@pages.vassar.edu
SUMMARY:(Colloquium) Jinyoung Park\, Courant Institute at NYU
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-jinyoung-park-courant-institute-at-nyu/
LOCATION:Rockefeller Hall 300
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250403T160000
DTEND;TZID=America/New_York:20250403T170000
DTSTAMP:20260526T140055
CREATED:20250127T215031Z
LAST-MODIFIED:20250129T142901Z
UID:749-1743696000-1743699600@pages.vassar.edu
SUMMARY:(Colloquium) Katie Ellman-Aspnes\, Notre Dame University
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-katie-ellman-aspnes-notre-dame-university/
LOCATION:Rockefeller Hall 300
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250324T160000
DTEND;TZID=America/New_York:20250324T170000
DTSTAMP:20260526T140055
CREATED:20250120T230116Z
LAST-MODIFIED:20250122T212839Z
UID:732-1742832000-1742835600@pages.vassar.edu
SUMMARY:(Colloquium) Tim Goldberg\, Lenoir–Rhyne University
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-tim-goldberg-lenoir-rhyne-university/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250225T160000
DTEND;TZID=America/New_York:20250225T170000
DTSTAMP:20260526T140055
CREATED:20250122T034021Z
LAST-MODIFIED:20250122T212821Z
UID:746-1740499200-1740502800@pages.vassar.edu
SUMMARY:(Colloquium) Andrew Schultz\, Wellesley College
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-andrew-schultz-wellesley-college/
LOCATION:Rockefeller Hall 310
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250221T160000
DTEND;TZID=America/New_York:20250221T170000
DTSTAMP:20260526T140055
CREATED:20250116T012940Z
LAST-MODIFIED:20250122T212734Z
UID:715-1740153600-1740157200@pages.vassar.edu
SUMMARY:(Colloquium) Jamie Juul\, Colorado State University
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-jamie-juul-colorado-state-university/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250131T160000
DTEND;TZID=America/New_York:20250131T170000
DTSTAMP:20260526T140055
CREATED:20250116T012851Z
LAST-MODIFIED:20250122T212741Z
UID:712-1738339200-1738342800@pages.vassar.edu
SUMMARY:(Colloquium) Austin MBaye\, Northeastern University
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-austin-mbaye-northeastern-university/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241204T160000
DTEND;TZID=America/New_York:20241204T170000
DTSTAMP:20260526T140055
CREATED:20240908T234048Z
LAST-MODIFIED:20241010T233006Z
UID:629-1733328000-1733331600@pages.vassar.edu
SUMMARY:(Colloquium) Nikolas Schonsheck (VC '15)\, Rockefeller University
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-nikolas-schonsheck-vc-15-rockefeller-university/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241122T160000
DTEND;TZID=America/New_York:20241122T170000
DTSTAMP:20260526T140055
CREATED:20241010T134315Z
LAST-MODIFIED:20250122T212747Z
UID:647-1732291200-1732294800@pages.vassar.edu
SUMMARY:(Colloquium) Ivan Cheltsov\, University of Edinburgh
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-ivan-cheltsov-university-of-edinburgh/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241118T160000
DTEND;TZID=America/New_York:20241118T170000
DTSTAMP:20260526T140055
CREATED:20241117T034318Z
LAST-MODIFIED:20241117T034343Z
UID:703-1731945600-1731949200@pages.vassar.edu
SUMMARY:(Colloquium) Federica Ricci\, University of California\, Irvine
DESCRIPTION:Colloquium Talk\nFederica Ricci\, University of California\, Irvine\nMonday November 18\, 2024 at 4:00PM\nRocky 312 \nTitle: Statistical modeling of sparse networks\n\nAbstract: The study of scientific and social phenomena often requires modeling data in the form of networks\, i.e. the set of interactions between entities like proteins\, neurons or people. Statistical models provide ways to address important questions\, including why some entities are connected but not others\, and whether there are interactions that have not been observed. In this talk\, I will present my work on developing a class of models that can discover an unobserved set of clusters (or communities) among interacting entities and that can learn the number of clusters from data. Unlike previous approaches with those properties\, the proposed framework can model sparse networks. Capturing sparsity is especially important when dealing with large networks: for example\, in online social networks\, someone’s connections grow much slower than linearly with the number of users. I will summarize a posterior-inference method based on Markov Chain Monte Carlo and I will show the advantages of this approach on a set of social and biological networks.
URL:https://pages.vassar.edu/mathstats/event/colloquium-federica-ricci-university-of-california-irvine/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241114T153000
DTEND;TZID=America/New_York:20241114T163000
DTSTAMP:20260526T140055
CREATED:20241001T235901Z
LAST-MODIFIED:20241113T165503Z
UID:641-1731598200-1731601800@pages.vassar.edu
SUMMARY:(Colloquium) Joshua Snoke\, RAND Corporation
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-joshua-snoke-rand-corporation/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241028T160000
DTEND;TZID=America/New_York:20241028T170000
DTSTAMP:20260526T140055
CREATED:20240908T232033Z
LAST-MODIFIED:20241010T233055Z
UID:626-1730131200-1730134800@pages.vassar.edu
SUMMARY:(Colloquium) Zheng Bian (VC '17)\, Clarkson University
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-zheng-bian-vc-17-clarkson-university/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241022T160000
DTEND;TZID=America/New_York:20241022T170000
DTSTAMP:20260526T140055
CREATED:20240908T231901Z
LAST-MODIFIED:20241010T233125Z
UID:623-1729612800-1729616400@pages.vassar.edu
SUMMARY:(Colloquium) Dean Spyropoulos (VC '19)\, Michigan State University
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-dean-spyropoulos-vc-19-michigan-state-university/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20241004
DTEND;VALUE=DATE:20241005
DTSTAMP:20260526T140055
CREATED:20240908T231747Z
LAST-MODIFIED:20240927T184611Z
UID:621-1728000000-1728086399@pages.vassar.edu
SUMMARY:(Colloquium) Jeff Goldsmith\, Columbia University
DESCRIPTION:Wearable Devices in Public Health Research \nFriday\, October 4th at 4pm in Rocky 310 \nIn the last ten years\, technological advances have made many activity- and physiology-monitoring wearable devices available for use in both clinical trials and large-scale epidemiological studies. This trend will continue and even expand as devices become cheaper and more reliable. These developments open up a tremendous opportunity for clinical and public health researchers to collect critical data at an unprecedented level of detail\, while posing new challenges for statistical analysis of rich\, complex data. This talk will present a collection of examples and analysis approaches that use accelerometer data\, including activity classification; identifying and interpreting variability in activity trajectories; building regression models in which activity trajectories are the response; and understanding shifts in the circadian rhythms that underlie the timing of activity. We’ll draw on several applications\, including the Baltimore Longitudinal Study of Aging and data collected through the Columbia Center for Children’s Environmental Health.
URL:https://pages.vassar.edu/mathstats/event/colloquium-jeff-goldsmith-columbia-university/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240920T160000
DTEND;TZID=America/New_York:20240920T170000
DTSTAMP:20260526T140055
CREATED:20240908T231715Z
LAST-MODIFIED:20240912T184934Z
UID:618-1726848000-1726851600@pages.vassar.edu
SUMMARY:(Colloquium) Ophelia Adams\,	University of Rochester
DESCRIPTION:
URL:https://pages.vassar.edu/mathstats/event/colloquium-ophelia-adamsuniversity-of-rochester/
LOCATION:Rockefeller Hall 310
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240426T150000
DTEND;TZID=America/New_York:20240426T160000
DTSTAMP:20260526T140055
CREATED:20240316T135933Z
LAST-MODIFIED:20240908T234154Z
UID:524-1714143600-1714147200@pages.vassar.edu
SUMMARY:(Colloquium) Leo Goldmakher 4/26
DESCRIPTION:Some Fascinating Characters in Number Theory \nAre there infinitely many primes of the form n^2+1\, where n is an integer? No one knows. In fact\, there’s no example of any (single variable) polynomial of degree 2 or greater that’s been proved to output infinitely many primes. By contrast\, the linear polynomial n+1 outputs infinitely many primes\, a fact that’s been known for over 2000 years. Rather less trivially\, Dirichlet proved in 1837 that any linear polynomial of the form an+b with a\, b coprime must output infinitely many primes. To make his proof work\, Dirichlet introduced certain nice functions called characters\, which evolved (over the course of the next hundred years) into fundamental objects of study in algebra and number theory. I will discuss some of the history and mathematics of Dirichlet’s characters\, including a very recent and simple characterization of them that seems to have been previously overlooked.
URL:https://pages.vassar.edu/mathstats/event/colloquium-leo-goldmakher-4-26/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240409T150000
DTEND;TZID=America/New_York:20240409T160000
DTSTAMP:20260526T140055
CREATED:20240316T135634Z
LAST-MODIFIED:20240908T234154Z
UID:520-1712674800-1712678400@pages.vassar.edu
SUMMARY:(Colloquium) Anna Pun 4/9
DESCRIPTION:The Magic of Tableaux: Exploring the Wonders of Algebraic Combinatorics \nAnna Pun\nCUNY Baruch College \nTuesday\, April 9th\n3pm Rocky 312 \nTableaux are one of the most fundamental and versatile objects in algebraic combinatorics\, as they can encode and connect various concepts and structures in the field. In this talk\, we will start with the definition and properties of Young tableaux\, which are graphical representations of partitions of integers. We will then see how tableaux can be used in algebra: their connection to symmetric functions and partition algebras; how they can be related to various combinatorial operations\, such as the RSK-algorithm and the Jeu-de-taquin procedure; and how they can give rise to various combinatorial structures\, such as lattice paths\, vacillating tableaux\, and parking functions. We will also explore some variations of tableaux\, such as composition tableaux and set-valued tableaux\, and discuss some interesting problems and conjectures that arise from them. We will conclude with some open questions and directions for future research on tableaux and their applications in algebraic combinatorics.
URL:https://pages.vassar.edu/mathstats/event/colloquium-anna-pun-4-9/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20231214T130000
DTEND;TZID=America/New_York:20231214T140000
DTSTAMP:20260526T140055
CREATED:20231130T154540Z
LAST-MODIFIED:20231209T012944Z
UID:322-1702558800-1702562400@pages.vassar.edu
SUMMARY:(Colloquium) Robin Belton\, Smith College
DESCRIPTION:Colloquium Talk\nRobin Belton\, Smith College\nThursday\, December 14\, 2023 at 1PM\nRocky  312 \nTitle: Adaptive Algorithms in Geometric and Topological Visualization \nAbstract: Geometry and Topology have been increasingly used to visualize and summarize the “shape” of data. Mapper is a popular topological data visualization tool that takes as input a set of point cloud data and produces as output a graph of vertices and edges reflecting the structure of the underlying data. To use Mapper\, the user must specify many parameters to get the output graph. Optimizing these parameters is an essential part of obtaining a nice Mapper graph but are often challenging to find. We focus on the open cover parameter and propose a new algorithm for learning an open cover that is based on clustering algorithms\, statistical tests\, and an iterative splitting procedure. At the end\, we discuss how to extend these ideas to different settings.
URL:https://pages.vassar.edu/mathstats/event/colloquium-robin-belton-smith-college/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20231116T150000
DTEND;TZID=America/New_York:20231116T160000
DTSTAMP:20260526T140055
CREATED:20230926T031502Z
LAST-MODIFIED:20231108T022934Z
UID:158-1700146800-1700150400@pages.vassar.edu
SUMMARY:(Colloquium) Colby Kelln\, Cornell University
DESCRIPTION:Title: The Mathematics of Tilings \nAbstract: Imagine we are hired to tile an infinitely large bathroom floor. What tile shapes could we use? We will use math to explore and refine this question to make sure that our client is happy with our plans before we start laying grout. \nThursday\, November 16th at 3pm in Rocky 203.
URL:https://pages.vassar.edu/mathstats/event/colloquium-talk-4/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20231113T160000
DTEND;TZID=America/New_York:20231113T170000
DTSTAMP:20260526T140055
CREATED:20231106T025339Z
LAST-MODIFIED:20231130T154235Z
UID:295-1699891200-1699894800@pages.vassar.edu
SUMMARY:(Colloquium) Shaoyang Ning\, Williams College
DESCRIPTION:Colloquium Talk\nShaoyang Ning\, Williams College\nMonday November 13\, 2023 at 4PM\nRocky  312 \nTitle: Using Google search data for localized flu tracking \nAbstract: Big data from the Internet has great potential to track social and economic events at multiple geographical levels. Focusing on localized (regional\, state-level) tracking the seasonal influenza epidemics within U.S.\, I will introduce a statistical model that efficiently combines publicly available Google search data at different geographical resolutions with traditional influenza surveillance data from the Centers for Disease Control and Prevention. Our method outperforms time-series-based influenza tracking methods. Our model is robust and easy to implement\, with the flexibility to incorporate additional information from other sources and/or resolutions\, making it generally applicable to tracking other social\, economic or public health events (such as COVID-19) at the regional or local level.
URL:https://pages.vassar.edu/mathstats/event/colloquium-shaoyang-ning-williams-college/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20231110T160000
DTEND;TZID=America/New_York:20231110T170000
DTSTAMP:20260526T140055
CREATED:20231106T025239Z
LAST-MODIFIED:20231108T144126Z
UID:292-1699632000-1699635600@pages.vassar.edu
SUMMARY:(Colloquium) Hung Tong\, The University of Alabama
DESCRIPTION:Colloquium Talk\nHung Tong\, The University of Alabama\nFriday November 10\, 2023 at 4PM\nRocky  312 \nTitle: Robust and Flexible Model-Based Clustering for Incomplete Data \nAbstract: Model-based clustering is an important class of cluster analysis that aims to produce smaller groups of similar observations in a data set by means of finite mixture models. Since real data often contain outliers\, exhibit skewness\, and come in the form of partially observed records\, developing robust and flexible model-based clustering methods for incomplete data has been a particularly active research area in recent years. Herein\, we introduce the contaminated normal mixture for robust clustering as well as our newly developed framework for fitting it to data sets with values missing at random. Regarding flexible clustering\, we discuss our work in extending special and limiting cases of the generalized hyperbolic mixture to both complete and incomplete data sets. All these mixture models are implemented and available in the R package MixtureMissing\, offering a wide range of model-based clustering options to address various data challenges of researchers.
URL:https://pages.vassar.edu/mathstats/event/colloquium-hung-tong-the-university-of-alabama/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20231106T160000
DTEND;TZID=America/New_York:20231106T170000
DTSTAMP:20260526T140055
CREATED:20231106T024908Z
LAST-MODIFIED:20231106T025139Z
UID:290-1699286400-1699290000@pages.vassar.edu
SUMMARY:(Colloquium) Katherine Brumberg\, University of Pennsylvania
DESCRIPTION:Colloquium Talk\nKatherine Brumberg\, University of Pennsylvania\, Wharton School\nMonday November 6\, 2023 at 4PM\nRocky  312 \nTitle: Optimal Stratification to Address Selection Bias in Observational Studies \nAbstract: Randomized controlled trials are the gold standard for determining a treatment effect. However\, they are oftentimes too costly\, infeasible\, or unethical to carry out. In such situations\, we turn to observational studies\, where the treatment assignment is not randomized. This results in selection bias\, leading to incomparable treatment and control groups. One of the most common techniques to address this is propensity score stratification\, where we form strata that contain both treated and control individuals who look similar initially so that we can calculate a treatment effect within each stratum. However\, propensity score stratification may leave residual imbalances in the covariate distributions between the treated and control groups. Our new technique of optimal refinement addresses this by splitting each propensity score stratum in two in such a way that optimizes the resulting covariate balance. \n\nIn this talk\, we will assume no background knowledge\, starting with a brief overview of the foundational ideas of randomized controlled trials\, observational studies\, stratification\, propensity scores\, and standardized mean differences.  We will then move to discussing our new technique of optimal refinement. We will start by carefully defining the objective as an integer program. Because solving integer programs is often computationally intractable\, we will use randomized rounding\, an approximation algorithm\, to obtain a provably good solution. We will look at the performance of this method both in simulations and via a real-world example studying the effect of right heart catheterization on 30-day mortality.
URL:https://pages.vassar.edu/mathstats/event/colloquium-katherine-brumberg-university-of-pennsylvania/
LOCATION:Rockefeller Hall 312
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20231102T150000
DTEND;TZID=America/New_York:20231102T160000
DTSTAMP:20260526T140055
CREATED:20230926T031404Z
LAST-MODIFIED:20231026T135616Z
UID:156-1698937200-1698940800@pages.vassar.edu
SUMMARY:(Colloquium) Karen Parshall\, University of Virginia
DESCRIPTION:Colloquium Talk\nProfessor Karen Parshall\, University of Virginia\nThursday November 2nd\, 2023 at 3PM\nRocky 300 \n \nTitle: Growing Research-Level Mathematics in 1930s America: An Historical Paradox \nAbstract: World War I had marked a break in business as usual within the American mathematical research community. In its aftermath\, there was a stirring sense of entering into “a new era in the development of our science.”  And then the stock market crashed. Would it be possible in such newly straitened times to sustain into the 1930s the momentum that American mathematicians had managed to build in the 1920s? This talk will explore the contours of an answer to that question.
URL:https://pages.vassar.edu/mathstats/event/colloquium-talk-3/
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20231026T150000
DTEND;TZID=America/New_York:20231026T160000
DTSTAMP:20260526T140055
CREATED:20230926T031308Z
LAST-MODIFIED:20231025T185628Z
UID:154-1698332400-1698336000@pages.vassar.edu
SUMMARY:(Colloquium) Joe Kraisler\, Amherst College
DESCRIPTION:Colloquium Talk\nProfessor Joe Kraisler\, Amherst College\nThursday October 26\, 2023 at 3PM\nRocky 300 \n \nTitle: Topological Insulators and the SSH Model \nAbstract: Electronic band theory was one of the early 20th century achievements of quantum mechanics and placed solids into three categories: conductors\, semiconductors\, and insulators. However\, starting in the 1980s with the discovery of the Quantum Hall Effect\, a new phase of matter known as Topological Insulators (TIs) were theorized and eventually realized. These materials act as insulators in the interior\, or bulk\, while allowing electrons to freely move along the boundary\, or edge\, of the material. Additionally\, there is a relationship between the a) number of states which exist on the boundary and b) a property of the interior which is protected under small defects. This relationship is often referred to as the Bulk-Edge Correspondence. \nWe will study the simplest example of a 1-dimensional topological insulator\, the SSH (Su-Schrieffer-Heeger) model of polyacetylene\, and prove the bulk edge correspondence for this particular system. No previous physics knowledge is required.
URL:https://pages.vassar.edu/mathstats/event/colloquium-talk-2/
CATEGORIES:Colloquium
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