IPM Calendar 
Tuesday 27 February 2024   Today  
Events for day: Wednesday 22 February 2023    
           09:00 - 16:00     Neuroscience Symposium 2023

fMRI Principles & Practice



           14:00 - 15:00     Combinatorics and Computing Weekly Seminar
Saturation Numbers in Random Graphs


For some fixed graph $F$, a graph $G$ is said to be $F$-saturated if it is a maximal $F$-free graph, i.e., $G$ does not contain any copies of $F$ as a subgraph, but adding any missing edge to $G$ creates one. The saturation number $sat(n, F)$ is defined to be the minimum number of edges in an $F$-saturated graph on $n$ vertices. The saturation problem of finding $sat(n, F)$ is in some sense the opposite of the well-known Tur{a}n problem. Since the 1960s, the saturation number $sat(n, F)$ has been extensively studied for various different choices of $F$. In this talk, we consider the random analog of this problem: minimizing the number of edge ...

           14:00 - 15:00     Wednesday Weekly Seminar - meeting
Multiple Transitions in Vacuum Dark Energy and H0 Tension



The standard model of cosmology called ?CDM provides good consistency to a large span of observational data. In recent years with the improvement of the number and accuracy of cosmological observations, some discrepancies between key cosmological parameters of the standard model have emerged. The most statistically significant tension is the ~5? disagreement between predictions of the Hubble constant, H0, made by the early time observations (CMB) and a number of late-time, model-independent determinations of H0 from local measurements of distances and redshifts. In this talk, I review some aspects of cosmic tensions a ...

           16:00 - 17:00     Mathematics Colloquium
Moving Interfaces and Free Boundary problems


The term moving interfaces and free boundary refers to a class of problems in which the domain of the problem itself is also an a priori unknown, as well as the basic unknown solution to governing equations. Hence, finding the domain is part of the problem. In this lecture I shall present some basic models in moving interfaces and free boundary problems. These includes obstacle problem, Stefan problem, Hele-Shaw flow and Muskat problem. I will also review the state of art for regularity results in obstacle problem.

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