| Wednesday 14 May 2025 | |
| Events for day: Wednesday 14 May 2025 |
| 11:00 - 12:00 Wednesday Weekly Seminar - Virtual Format Void-Dominated Cosmology: Looking for Dark Energy in the Kitchen School PARTICLES AND ACCELERATORS Abstract: This talk addresses key challenges in modern cosmology and introduces the motivations for a "void-based cosmology". In this approach, voids (bubbles) are treated as independent, dynamic components of the cosmic web next to clusters (drops). Drawing inspiration from the behavior of heated milk overflowing, the presentation will examine the connection between void surface tension and the cosmological constant, the modified uncertainty principle, and the evolving dark energy density resulting from void mergers on cosmic scales. Indico Link: https://indico.hep.ipm.ir/e/e.yusofi ... 13:30 - 15:00 Journal Club Distinct roles of monkey OFC-subcortical pathways in adaptive behavior School COGNITIVE SCIENCES ... 14:00 - 15:00 Combinatorics and Computing Weekly Seminar Results in some versions of Ramsey Numbers: Multipartite and Bipartite Ramsey Numbers, Pair Cases and m-bipartite Ramsey School MATHEMATICS For any k + 1 ≥ 3 positive integers t, n_1, . . . , n_k, there exists a positive integer N such that if every t-element subset of the set {1, . . . , N} is colored using one of the k colors 1, . . . , k, then there exists an index i ∈ {1, . . . , k} and a subset S ⊆ {1, . . . , N} with |S| = n_i, such that every t-element subset of S is colored with color i. This is a generalization of Ramseys Theorem, which is often formulated in the language of graph theory by: ? interpreting {1, 2, . . . , N} as the vertex set of the complete graph K_N, ? considering the case t = 2, and ? coloring each 2-element sub ... 14:00 - 15:00 Weekly Seminar Next-Gen Strategies for Vision: Decoding, Targeting, and Regenerating the Retina School BIOLOGICAL SCIENCES Retinal degenerative diseases including neovascular age-related macular degeneration (nAMD), diabetic retinopathy (DR), glaucoma, and retinitis pigmentosa (RP) are major global causes of vision loss. Current therapies, such as anti-VEGF treatments, face limitations due to biological complexity, treatment resistance, and delivery challenges. Our research integrates systems biology, molecular engineering, and gene therapy to address these gaps. We identify key molecular hubs and pathways, develop next-generation anti-angiogenic agents (hinge-truncated sFLT01), and design novel peptide-based gene delivery system (MiRGD) that enhances targeting a ... 15:30 - 17:00 Geometry and Topology Weekly Seminar Energy, Triangles, and Cosmetic Surgeries School MATHEMATICS The cosmetic surgery conjecture predicts that for a non-trivial knot in the three-sphere, performing two Dehn surgeries with different surgery coefficients r and r' results in distinct oriented three-manifolds. Earlier works on the conjecture imply that one needs to consider only the case r'=-r and r=2 or 1/n for some integer n. In this talk, I'll explain how one can remove the case of r=1/n, reducing the conjecture to the case r=2. Furthermore, in the case r=2, the Alexander polynomial of the knot is trivial. The key tools in the proof are a persistence module associated to any integer homology sphere using instanton gauge theory and an exa ... 17:30 - 19:00 Algebraic Geometry Biweekly Webinar KSB Stability is Automatic in Codimension 3 School MATHEMATICS I will start with a review of KSB/A stability, especially their local version and then discuss joint work with Janos Kollar, showing that it is enough to check these conditions, including flatness, up to codimension 2. This implies that we have a very good understanding of this stability condition in general, because local KSB-stability is trivial at codimension 1 points, and quite well understood at codimension 2 points, since we have a complete classification of 2-dimensional slc singularities. Venue: online https://zoom.us/join Meeting ID: 9086116889 Passcode: 362880 < ... |