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DTSTART;TZID=Asia/Kolkata:20230220T170000
DTEND;TZID=Asia/Kolkata:20230223T180000
DTSTAMP:20230217T234416Z
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SUMMARY:Mathematics Colloquium | Dr Nabanita & Dr Snehajit | 20th Feb to 23rd Feb 2023
DESCRIPTION:The Department of Mathematics has organised a mini-course on Algebraic Geometry given by Nabanita Ray and Snehajit Misra\, both from the Chennai Mathematical Institute (CMI). In addition\, there are two talks in the Mathematics Colloquium. Nabanita and Snehajit are visiting Ashoka University in the week of February 24. \nThe details of their talks are as follows. \nDate : 20th Feb 2023  |  Time: 5:00 PM to 6:00 PM | Venue: Lecture Room – AC04-407 | Mini-course on Algebraic Geometry \nNOTE: Please note the unusual day and time.  \nSpeaker : Nabanita Ray (CMI) \nTitle: Positive cones of line bundles in algebraic geometry. \nAbstract: In this introductory talk we recall the definition of affine and projective varieties over complex numbers and their morphisms. Then we briefly discuss the isomorphic classes of line bundles on a variety which form an abelian group known as the Picard Group of that variety. A quotient of Picard Group by the numerically trivial line bundles is known as Neron-Severi group which is a finitely generated abelian group. Then we describe some important classes of line bundles on these varieties and convex cones generated by these line bundles inside the real Neron-Severi group. \n——————————————————————————————————————————————————————————————————————————————————- \nDate : 21st Feb 2023  |  Time:  3:00 PM to 4:00 PM | Venue: Lecture Room – AC04-407 | Mini-course on Algebraic Geometry I| \nNOTE: Please note that we will begin 15 minutes earlier than usual.  \nSpeaker : Snehajit Misra (CMI) \nTitle:  Positive Cones of Projective Bundles \nAbstract : In this introductory talk\, we will review the basic definitions of various positive cones inside the Real Neron-Severi group of a smooth complex projective variety. Special emphasis will be given to compute the positive cones of line bundles on projective bundles over a smooth complex projective variety. We will define the notion of vector bundles and projective bundles over smooth complex projective varieties for this purpose. \n——————————————————————————————————————————————————————————————————————————————————- \nDate : 21st Feb 2023  |  Time: 4:30 PM to 5:30 PM | Venue: Lecture Room – AC04-407 | Mathematics Colloquium I \nSpeaker : Nabanita Ray (CMI) \nTitle: Weyl and Zariski chambers on projective surfaces \nAbstract: Let X be a nonsingular complex projective surface. Big cone is a convex cone generated by the big classes of line bundles on the real Neron-Severi group. The Weyl and Zariski chambers give two interesting decompositions of the big cone of X. In this talk we see these two decompositions and determine when a Weyl chamber is contained in the interior of a Zariski chamber and vice versa. Moreover we describe  when a Weyl chamber can intersect non-trivially with a Zariski chamber. \n——————————————————————————————————————————————————————————————————————————————————- \nDate : 23rd Feb 2023  |  Time: 5:00 PM to 6:00 PM | Venue: Lecture Room – AC04-407 | Mathematics Colloquium II \nNOTE: Please note the unusual day and time.  \nSpeaker : Dr Snehajit Misra \nTitle : On existence of Weak Zariski decomposition on projective bundles \nAbstract : Zariski introduced a decomposition on surfaces to dismantle orthogonally (pseudo-)effective divisors into positive and negative parts\, both of which enjoy the useful geometric properties. Many attempts has been made to generalise this decomposition on higher dimensional varieties\, for instance the Fujita-Zariski decomposition and the CKM-Zariski decomposition. Recently\, a weeker notion of this decomposition has been   suggested by Birkar. In this talk\, we will discuss about existence of weak Zariski decomposition of pseudo-effective divisors on projective bundles over higher dimensional varieties in order to answer a question posed by Birkar. \n——————————————————————————————————————————————————————————————————————————————————- \nAbout Speakers:  \nNabanita Ray obtained her Ph.D. from the Institute of Mathematical Sciences (I.M.Sc.) Chennai in 2019. She is currently a Post-Doctoral Fellow in the Chennai Mathematical Institute (CMI). \nSnehajit Misra obtained his Ph.D. from the Institute of Mathematical Sciences (I.M.Sc.) Chennai in 2019 and did his post-doctoral work in TIFR and IIT\, Bombay. Currently\, he is the SERB-NPDF Postdoctoral Fellow\, Chennai Mathematical Institute\, Chennai. \n 
URL:https://www.ashoka.edu.in/event/mathematics-colloquium-dr-nabanita-dr-snehajit-20th-feb-to-23rd-feb-2023/
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DTSTART;TZID=Asia/Kolkata:20230223T140000
DTEND;TZID=Asia/Kolkata:20230223T150000
DTSTAMP:20230217T033949Z
CREATED:20230217T033949Z
LAST-MODIFIED:20230217T033949Z
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SUMMARY:Spatio-temporal Regulation of Protein Localization during Cellular Morphogenesis
DESCRIPTION:Abstract:\nProteins carry out almost all physiological processes inside a cell. Faithful and accurate execution of every cellular process requires precise control over the timing and location of proteins that execute that particular process. But how is the temporal control of spatial localization of proteins achieved inside cells? What happens to this control mechanism when the cell is challenged\, say\, during an infection? These are some of the questions that our lab is excited about and keen to discuss in this talk. \nAbout the Speaker:\nAnup is an Assistant Professor of Biology at Ashoka University. His lab’s interests primarily revolve around understanding how living cells regulate their shape during development and disease. He teaches Cell Biology\, Microbiology\,  Force & Motion in Biological Systems\, and Seminar Series in Biological Sciences.\n 
URL:https://www.ashoka.edu.in/event/spatiotemporal-regulation-of-protein-localization-during-cellular-morphogenesis/
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DTSTART;TZID=Asia/Kolkata:20230223T183000
DTEND;TZID=Asia/Kolkata:20230223T200000
DTSTAMP:20230219T222816Z
CREATED:20230219T222816Z
LAST-MODIFIED:20230219T222816Z
UID:41260-1677177000-1677182400@www.ashoka.edu.in
SUMMARY:EVS Colloquium | Marine Mammal Behavioral Ecology and Conservation Behavior | Dr. Mridula Srinivasan
DESCRIPTION:Please join us for a Seminar on "Marine Mammal Behavioral Ecology and Conservation Behavior" by Dr. Mridula Srinivasan to be held on Thursday\, 23 February 2023\, 6:30 PM (IST). \nZoom Link: https://zoom.us/j/96402126190?pwd=cVJ1eVlpYXJNVFRDc2RQMUZrNWVxUT09 \n  \nMarine mammals are iconic species that share similar life history attributes as land mammals. And like terrestrial mammals\, marine mammal behaviors are shaped by ecological forces albeit in a unique marine environment\, which can benefit and constrain population survival and reproduction. In this talk\, I will provide a brief overview of marine mammal species diversity and characteristics\, introduce the concept of behavioral ecology through a few case studies\, and end with the importance of considering animal behavior\, especially social characteristics in marine mammal conservation.     \n  \nDr. Mridula Srinivasan is currently on a temporary assignment as Special Advisor to the NOAA Assistant Secretary for Environmental Predictions and Observations at NOAA Headquarters\, in Washington\, D.C. In her regular role\, she is the Director of the Marine Mammal and Turtle Division at NOAA Fisheries’ Southeast Fisheries Science Center in Miami\, Florida\, where she oversees the marine mammal and turtle research enterprise to produce science with significant conservation and societal impact. Her PhD was in wildlife and fisheries sciences from Texas A & M University. 
URL:https://www.ashoka.edu.in/event/evs-colloquium-marine-mammal-behavioral-ecology-and-conservation-behavior-dr-mridula-srinivasan/
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