Mon, 15 Jun 2020
14:15
Virtual

Geometry from Donaldson-Thomas invariants

Tom Bridgeland
(Sheffield)
Abstract

I will describe an ongoing research project which aims to encode the DT invariants of a CY3 triangulated category in a geometric structure on its space of stability conditions. More specifically we expect to find a complex hyperkahler structure on the total space of the tangent bundle. These ideas are closely related to the work of Gaiotto, Moore and Neitzke from a decade ago. The main analytic input is a class of Riemann-Hilbert problems involving maps from the complex plane to an algebraic torus with prescribed discontinuities along a collection of rays.

Phase-dependence of response curves to deep brain stimulation and their relationship: from essential tremor patient data to a Wilson–Cowan model
 Duchet, B Weerasinghe, G Cagnan, H Brown, P Bick, C Bogacz, R Journal of Mathematical Neuroscience volume 10 issue 1 (30 Mar 2020)

Mobile phone data and Covid-19 - missing an opportunity?

The Coronavirus disease pandemic (COVID-19) poses unprecedented challenges for governments and societies around the world. In addition to medical measures, non-pharmaceutical measures have proven to be critical for delaying and containing the spread of the virus. However, effective and rapid decision-making during all stages of the pandemic requires reliable and timely data not only about infections, but also about human behaviour, especially on mobility and physical co-presence of people. 

Cosmological inference from within the peculiar local universe
 Mohayaee, R Rameez, M Sarkar, S (23 Mar 2020)
Combined search for neutrinos from dark matter self-annihilation in the
Galactic Centre with ANTARES and IceCube
 Collaboration, A Albert, A André, M Anghinolfi, M Ardid, M Aubert, J Aublin, J Baret, B Basa, S Belhorma, B Bertin, V Biagi, S Bissinger, M Boumaaza, J Bouta, M Bouwhuis, M Brânzaş, H Bruijn, R Brunner, J Busto, J Capone, A Caramete, L Carr, J Celli, S Chabab, M Chau, T Moursli, R Chiarusi, T Circella, M Coleiro, A Colomer, M Coniglione, R Coyle, P Creusot, A Díaz, A Deschamps, A Distefano, C Palma, I Domi, A Donzaud, C Dornic, D Drouhin, D Eberl, T Khayati, N Enzenhöfer, A Ettahiri, A Fermani, P Ferrara, G Filippini, F Fusco, L Gay, P Glotin, H Gozzini, R Ruiz, R Graf, K Guidi, C Hallmann, S Haren, H Heijboer, A Hello, Y Hernández-Rey, J Hößl, J Hofestädt, J Huang, F Illuminati, G James, C Jong, M Jong, P Jongen, M Kadler, M Kalekin, O Katz, U Khan-Chowdhury, N Kouchner, A Kreykenbohm, I Kulikovskiy, V Lahmann, R Breton, R Lefèvre, D Leonora, E Levi, G Lincetto, M Lopez-Coto, D Loucatos, S Maggi, G Manczak, J Marcelin, M Margiotta, A Marinelli, A Martínez-Mora, J Mele, R Melis, K Migliozzi, P Moser, M Moussa, A Muller, R Nauta, L Navas, S Nezri, E Nielsen, C Nuñez-Castiñeyra, A O'Fearraigh, B Organokov, M Păvălaş, G Pellegrino, C Perrin-Terrin, M Piattelli, P Poirè, C Popa, V Pradier, T Randazzo, N Reck, S Riccobene, G Sánchez-Losa, A Samtleben, D Sanguineti, M Sapienza, P Schüssler, F Spurio, M Stolarczyk, T Strandberg, B Taiuti, M Tayalati, Y Thakore, T Tingay, S Trovato, A Vallage, B Elewyck, V Versari, F Viola, S Vivolo, D Wilms, J Zaborov, D Zegarelli, A Zornoza, J Zúñiga, J Collaboration, I Aartsen, M Ackermann, M Adams, J Aguilar, J Ahlers, M Ahrens, M Alispach, C Andeen, K Anderson, T Ansseau, I Anton, G Argüelles, C Auffenberg, J Axani, S Bagherpour, H Bai, X V, A Barbano, A Barwick, S Bastian, B Baum, V Baur, S Bay, R Beatty, J Becker, K Tjus, J BenZvi, S Berley, D Bernardini, E Besson, D Binder, G Bindig, D Blaufuss, E Blot, S Bohm, C Böser, S Botner, O Böttcher, J Bourbeau, E Bourbeau, J Bradascio, F Braun, J Bron, S Brostean-Kaiser, J Burgman, A Buscher, J Busse, R Carver, T Chen, C Cheung, E Chirkin, D Choi, S Clark, B Clark, K Classen, L Coleman, A Collin, G Conrad, J Coppin, P Correa, P Cowen, D Cross, R Dave, P Clercq, C DeLaunay, J Dembinski, H Deoskar, K Ridder, S Desiati, P Vries, K Wasseige, G With, M DeYoung, T Diaz, A Díaz-Vélez, J Dujmovic, H Dunkman, M Dvorak, E Eberhardt, B Ehrhardt, T Eller, P Engel, R Evenson, P Fahey, S Fazely, A Felde, J Filimonov, K Finley, C Fox, D Franckowiak, A Friedman, E Fritz, A Gaisser, T Gallagher, J Ganster, E Garrappa, S Gerhardt, L Ghorbani, K Glauch, T Glüsenkamp, T Goldschmidt, A Gonzalez, J Grant, D Grégoire, T Griffith, Z Griswold, S Günder, M Gündüz, M Haack, C Hallgren, A Halliday, R Halve, L Halzen, F Hanson, K Haungs, A Hebecker, D Heereman, D Heix, P Helbing, K Hellauer, R Henningsen, F Hickford, S Hignight, J Hill, G Hoffman, K Hoffmann, R Hoinka, T Hokanson-Fasig, B Hoshina, K Huber, M Huber, T Hultqvist, K Hünnefeld, M Hussain, R In, S Iovine, N Ishihara, A Jansson, M Japaridze, G Jeong, M Jero, K Jones, B Jonske, F Joppe, R Kang, D Kang, W Kappes, A Kappesser, D Karg, T Karl, M Karle, A Kauer, M Kellermann, M Kelley, J Kheirandish, A Kim, J Kintscher, T Kiryluk, J Kittler, T Klein, S Koirala, R Kolanoski, H Köpke, L Kopper, C Kopper, S Koskinen, D Kowalski, M Krings, K Krückl, G Kulacz, N Kurahashi, N Kyriacou, A Lanfranchi, J Larson, M Lauber, F Lazar, J Leonard, K Leszczyńska, A Liu, Q Lohfink, E Mariscal, C Lu, L Lucarelli, F Ludwig, A Lünemann, J Luszczak, W Lyu, Y Ma, W Madsen, J Mahn, K Makino, Y Mallik, P Mallot, K Mancina, S Mariş, I Maruyama, R Mase, K Maunu, R McNally, F Meagher, K Medici, M Medina, A Meier, M Meighen-Berger, S Merino, G Meures, T Micallef, J Mockler, D Momenté, G Montaruli, T Moore, R Morse, R Moulai, M Muth, P Nagai, R Naumann, U Neer, G Nguyen, L Niederhausen, H Nisa, M Nowicki, S Nygren, D Pollmann, A Oehler, M Olivas, A O'Murchadha, A O'Sullivan, E Palczewski, T Pandya, H Pankova, D Park, N Peiffer, P Heros, C Philippen, S Pieloth, D Pieper, S Pinat, E Pizzuto, A Plum, M Porcelli, A Price, P Przybylski, G Raab, C Raissi, A Rameez, M Rauch, L Rawlins, K Rea, I Rehman, A Reimann, R Relethford, B Renschler, M Renzi, G Resconi, E Rhode, W Richman, M Robertson, S Rongen, M Rott, C Ruhe, T Ryckbosch, D Cantu, D Safa, I Herrera, S Sandrock, A Sandroos, J Santander, M Sarkar, S Satalecka, K Schaufel, M Schieler, H Schlunder, P Schmidt, T Schneider, A Schneider, J Schröder, F Schumacher, L Sclafani, S Seckel, D Seunarine, S Shefali, S Silva, M Snihur, R Soedingrekso, J Soldin, D Song, M Spiczak, G Spiering, C Stachurska, J Stamatikos, M Stanev, T Stein, R Stettner, J Steuer, A Stezelberger, T Stokstad, R l, A Strotjohann, N Stürwald, T Stuttard, T Sullivan, G Taboada, I Tenholt, F Ter-Antonyan, S Terliuk, A Tilav, S Tollefson, K Tomankova, L Tönnis, C Toscano, S Tosi, D Trettin, A Tselengidou, M Tung, C Turcati, A Turcotte, R Turley, C Ty, B Unger, E Elorrieta, M Usner, M Vandenbroucke, J Driessche, W Eijk, D Eijndhoven, N Santen, J Verpoest, S Vraeghe, M Walck, C Wallace, A Wallraff, M Wandkowsky, N Watson, T Weaver, C Weindl, A Weiss, M Weldert, J Wendt, C Werthebach, J Whelan, B Whitehorn, N Wiebe, K Wiebusch, C Wille, L Williams, D Wills, L Wolf, M Wood, J Wood, T Woschnagg, K Wrede, G Wulff, J Xu, D Xu, X Xu, Y Yanez, J Yodh, G Yoshida, S Yuan, T Zöcklein, M Physical Review D: Particles, Fields, Gravitation and Cosmology volume 102 issue 8 (27 Oct 2020) http://arxiv.org/abs/2003.06614v1

Exercise of employee stock options with privileged information

Executive stock options (ESOs) are contracts awarded to employees of companies, which confer the right to reap the profit from buying the company stock (exercising the ESO) at or before a fixed maturity time $T$, for a fixed price specified in the contract (the strike price of the ESO). ESOs are used to augment the remuneration package of employees, the idea being to give them an incentive to boost the company's fortunes, and thus the stock price, making their ESO more valuable.

Subscribe to