{"id":9628,"date":"2026-03-25T09:40:16","date_gmt":"2026-03-25T01:40:16","guid":{"rendered":"https:\/\/www.simis.cn\/?page_id=9628"},"modified":"2026-03-25T09:40:16","modified_gmt":"2026-03-25T01:40:16","slug":"friday-morning-seminar-coulomb-branches-shift-operators-and-stable-basis","status":"publish","type":"page","link":"https:\/\/www.simis.cn\/zh\/friday-morning-seminar-coulomb-branches-shift-operators-and-stable-basis\/","title":{"rendered":"Friday Morning Seminar: Coulomb branches, shift operators, and stable basis"},"content":{"rendered":"<p>Speaker: Kifung Chan (The Chinese University of Hong Kong)<\/p>\n\n\n\n<p>Time: 2026-03-27 10:00-12:00<br>Location: 1610, SIMIS<\/p>\n\n\n\n<p>\u6458\u8981\uff1a<\/p>\n\n\n\n<p>Given a complex reductive group G and a G-representation N, Braverman, Finkelberg, and Nakajima defined the associated Coulomb branch algebra A_{G,N}. In the first half of the talk, I will present a new characterization of the Coulomb branch algebra as the largest space on which shift operators can be defined for any smooth X admitting a proper G-equivariant morphism to N. In the second half, I will discuss a variant of this results and explain applications to the stable basis and to the equivariant quantum cohomology of cotangent bundles of (partial) flag varieties.<\/p>","protected":false},"excerpt":{"rendered":"<p>Speaker: Kifung Chan (The Chinese University of Hong Kong) Time: 2026-03-27 10:00-12:00Location: 1610, SIMIS Abstract: Given a complex reductive group G and a G-representation N, Braverman, Finkelberg, and Nakajima defined the associated Coulomb branch algebra A_{G,N}. In the first half of the talk, I will present a new characterization of the Coulomb branch algebra as &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.simis.cn\/zh\/friday-morning-seminar-coulomb-branches-shift-operators-and-stable-basis\/\"> <span class=\"screen-reader-text\">Friday Morning Seminar: Coulomb branches, shift operators, and stable basis<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>","protected":false},"author":8,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"_themeisle_gutenberg_block_has_review":false,"_ti_tpc_template_sync":false,"_ti_tpc_template_id":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/pages\/9628"}],"collection":[{"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/comments?post=9628"}],"version-history":[{"count":1,"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/pages\/9628\/revisions"}],"predecessor-version":[{"id":9629,"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/pages\/9628\/revisions\/9629"}],"wp:attachment":[{"href":"https:\/\/www.simis.cn\/zh\/wp-json\/wp\/v2\/media?parent=9628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}