{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T14:09:47Z","timestamp":1772374187715,"version":"3.50.1"},"reference-count":23,"publisher":"Walter de Gruyter GmbH","issue":"5","funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BPD\/90538\/2012"],"award-info":[{"award-number":["SFRH\/BPD\/90538\/2012"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>In this article, we give a definition and a classification of \u2018higher\u2019 simple-minded systems in triangulated categories generated by spherical objects with negative Calabi\u2013Yau dimension. We also study mutations of this class of objects and that of \u2018higher\u2019 Hom-configurations and Riedtmann configurations. This gives an explicit analogue of the \u2018nice\u2019 mutation theory exhibited in cluster-tilting theory.<\/jats:p>","DOI":"10.1515\/forum-2016-0015","type":"journal-article","created":{"date-parts":[[2016,11,18]],"date-time":"2016-11-18T13:01:03Z","timestamp":1479474063000},"page":"1065-1081","source":"Crossref","is-referenced-by-count":11,"title":["Mutations of simple-minded systems in Calabi\u2013Yau categories generated by a spherical object"],"prefix":"10.1515","volume":"29","author":[{"given":"Raquel","family":"Coelho Sim\u00f5es","sequence":"first","affiliation":[{"name":"Centro de An\u00e1lise Funcional, Estruturas Lineares e Aplica\u00e7\u00f5es , Faculdade de Ci\u00eancias da Universidade de Lisboa , Campo Grande, Edif\u00edcio C6, Piso 2, 1749-016 Lisboa , Portugal"}]}],"member":"374","published-online":{"date-parts":[[2016,11,17]]},"reference":[{"key":"2023033114102149722_j_forum-2016-0015_ref_001_w2aab3b7e2436b1b6b1ab2ab1Aa","doi-asserted-by":"crossref","unstructured":"T.  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