{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T00:28:57Z","timestamp":1760833737855,"version":"build-2065373602"},"reference-count":45,"publisher":"IOP Publishing","issue":"10","license":[{"start":{"date-parts":[[2022,6,20]],"date-time":"2022-06-20T00:00:00Z","timestamp":1655683200000},"content-version":"vor","delay-in-days":32,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/iop-standard\/v1"},{"start":{"date-parts":[[2022,6,20]],"date-time":"2022-06-20T00:00:00Z","timestamp":1655683200000},"content-version":"tdm","delay-in-days":32,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"DOI":"10.13039\/501100001824","name":"Grantov\u00e1 Agentura \u010cesk\u00e9 Republiky","doi-asserted-by":"crossref","award":["19-01850S"],"award-info":[{"award-number":["19-01850S"]}],"id":[{"id":"10.13039\/501100001824","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100004240","name":"Akademie V\u011bd \u010cesk\u00e9 Republiky","doi-asserted-by":"crossref","award":["Praemium Academiae (M. 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As a consequence, we identify a set of necessary and sufficient conditions ensuring that the cosmological vacuum development of an initial data set for Einstein\u2019s field equations admits a cCYK two-form. We refer to these conditions as <jats:italic>closed conformal Killing\u2013Yano initial data<\/jats:italic> equations. The four-dimensional case is special and is treated separately, where we can also handle the conformal Killing\u2013Yano equation without the closed condition.<\/jats:p>","DOI":"10.1088\/1361-6382\/ac5fbe","type":"journal-article","created":{"date-parts":[[2022,3,22]],"date-time":"2022-03-22T18:14:16Z","timestamp":1647972856000},"page":"105002","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Closed conformal Killing\u2013Yano initial data"],"prefix":"10.1088","volume":"39","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1165-4689","authenticated-orcid":false,"given":"Alfonso","family":"Garc\u00eda-Parrado","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4255-6579","authenticated-orcid":true,"given":"Igor","family":"Khavkine","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2022,6,20]]},"reference":[{"key":"cqgac5fbebib1","doi-asserted-by":"publisher","first-page":"1701","DOI":"10.1098\/rspa.2010.0535","type":"journal-article","article-title":"The \u2018non-Kerrness\u2019 of domains of outer communication of black holes and exteriors of stars","volume":"467","author":"B\u00e4ckdahl","year":"2011","journal-title":"Proc. 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All rights, including for text and data mining, AI training, and similar technologies, are reserved.","name":"copyright_information","label":"Copyright Information"},{"value":"2022-03-03","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2022-03-22","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2022-06-20","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}