{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:26:52Z","timestamp":1760149612101,"version":"build-2065373602"},"reference-count":22,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T00:00:00Z","timestamp":1692576000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>This article explores matter collineations (MCs) of static plane-symmetric spacetimes, considering the stress\u2013energy tensor in its contravariant and mixed forms. We solve the MC equations in two cases: when the energy\u2013momentum tensor is nondegenerate and degenerate. For the case of a degenerate energy\u2013momentum tensor, we employ a direct integration technique to solve the MC equations, which leads to an infinite-dimensional Lie algebra. On the other hand, when considering the nondegenerate energy\u2013momentum tensor, the contravariant form results in a finite-dimensional Lie algebra with dimensions of either 4 or 10. However, in the case of the mixed form of the energy\u2013momentum tensor, the dimension of the Lie algebra is infinite. Moreover, the obtained MCs are compared with those already found for covariant stress\u2013energy.<\/jats:p>","DOI":"10.3390\/sym15081614","type":"journal-article","created":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T08:53:31Z","timestamp":1692608011000},"page":"1614","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Symmetries of the Energy\u2013Momentum Tensor for Static Plane Symmetric Spacetimes"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6321-0502","authenticated-orcid":false,"given":"Fawad","family":"Khan","sequence":"first","affiliation":[{"name":"Department of Mathematics, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wajid","family":"Ullah","sequence":"additional","affiliation":[{"name":"Department of Mathematics, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2303-760X","authenticated-orcid":false,"given":"Tahir","family":"Hussain","sequence":"additional","affiliation":[{"name":"Department of Mathematics, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8317-748X","authenticated-orcid":false,"given":"Wojciech","family":"Sumelka","sequence":"additional","affiliation":[{"name":"Institute of Structural Analysis, Poznan University of Technology, Piotrowo 5, 60-965 Poznan, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Stephani, H., Kramer, D., Maccallum, M., Hoenselaers, C., and Herlt, E. 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