Sahin B.2024-08-042024-08-0420070420-1213https://doi.org/10.1515/dema-2007-0319https://hdl.handle.net/11616/90657We define and study both screen QR-lightlike and screen CR-lightlike submanifolds of an indefinite quaternion Kaehler manifold. We show that screen QR-lightlike submanifolds include quaternion submanifolds and screen CR-lightlike submanifolds include quaternion as well as screen real lightlike submanifolds. We also give some examples of screen QR-lightlike and screen CR-lightlike submanifolds. © 2007 Warsaw University. All rights reserved.eninfo:eu-repo/semantics/openAccessDegenerate metricQR-submanifoldQuaternion Kaehler manifoldLightlike submanifolds of indefinite quaternion kaehler manifoldsArticle40370172010.1515/dema-2007-03192-s2.0-79951892319Q2