Vinoth, A.Johnson, P.2026-02-062021Springer Proceedings in Mathematics and Statistics, 2021, Vol.344, , p. 359-36421941009https://doi.org/10.1007/978-981-33-4646-8_30https://idr.nitk.ac.in/handle/123456789/30384A closed range bounded operator on a Hilbert space is said to be an EP operator if the operator commutes with its Moore-Penrose inverse. In this paper, we characterize EP operators through factorization in the Krein space settings. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.EP operatorKrein spaceMoore-Penrose inverse