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 Kaplansky-type theorems in graded integral domains Bull. Korean Math. Soc. 2015 Vol. 52, No. 4, 1253-1268 https://doi.org/10.4134/BKMS.2015.52.4.1253Published online July 31, 2015 Gyu Whan Chang, Hwankoo Kim, and Dong Yeol Oh Incheon National University, Hoseo University, Chosun University Abstract : It is well known that an integral domain $D$ is a UFD if and only if every nonzero prime ideal of $D$ contains a nonzero principal prime. This is the so-called Kaplansky's theorem. In this paper, we give this type of characterizations of a graded P$v$MD (resp., G-GCD domain, GCD domain, B\'ezout domain, valuation domain, Krull domain, $\pi$-domain). Keywords : Kaplansky-type theorem, upper to zero, prime (primary) element, graded P$v$MD, graded GCD domain, graded G-GCD domain, graded B\'ezout domain, graded valuation domain, graded Krull domain, graded $\pi$-domain MSC numbers : 13A02, 13A15, 13F05, 13G05 Downloads: Full-text PDF