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The complete plastid genome of <i>Seseli giganteum</i> Lipsky (Apiaceae), an endemic species of the Kyrgyz Republic. [PDF]
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Periodica Mathematica Hungarica, 1993
A ring \(R\) is called a left PP-ring if every principal left ideal is projective. The author gives a new characterization of left PP-rings, uses that to give an elementary proof of a result of the reviewer [Kobe J. Math. 7, No. 1, 77-80 (1990; Zbl 0726.16003)] characterizing triangular PP-rings, and then determines when the ring \(T_ n(R)\) of upper ...
Liu, Zhongkui, Ahsan, Javed
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A ring \(R\) is called a left PP-ring if every principal left ideal is projective. The author gives a new characterization of left PP-rings, uses that to give an elementary proof of a result of the reviewer [Kobe J. Math. 7, No. 1, 77-80 (1990; Zbl 0726.16003)] characterizing triangular PP-rings, and then determines when the ring \(T_ n(R)\) of upper ...
Liu, Zhongkui, Ahsan, Javed
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Generalizations of von Neumann regular rings, PP rings, and Baer rings
Frontiers of Mathematics in China, 2016Based on author's abstract: The author introduces notions of IDS modules, IP modules, and Baer\(^*\) modules as generalizations of von Neumann regular rings, PP rings and Baer rings, respectively, in module theoretic setting. In this paper, some characterizations and properties of IDS modules, IP modules and Baer\(^*\) modules are obtained.
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Catalytic Enantioselective Ring-Opening Reactions of Cyclopropanes
Chemical Reviews, 2021Vincent Pirenne +2 more
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C–C Bond Cleavages of Cyclopropenes: Operating for Selective Ring-Opening Reactions
Chemical Reviews, 2021Ruben Vicente
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