Principally Quasi-Baer Ring Hulls

  • Gary F. Birkenmeier
  • Jae Keol Park
  • S. Tariq Rizvi
Part of the Trends in Mathematics book series (TM)


We show the existence of principally (and finitely generated) right FI-extending right ring hulls for semiprime rings. From this result, we prove that right principally quasi-Baer (i.e., right p.q.-Baer) right ring hulls always exist for semiprime rings. This existence of right p.q.-Baer right ring hull for a semiprime ring unifies the result by Burgess and Raphael on the existence of a closely related unique smallest overring for a von Neumann regular ring with bounded index and the result of Dobbs and Picavet showing the existence of a weak Baer envelope for a commutative semiprime ring. As applications, we illustrate the transference of certain properties between a semiprime ring and its right p.q.-Baer right ring hull, and we explicitly describe a structure theorem for the right p.q.-Baer right ring hull of a semiprime ring with only finitely many minimal prime ideals. The existence of PP right ring hulls for reduced rings is also obtained. Further application to ring extensions such as monoid rings, matrix, and triangular matrix rings are investigated. Moreover, examples and counterexamples are provided.

Mathematics Subject Classification (2000)

Primary 16N60 Secondary 16S20 16P70 


FI-extending right ring hulls right rings of quotients p.q.-Baer rings quasi-Baer rings 


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Copyright information

© Birkhäuser Verlag Basel/Switzerland 2010

Authors and Affiliations

  • Gary F. Birkenmeier
    • 1
  • Jae Keol Park
    • 2
  • S. Tariq Rizvi
    • 3
  1. 1.Department of MathematicsUniversity of Louisiana at LafayetteLafayetteUSA
  2. 2.Department of MathematicsBusan National UniversityBusanSouth Korea
  3. 3.Department of MathematicsOhio State UniversityLimaUSA

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