Tamely ramified subfields of division algebras

Research output: Contribution to journalArticlepeer-review

Abstract

For any number field K, it is unknown which finite groups appear as Galois groups of extensions L/K such that L is a maximal subfield of a division algebra with center K (a K-division algebra). For K=Q, the answer is described by the long standing Q-admissibility conjecture.We extend a theorem of Neukirch on embedding problems with local constraints in order to determine for every number field K, what finite solvable groups G appear as Galois groups of tamely ramified maximal subfields of K-division algebras, generalizing Liedahl's theorem for metacyclic G and Sonn's solution of the Q-admissibility conjecture for solvable groups.

Original languageEnglish
Pages (from-to)184-195
Number of pages12
JournalJournal of Algebra
Volume378
DOIs
StatePublished - 5 Mar 2013
Externally publishedYes

Keywords

  • Admissibility
  • Crossed products
  • Division algebras
  • Embedding problems
  • Inverse Galois problem

All Science Journal Classification (ASJC) codes

  • Algebra and Number Theory

Fingerprint

Dive into the research topics of 'Tamely ramified subfields of division algebras'. Together they form a unique fingerprint.

Cite this