Noether's problem for some groups of order 16n
Noncyclic Division Algebras.
Normal Polynomials in Simple Extension Fields III.
Note on a variation of the Schröder-Bernstein problem for fields
In this note we study fields with the property that the simple transcendental extension of is isomorphic to some subfield of but not isomorphic to . Such a field provides one type of solution of the Schröder-Bernstein problem for fields.
Numbers with order ≤ 1