-extremal valued fields.
2-D polynomial equations
2-transitiv abstract ovals of odd order.
A certain property of polynomials.
A certain property of polynomials. (Short Communication).
A Characterization of Linear Difference Equations Which are Solvable by Elementary Operations.
A characterization of locally compact fields II
A characterization of locally compact fields, III
A characterization of locally compact fields of zero characteristic
A Characterization of One-Element p-Bases of Rings of Constants
Let K be a unique factorization domain of characteristic p > 0, and let f ∈ K[x₁,...,xₙ] be a polynomial not lying in . We prove that is the ring of constants of a K-derivation of K[x₁,...,xₙ] if and only if all the partial derivatives of f are relatively prime. The proof is based on a generalization of Freudenburg’s lemma to the case of polynomials over a unique factorization domain of arbitrary characteristic.
A characterization of the spherically complete normed spaces with a distinguished basis
A class of hyperrings and hyperfields.
A complete parametriziation of cyclic field extensions of 2-power degree.
A Concept of Bernoulli Numbers in Algebraic Function Fields (II).
A Condition for a Polynomial Map to be Invertible.
A conjecture in the arithmetic theory of differential equations
A constructive Approach to Noether's Problem.
A continuous, constructive solution to Hilbert's 17th problem.
A counterexample to a conjecture of multinomial degree
A criterion for rational places over local fields.