We introduce and study in detail the notion of compatibility between valuations orderings real hyperfields. investigate their relation with induced on factor residue Much theory from fields can be generalized to hyperfields; we point out facts that cannot. generalize Baer-Krull theorem

a celebrated result of i. schur asserts that the derived subgroup of a group is finite provided the group modulo its center is finite, a result that has been the source of many investigations within the theory of groups. in this paper we exhibit a similar result to schur's theorem for vector spaces, acted upon by certain groups. the proof of this analogous result depends on the characteristic o...

Schur's theorem and its generalisation, Baer's theorem, are distinguished results in group theory, connecting the upper central quotients with lower series. The aim of this paper is to generalise these two different directions, using novel methods related non-abelian tensor product. In particular, we prove a version Schur–Baer for finitely generated groups. Then, apply newly obtained describe k...

The endomorphism ring of the group of all sequences of integers, the Baer-Specker group, is isomorphic to the ring of row finite infinite matrices over the integers. The product bases of that group are represented by the multiplicative group of invertible elements in that matrix ring. All products in the Baer-Specker group are characterized, and a lemma of László Fuchs regarding such products i...

In this work we attempt to generalize our result in [6] [7] for real rings (not just von Neumann regular real rings). In other words we attempt to characterize and construct real closure ∗ of commutative unitary rings that are real. We also make some very interesting and significant discoveries regarding maximal partial orderings of rings, Baer rings and essentail extension of rings. The first ...

It was conjectured that the smallest minimal point sets of PG(2s, q), q a square, that meet every s-subspace and that generate the whole space are Baer subgeometries PG(2s, √ q). This was shown in 1971 by Bruen for s = 1, and by Metsch and Storme [5] for s = 2. Our main interest in this paper is to prepare a possible proof of this conjecture by proving a strong theorem on line-blocking sets in ...