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We show that a minimal nonalgebraic simple groups of finite Morley rank has Prufer rank at most 2, and eliminates tameness from Cherlin and Jaligot's past work on minimal simple groups. The argument given here begins with the strongly…

Group Theory · Mathematics 2007-11-28 Jeffrey Burdges , Gregory Cherlin , Eric Jaligot

We prove that in a connected group of finite Morley rank the centralizers of decent tori are connected. We then apply this result to the analysis of minimal connected simple groups of finite Morley rank. Our applications include general…

Logic · Mathematics 2014-02-26 Tuna Altinel , Jeffrey Burdges

The paper contains versions of the Strong Embedding Theorem and the Uniqueness Subgroup Theorem for groups of finite Morley rank and odd type which are needed for the study of permutations actions and modules in the finite Morley rank…

Group Theory · Mathematics 2011-12-01 Alexandre Borovik , Jeffrey Burdges , Ali Nesin

We deal with two forms of the "uniqueness cases" in the classification of large simple $K^*$-groups of finite Morley rank of odd type, where large means the $m_2(G)$ at least three. This substantially extends results known for even larger…

Group Theory · Mathematics 2008-11-10 Jeffrey Burdges , Gregory Cherlin

We show that a minimal counter example to the Cherlin-Zilber Algebraicity Conjecture for simple groups of finite Morley rank has normal 2-rank at most two, which is a tameness free version of Borovik's original trichotomy theorem. This…

Group Theory · Mathematics 2007-11-28 Alexandre Borovik , Jeffrey Burdges

We lay down the fundations of the theory of groups of finite Morley rank in which local subgroups are solvable and we proceed to the local analysis of these groups. We prove the main Uniqueness Theorem, analogous to the Bender method in…

Group Theory · Mathematics 2008-03-27 Adrien Deloro , Eric Jaligot

We show that a non-algebraic simple group of finite Morley rank with a definable representation over a field has no involutions, and otherwise resembles a bad group. In particular, the modern form of the Cherlin-Zilber alebaricity…

Logic · Mathematics 2008-11-15 Alexandre Borovik , Jeffrey Burdges

We consider groups of finite Morley rank with solvable local subgroups of even and mixed types. We also consider miscellaneous aspects of small groups of finite Morley rank of odd type.

Group Theory · Mathematics 2008-09-15 Adrien Deloro , Eric Jaligot

This article proves a version of the Feit-Thompson theorem for simple groups of finite Morley rank: a connected groups of finite Morley rank with a finite Sylow 2-subgroup has a trivial Sylow 2-subgroups.

Logic · Mathematics 2007-11-28 Alexandre Borovik , Jeffrey Burdges , Gregory Cherlin

In this paper we prove that any strongly embedded subgroup of a K*-group G of finite Morley rank and odd type that does not interpret any bad field is solvable if its Pruefer 2-rank is at least 2. If the normal 2-rank of G is at least 3…

Group Theory · Mathematics 2007-05-23 Christine Altseimer

Several structural results about permutation groups of finite rank definable in differentially closed fields of characteristic zero (and other similar theories) are obtained. In particular, it is shown that every finite rank definably…

Logic · Mathematics 2024-12-17 James Freitag , Léo Jimenez , Rahim Moosa

We show that a minimal counter example to the Cherlin-Zilber Algebraicity Conjecture for simple groups of finite Morley rank has Prufer 2-rank at most two. This article covers the signalizer functor theory and identifies the groups of Lie…

Logic · Mathematics 2008-11-28 Jeffrey Burdges

Let $G$ be an infinite simple group of finite Morley rank and of Pr\"{u}fer $2$-rank $1$ which admits a supertight automorphism $\alpha$ such that the fixed-point subgroup $C_G(\alpha^n)$ is pseudofinite for all integers $n > 0$. We prove…

Group Theory · Mathematics 2023-09-22 Ulla Karhumäki , Pınar Uğurlu

We examine Weyl groups of minimal connected simple groups of finite Morley rank of degenerate type. We show that they are cyclic, and lift isomorphically to subgroups of the ambient group.

Group Theory · Mathematics 2009-04-21 Jeffrey Burdges , Adrien Deloro

We prove a Jordan decomposition theorem for minimal connected simple groups of finite Morley rank with non-trivial Weyl group. From this, we deduce a precise structural description of Borel subgroups of this family of simple groups. Along…

Logic · Mathematics 2010-09-17 Tuna Altinel , Jeffrey Burdges , Oliver Frecon

We clarify quasi-Frobenius configurations of finite Morley rank. 1. We remove one assumption in an identification theorem by Zamour while simplifying the proof. 2. We show that a strongly embedded quasi-Frobenius configuration of odd type,…

Logic · Mathematics 2023-05-02 Tuna Altinel , Luis Jaime Corredor , Adrien Deloro

Using a new definition of rank for representations of semisimple groups sharp results are proved for the decay of matrix coefficients of unitary representations of two types of non-split $p$-adic simple algebraic groups of exceptional type.…

Representation Theory · Mathematics 2007-05-23 Hadi Salmasian

The present survey aims at being a list of Conjectures and Problems in an area of model-theoretic algebra wide open for research, not a list of known results. To keep the text compact, it focuses on structures of finite Morley rank,…

Logic · Mathematics 2019-09-09 Alexandre Borovik , Adrien Deloro

By exploiting the geometry of involutions in $N_\circ^\circ$-groups of finite Morley rank, we show that any simple group of Morley rank $5$ is a bad group all of whose proper definable connected subgroups are nilpotent of rank at most $2$.…

Logic · Mathematics 2017-07-10 Adrien Deloro , Joshua Wiscons

This paper develops some general results about actions of finite groups on (infinite) abelian groups in the finite Morley rank category. They are linked to a range of problems on groups of finite Morley rank discussed in [16]. Crucially,…

Group Theory · Mathematics 2024-07-24 Alexandre Borovik
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