Recognition conjecture for generically highly transitive groups of finite Morley rank

Let (X,G)(X,G) be a permutation group of finite Morley rank, where GG acts transitively on XX. The action is generically nn-transitive if GG has an orbit on XnX^n whose complement has rank strictly less than rk(Xn)\operatorname{rk}(X^n). Assume that GG is connected and that

rkX=n.\operatorname{rk} X=n.

Recognition conjecture. If (X,G)(X,G) is transitive and generically (n+2)(n+2)-transitive, then (X,G)(X,G) is equivalent to

(Pn(K),PGLn+1(K))(\operatorname{\mathbb{P}}^{n}(K),\operatorname{PGL}_{n+1}(K))

for some algebraically closed field KK. This conjecture proposes a natural upper limit for generic transitivity in the finite Morley rank setting and characterizes the projective linear action as the extremal case. Its status is not determined by the supplied source material.

Sources & referencesView supporting material

Primary source

Tuna Altınel and Joshua Wiscons, “Recognizing PGL_3 via generic 4-transitivity”, arXiv:1505.08129 (2015).

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