Conjecture on semiperfect quasi-π\pi_\infty-regularity of finitely presented algebra extensions

Let SL ⁣T2S\in\mathscr{L}\!\mathscr{T}_2 be a semiperfect quasi-π\pi_\infty-regular ring, and let φ:SR\varphi:S\to R be a ring homomorphism. Regard RR as a right SS-module via φ\varphi, and let IS\mathcal{I}_S denote the relevant family of ideals. Assume that RR is finitely presented and Hausdorff as a right SS-module, and that for every rRr\in R and IISI\in\mathcal{I}_S there is JISJ\in\mathcal{I}_S such that

Rφ(J)rRφ(I).R\varphi(J)r\subseteq R\varphi(I).

Semiperfect quasi-π\pi_\infty-regularity conjecture. Then RR is semiperfect and quasi-π\pi_\infty-regular with respect to some topology. The condition on JJ ensures that the topology on RR generated by cosets of the left ideals Rφ(I)R\varphi(I) is a ring topology.

Sources & referencesView supporting material

Primary source

Uriya A. First, “Semi-Invariant Subrings”, arXiv:1212.2124 (2013).

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