Publications and preprints

My arXiv page is here.


  • Alan D. Logan, The outer automorphism groups of two-generator one-relator groups with torsion Proceedings of the American Mathematical Society, 144 (2016) no.10, 4135-4150. (arXiv)

  • Alan D. Logan, The JSJ-decompositions of one-relator groups with torsion Geometriae Dedicata 180 (2016) no.1, 171-185. (arXiv)

  • Alan D. Logan, On the outer automorphism groups of finitely generated, residually finite groups Journal of Algebra 423 (2015) no.1, 890-901. (arXiv)

  • Alan D. Logan, On a question of Bumagin and Wise New York Journal of Mathematics 22 (2016) 865-873. (arXiv) (NYJM, open access)


  • Alan D. Logan, The Bass-Jiang group for automorphism-induced HNN-extensions, submitted. (arXiv)

In preparation

  • Alan D. Logan, Every group is the outer automorphism group of an HNN-extension of a fixed triangle group (in preparation).

  • Firat Ates, Alan D. Logan & Stephen J. Pride, Automata and Zappa-Szep products of groups (in preparation).