A counterexample to Köthe's conjecture and a question of Rowen

@misc{adamczewski2026counterexample,
  title = {{A counterexample to Köthe's conjecture and a question of Rowen}},
  author = {Tom Adamczewski and Bernhard Böhmler and Rene Marczinzik},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.07996},
  eprint = {2609.07996},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.07996},
}

TY  - UNPB
TI  - A counterexample to Köthe's conjecture and a question of Rowen
AU  - Tom Adamczewski
AU  - Bernhard Böhmler
AU  - Rene Marczinzik
PY  - 2026
DA  - 2026/09/07
PB  - arXiv
DO  - 10.48550/arxiv.2609.07996
UR  - https://arxiv.org/abs/2609.07996
AB  - We construct a counterexample to Köthe's conjecture and use this to also answer a question due to Rowen.
ER  -