Zhang's Question on Howson and Strongly Howson Groups
A group is Howson if the intersection of any two finitely generated subgroups is finitely generated, and strongly Howson if the rank of that intersection is bounded in terms of the two ranks. Zhang asked whether the two coincide for finitely generated groups. They do not.
Exact FrontierDelta
Scope and record
Occurred: May 29, 2026
Delta type: SOURCE CLAIM
Assumptions: VibeMathed verification: unreviewed. Publication: preprint. AI contribution: ai-co-developed. Imported under CC BY 4.0.
Canonical aliases: Zhang's Question on Howson and Strongly Howson Groups · Howson groups
Confidence: Not scored
Registry verification: unreviewed · preprint · resolved
Attribution
VibeMathed
registry · event recorded by
Ke Wang
human · human collaborator
Qiang Zhang
human · human collaborator
ChatGPT
model · ai model contributor · OpenAI
Lineage and corrections
This event attributed to Qiang Zhang
This event attributed to Ke Wang
This event attributed to ChatGPT