Work

Higher Kazhdan projections and delocalized ℓ2‐Betti numbers for an amalgamated product group

Year: 2026

Type: article

Abstract: We establish explicit expressions for the ‐theory classes of higher Kazhdan projections for amalgamated product groups . Our approach follows the methodology developed by Pooya and Wang for free product groups , and naturally generalizes their results on free products. As an application of the ‐class expressions, we obtain nonvanishing results for delocalized ‐Betti numbers of .

Source: Bulletin of the London Mathematical Society

Author: Baiying Ren

Institution: East China Normal University

Language: English

Topic: Advanced Operator Algebra Research

Subfield: Mathematical Physics

Field: Mathematics

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Science and Technology Commission of Shanghai Municipality, China Scholarship Council

Awards: G5542261770, 高指标理论中的不变量, G8295120120

OpenAlex ID: W7134840563

FWCI:

Cites: 12

Cited by:

Related to: