skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Search for: All records

Creators/Authors contains: "Mei, Tao"

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. Free, publicly-accessible full text available June 1, 2026
  2. This article studies the properties of positive definite, radial functions on free groups following the work of Haagerup and Knudby [Proc. Amer. Math. Soc. 143 (2015), pp. 1477–1489]. We obtain characterizations of radial functions with respect to the ℓ<#comment/> 2 \ell ^{2} length on the free groups with infinite generators and the characterization of the positive definite, radial functions with respect to the ℓ<#comment/> p \ell ^{p} length on the free real line with infinite generators for 0 > p ≤<#comment/> 2 0 > p \leq 2 . We obtain a Lévy-Khintchine formula for length-radial conditionally negative functions as well. 
    more » « less
  3. null (Ed.)