A reconsideration of Hua's inequality
© Takagi et al. 2005
Received: 11 July 2004
Published: 1 February 2005
The inequality discovered by L. K. Hua in 1965 has been generalized in several directions. In this paper, we adopt a certain conjugate method to give a simple and fundamental inequality on two functions on a semigroup, which is the key to the proof of many generalizations of Hua's inequality.