@inbook{7e961639fb8d4afe8e443cbdc0d65fb7,

title = "Star exponential functions as two-valued elements",

abstract = "We propose a relatively new notion of two-valued elements, which arise naturally in constructing star exponential functions of the quadratics in the Weyl algebra over the complex number. This notion enables us to describe group-like objects of the set of star exponential functions of quadratics in the Weyl algebra.",

author = "Y. Maeda and N. Miyazaki and H. Omori and A. Yoshioka",

note = "Funding Information: ∗This research was partially supported by Grants-in-Aid for Scientific Research 15204005 (first author), 15740045 (second author), 14540092 (third author), and 15540094 (fourth author) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. Publisher Copyright: {\textcopyright} 2005, Springer Basel. All rights reserved.",

year = "2005",

doi = "10.1007/0-8176-4419-9_16",

language = "English",

series = "Progress in Mathematics",

publisher = "Springer Basel",

pages = "483--492",

booktitle = "Progress in Mathematics",

}