You do not have full access to this article.
Already a Subscriber? Sign in as an individual or via your institution
Journal Article Details
Publisher Name: Global Science Press
Language: Chinese
DOI: https://doi.org/2019-MC-13547
数学文化, Vol. 10 (2019), Iss. 4 : pp. 46–48
Published online: 2019-01
AMS Subject Headings:
Copyright: COPYRIGHT: © Global Science Press
Pages: 3