描述Ningshu News October 1940 Zeng Jiongzhi died.jpg
English: News of Ningshu Region in Xikang Province, China in October 1940 reported by the journal Xin Ningyuan Yuekang (literally, New Ningyuan Monthly) published in Xichang, Xikang. It contains the news that Chinese mathematician Zeng Jiongzhi (name also spelt as Chiungtze C. Tsen) died on 1st October 1940. Modern biographies of Zeng incorrectly state that he died in November 1940. According to the previous issue of the journal published on 25th October, Zeng was one of the invited writers for the journal, but he died before he could provide any article.
This work is in the public domain in the United States because it meets three requirements:
it was first published outside the United States (and not published in the U.S. within 30 days),
it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
it was in the public domain in its home country (中国) on the URAA date (1 January 1996).