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Simultaneously, we discussed the relationship between semicontinuous and preinvex fuzzy number-valued functions, and some properties among invexity and generalized invexity of n-dimensional fuzzy number-valued functions. Finally, we studied the necessary and sufficient conditions for weakly efficient point of fuzzy optimization.\n                  <\/jats:p>","DOI":"10.3233\/jifs-190370","type":"journal-article","created":{"date-parts":[[2019,10,11]],"date-time":"2019-10-11T15:45:58Z","timestamp":1570808758000},"page":"1889-1900","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Generalized convexity of n-dimensional fuzzy number-valued functions and its application in fuzzy optimization"],"prefix":"10.1177","volume":"38","author":[{"given":"Zezhong","family":"Wu","sequence":"first","affiliation":[{"name":"School of Applied Mathematics, Chengdu University of Information Technology, Chengdu, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fei","family":"Song","sequence":"additional","affiliation":[{"name":"School of Applied Mathematics, Chengdu University of Information Technology, Chengdu, 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