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English
Etymology
From sub- + proper.
Adjective
subproper (not comparable)
- (mathematics) Having some of the key characteristics of the proper property (which ones depend on the type of proper property).
1987, Journal of the Optical Society of America, page 1795:An object can have several subproper centers or none at all. Figure 2 shows the proper center and some subproper centers for the letter E.
1988, Reviews in Global Analysis, 1980-86, page 344:The author establishes some basic properties and two surjectivity theorems for subproper operators.
2016, Shou Lin, Ziqiu Yun, Generalized Metric Spaces and Mappings, page 101:Obviously, each perfect mapping is a proper mapping, each proper mapping is a subproper mapping and each subproper mapping is a compact-covering mapping.