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» Pseudocomplements of closure operators on posets
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DM
2002
101views more  DM 2002»
13 years 10 months ago
Pseudocomplements of closure operators on posets
Some recent results provide su cient conditions for complete lattices of closure operators on complete lattices, ordered pointwise, to be pseudocomplemented. This paper gives resu...
Francesco Ranzato
RSCTC
1998
Springer
129views Fuzzy Logic» more  RSCTC 1998»
14 years 3 months ago
On Generalizing Pawlak Approximation Operators
This paper reviews and discusses generalizations of Pawlak rough set approximation operators in mathematical systems, such as topological spaces, closure systems, lattices, and pos...
Y. Y. Yao
SOFSEM
1998
Springer
14 years 3 months ago
Some Results on the Modelling of Spatial Data
Abstract. Formal methods based on the mathematical theory of partially ordered sets (i.e., posets) have been used in the database field for the modelling of spatial data since many...
Luca Forlizzi, Enrico Nardelli