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【期刊论文】Characterizations of Minimal T 3 1/2 L-Topological Spaces
李生刚, SHENG-GANG LI
Computers and Mathematies with Appications 47(2004)1739-1743,-0001,():
-1年11月30日
For L a closed sets lattice, we prove the existence and a characterization theorem of the minimal elements of T 3LX, where T 3
Fuzzy topology,, Closed sets L-topology,, T3
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【期刊论文】Inverse limits in category LTop (II) 1
李生刚, Sheng-Gang Li
Fuzzy Sets and Systems 109(2000)291-299,-0001,():
-1年11月30日
This paper is a sequel to Li (1999). For some classes F of L-valued Zadeh functions, we will discuss two problems connected with inverse limits in LTop, K1HLTop and K2HLTop: (1) Will the condition that all L-valued Zadeh functions between factor L-fts of two given inverse systems are in F imply that the induced limit LTop-morphism is in F? (2) Will the condition that all bonding L-valued Zadeh functions are in F imply that all projective L-valued Zadeh functions are in F?
Fuzzy topology, Inverse limit, Projective L-valued Zadeh-function, Mapping between inverse systems, Limit LTop-morphism.,
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【期刊论文】On two weaker forms of continuous order-homomorphisms 1
李生刚, Sheng-Gang Li
Fuzzy Sets and Systems 101(1999)469-475,-0001,():
-1年11月30日
The aim of this paper is to find further connections between two different current researches on fuzzy topology: the one based on the concepts of neighborhood, filter and Zadeh function, and the other based on the concepts of remote neighborhood, ideal and order-homomorphism on fuzzy lattices. To approach this, the paper studies two weaker forms of continuous order-homomorphisms, the semi-continuous order-homomorphism and the weakly semi-continuous order-homomorphism between L-fuzzy topological spaces. These order-homomorphisms can be characterized in each of the notions: remote-neighborhood, neighborhood, ideal, filter and molecular net. In addition, some relations connecting weakly semi-continuous order-homomorphisms, semi-Hausdorff L-fts and Urysohn L-fts have also been established.
L-fuzzy topology, Semi-continuous order-homomorphism, Weakly semi-continuous order-homomorphism, Retraction
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【期刊论文】Local connectedness in L-topological spaces
李生刚, Sheng-Gang Li∗
Fuzzy Sets and Systems 133(2003)363-373,-0001,():
-1年11月30日
This paper studies local strong F1 connectedness and local Q-connectedness of L-topological spaces. It is shown that every L-interval J (L) and its weak induci.cation J(L) are both local strong F1 connected andlocal Q-connected, and that the local Q-connectedness of an L-topological space is equivalent to that of its induced I (L)-topological space.
L-topological space, Local strong F1 connectedness, Local Q-connectedness, L-interval, Induced I (, L), -topological space
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【期刊论文】Connectedness in L-fuzzy topological spaces
李生刚, Sheng-Gang Li
Fuzzy Sets and Systems 116(2000)361-368,-0001,():
-1年11月30日
Based on the consideration to the layer structures of fuzzy lattices and the level topologies of L-fuzzy topological spaces, a connectedness is dened for an arbitrary L-fuzzy set in this paper. This denition reects the degree of connectivity of an L-fuzzy set. It is shown that the connectedness of L-fuzzy topological spaces is an L-good extension, multiplicative and preserved under continuous L-valued Zadeh functions, and that the inverse limit of continuums is a continuum. General L-fuzzy intervals and H-intervals are dened and connectedness of them are proved. It is also shown that the connectedness of an L-fuzzy topological space is equivalent to the connectedness of its induced I (L)-fuzzy topological space.
Fuzzy topology, Connectedness, Inverse limit, L-fuzzy continuum, L-fuzzy interval, H-interval, Induced I (, L), -fuzzy topological space
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