Lower and Upper Approximations in Hv- groups
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R. Biswas and S. Nanda, Rough groups and rough subgroups, Bell. Polish Acad. Sci, Math., 42 (1994) 251-254.
Z. Bonikowa,ski, Algebraic structures of rough seta, in W.P. Ziarko Editor, Rough sets, Fuzzy sets and Knowledge Discovery, Springer-Verlag, Berlin, (1995) 242-247.
P. Corsini, Prolegomena of hypergroup theory, Second edition, Aviani edi-tor, (1993).
B. Davvaz, Fuzzy 1-4,-groups, Fuzzy sets and systems, 101 (1999) 191-195,
B. Davvaz, On Hu-subgroups and anti fuzzy Hu-subgnmps, Korean J_ Corn-put. & Appl. Math., 5 (1998) 181-190.
B. Davvaz, Weak Polygmups, Proc. of the 28th Annual Iranian Math. Conferance, (1997) 28-31.
M. Gehrke and E.Walker, On the structure of rough sets, Bull. Polish Acad. Sci. Math., 40 (1992) 235-245.
T. iwinski, Algebraic approach to rough sets, Bull. Polish Acad. Sci. Math., 35 (1987) 673-683.
N. Kuroki and P.P. Wang, The lower and upper approximation in a fuzzy group, Information Science, 90 (1996) 203-220.
F. Marty, Sur une generalization de to notion de group, 8th Congrecs Math. Scandenaves, Stockholm, (1934) 45-49.
Z Pawlak, Rough sets, Int. 1 Inf. Comp. Sci., 11 (1982) 341-356.
J. Pomykala and J.A. Pomykala, The stone algebra of rough sets, Bull. Polish Acad. Sci. Math., 36 (1988) 495-508.
T.Vougiouklis, Hyperstractures and their representations, Hadroriic Press, Inc., Florida, (1994).
T. Vougiouklis, A new class of hyperstructures, J. Combin. inform. System Sciences, 20 (1995) 229-235.
T. Vougiouklis, Convolutions on WASS hyperstructures, Discrete Math., 174 (1997) 337-355.
T. Vougiouklis, The fundamental relation in hyperrings. The general hy-perfield, Proc.of the 4th Int. Congress on Algebraic Hyperstructures and Appi. (A.H.A 1990), Xanthi, Greece, World Sientific, (1991) 203-211.
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