id: 06089182
dt: j
an: 06089182
au: Recasens, J.
ti: Permutable indistinguishability operators, perfect vague groups and fuzzy
    subgroups.
so: Inf. Sci. 196, 129-142 (2012).
py: 2012
pu: Elsevier Science Inc. (North-Holland), New York, NY
la: EN
cc: 
ut: indistinguishability operators; permutability; fuzzy groups; fuzzy normal
    subgroups; vague groups
ci: 
li: doi:10.1016/j.ins.2012.02.005
ab: Summary: Permutability between $T$-indistinguishability operators is a very
    interesting property that is related to the compatibility of the
    operators with algebraic structures. It will be shown that the
    $\sup$-$T$ product $E\circ F$ of two $T$-indistinguishability operators
    is also a $T$-indistinguishability operator if and only if $E$ and $F$
    are permutable $T$-indistinguishability operators (i.e., $E\circ
    F=F\circ E$). This property will be related to the study of fuzzy
    subgroups, fuzzy normal subgroups and vague groups. The aggregation of
    fuzzy subgroups will also be analyzed.
rv: