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Implications over intuitionistic fuzzy sets

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For the various definitions of implication of over intuitionistic fuzzy sets, the functions sg(x) and sg(x) have been used:

[math]\displaystyle{ \text{sg}(x) = \left \{ \begin{array}{c c} 1 & \text{if } x \gt 0 \\ 0 & \text{if } x \leq 0 \end{array}, }[/math]   [math]\displaystyle{ \overline{\text{sg}}(x) = \left \{ \begin{array}{c c} 1 & \text{if } x \lt 0 \\ 0 & \text{if } x \geq 0 \end{array}. }[/math]

ρ== List of intuitionistic fuzzy implications ==

No. Ref. Year Implication
1 {<x, max(νA(x),min(μA(x),μB(x))), min(μA(x),νB(x))>|x ∈ E}
2 {<x, sgA(x)-μB(x)), νB(x).sg(μA(x)-μB(x))>|x ∈ E}
3 {<x, 1-(1-μ(x)).sg(μA(x)-μB(x)), νB.sg(μA(x)-μB(x)) >|x ∈ E}
4 {<x, max(νA(x),μB(x)), min(μA(x),νB(x))>|x ∈ E}
5 {<x, min(1,νA(x)+μB(x)), max(0,μA(x)+νB(x)-1>|x ∈ E}


Alternative separated view

References

See also

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