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The concepts of neighbourly irregular bipolar fuzzy graphs, neighbourly
totally irregular bipolar fuzzy graphs, highly irregular bipolar fuzzy
graphs and highly totally irregular bipolar fuzzy graphs are introduced and
investigated. A necessary and sufficient condition under which neighbourly
irregular and highly irregular bipolar fuzzy graphs are equivalent is
discussed. The notion of bipolar fuzzy digraphs is introduced. The bipolar
fuzzy influence graph of a social group is also described.
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