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How to merge opinions by using operations between sequences of orthopairs

Orthopairs are, analogously to rough sets, a mathematical tool for dealing with uncertainty. Sequences of orthopairs also take into account the possibility to deal with a refinement process of information and with missing information. After recalling the main definitions, we present different operations of conjunction between sequences of orthopairs. We further present an example in which, having available non complete information about applicants for a job, two examiners evaluate them in order to find the better candidates and then their opinions are merged into an individual result.