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            | Abstract |  
            | By arithmeticity and superrigidity, a commensurability class of lattices in a higher
 rank Lie group is defined by a unique algebraic group over a unique number subfield
 of 
 or
 
. We
 prove an adelic version of superrigidity which implies that two such commensurability
 classes define the same profinite commensurability class if and only if the algebraic
 groups are adelically isomorphic. We discuss noteworthy consequences on profinite
 rigidity questions.
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            | Keywords
                profinite rigidity, arithmeticity, superrigidity
               |  
          
            | Mathematical Subject Classification
                Primary: 20E18, 22E40
               |  
          
            | Milestones
                Received: 19 February 2021
               
                Revised: 21 June 2021
               
                Accepted: 22 June 2021
               
                Published: 17 September 2021
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