504
Paragraph 1 - Ground a: Invalidity of the arbitration agreement - Agreement referred to in Art. II
507
Invalidity of the arbitration agreement: The court discusses other cases of invalidity of the arbitration agreement, including that there was no agreement at all or that the party was not a signatory thereto, that the incorrect arbitral institution was chosen, etc.
Miscellaneous cases regarding the arbitration agreement
509
Due process: The court discusses what constitutes “proper notice” of the appointment of the arbitrators or of the arbitration proceedings.
"Proper notice"
522
Public policy: The court discusses the consequences of the lack of reasons in the award on its recognition and enforcement.