A Constitution bench headed by Justice DY Chandrachud will hear four important cases on Wednesday - the dispute between Uddhav Thackeray and Eknath Shinde factions of Shiv Sena, the case on Citizenship Act of 1955, the dispute between Delhi government and Union government on which government has administrative control over the transfers and postings of officers in Delhi and the validity of reservations for Anglo-Indians, Scheduled Castes and Scheduled Tribes in parliament and State assemblies.