New York CPR 1101(a) is a law that determines the jurisdiction of the courts in the state of New York. It states that the courts of the state have jurisdiction over any action or proceeding that arises within the state or is brought to enforce a cause of action that arose within the state, regardless of the residence of the parties. There are two types of New York CPR 1101(a): general jurisdiction and specific jurisdiction. General jurisdiction allows the courts to hear any action or proceeding that arises in New York, regardless of the residence of the parties. Specific jurisdiction restricts the court's jurisdiction to certain types of cases, such as those involving real property, family law, or those that arise from contracts made within the state.