Institution: | 1.Kurt G?del Research Center for Mathematical Logic, W?hringer Stra?e, 25, 1090, Vienna, Austria ;2.Mathematical Reviews, 416 Fourth Street, Ann Arbor, MI, 48103-4820, USA ;3.Mathematics, The Graduate Center of The City University of New York, 365 Fifth Avenue, New York, NY, 10016, USA ;4.Mathematics, College of Staten Island of CUNY, 2800 Victory Blvd., Staten Island, NY, 10314, USA ;5.Mathematics, Philosophy, Computer Science, The Graduate Center of The City University of New York, 365 Fifth Avenue, New York, NY, 10016, USA ;7.Mathematics, New York City College of Technology of The City University of New York, 300 Jay Street, Brooklyn, NY, 11201, USA ;8.Institut für mathematische Logik und Grundlagenforschung Fachbereich Mathematik und Informatik, Universit?t Münster, Einsteinstra?e 62, 48149, Münster, Germany ; |