Mathematical Sciences: The Geometry and Topology of Free    Group Automorphisms
{'Code': '03040200', 'Directorate': {'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'LongName': 'Division Of Mathematical Sciences'}}
{'SignBlockName': 'Ralph M. Krause'}
Although it is customary for geometry and topology to                      benefit from the application of algebraic methods, it is                        increasingly true that ideas find application in the other                      direction as well.  Professor Cohen is one of a growing cohort of               mathematicians investigating group theory with much of the                      inspiration derived from geometry and topology.  He will continue               work on the dynamics of free group automorphisms, with questions                concerning the fixed subgroup as one of the intended realms of                  application.  In addition, the question of whether a certain                    "Teichmuller space" for the outer automorphism group is simply                  connected at infinity will be investigated.  Finally (with lowest               priority) a question about free products modulo a single relator                will be studied.
{'FirstName': 'Marshall', 'LastName': 'Cohen', 'EmailAddress': None, 'StartDate': '07/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Cornell University', 'CityName': 'Ithaca', 'ZipCode': '148502820', 'PhoneNumber': '6072555014', 'StreetAddress': '373 Pine Tree Road', 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY'}
{'Code': '1267', 'Text': 'TOPOLOGY'}
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