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...Determinants of certain classes zero one matrices with equal line sums chi kwong li department mathematics college william and mary williamsburg va ckli math wm edu julia shih jung lin university california santa barbara ca ulins mcl ucsb leiba rodman lxrodm abstract westudythepossible determinant values various n matri ces xed row column some new results open problems conjectures are presented keywords matrix amssubject classication b a introduction let k be positive integers denote by s the set to there has been considerable interest in studying its subsets this is motivated among other things many interesting connections graph theory combinatorics designs congurations so far research area focused on minimal value see e g maximal for partially supported nsf grant dms was carried out during experience undergraduates sponsored at summer current address rains hausing c stanford jujulin leland also books main focus present paper describe cases complete determinantal we consider subset sy...