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		| Nicolas Gabriel  Andjiga and Joël  Moulen | 
	
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		| ''Arrow's theorem for weak orders'' | 
	
		| ( 2009, Vol. 29 No.3 ) | 
	
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		| We characterize binary decision rules which are independent and strongly paretian,or independent and almost strongly paretian when the individual preferences and the collective preference are weak orders. | 
	
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		| Keywords: Binary decision rule,  lexicographic dictatorship | 
	
		| JEL: D7 - Analysis of Collective Decision-Making: General D7 - Social Choice
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		| | Manuscript Received : Jun 06 2009 |  | Manuscript Accepted : Aug 20 2009 | 
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