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Note that the deadline for the following application: "Ancient mathematics in secondary schools: issues, current practices and new perspectives" has been extended to September 16, 2013 (in English, in French).SAW launchesthree calls for applications related to PhD and/or post-doctoral positions.The topics of these calls are, respectively,- Mathematical practices in the context of astral sciences in ancient China- The history of mathematics in relation to astral sciences—ancient and medieval Indian sources- Ancient mathematics in secondary schools: issues, current practices and new perspectivesThe deadline for applications is: June 21, 2013. More information can be found in the following documents:Mathematical practices in the context of astral sciences in ancient China: in English, in FrenchThe history of mathematics in relation to astral sciences—ancient and medieval Indian sources: in English, in FrenchAncient mathematics in secondary schools: issues, current practices and new perspectives: : in English, in French. (deadline extended)