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In my lecture this year, I developed the relationship between the " Differential Geometry " and " Algebraic Geometry " aspects of non-commutative geometry, building on my collaboration with M. Dubois-Violette in which we classified non-commutative spheres …

This year's lecture was devoted to variations in processes that influence climate and whose causes are linked to phenomena outside the earth. Particular attention was paid to solar variability, from recent decades to several millennia. After reviewing …

As observed above, the internationalization of law appears to be unpredictable and uncontrollable. From the traditional legal order identified with the nation-state, to the regional or global order under construction, the elaboration of an "ordered …