Geodesic
Convex quadrics
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2010), pp. 94-106.

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We introduce and describe convex quadrics in Rn and characterize them as convex hypersurfaces with quadric sections by a continuous family of hyperplanes. 
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Valeriu Soltan. Convex quadrics. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2010), pp. 94-106. https://geodesic-test.mathdoc.fr/item/BASM_2010_3_a9/

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