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Lectures on Convex Sets (Hardcover)

Compact Convex Sets and Boundary Integrals (Paperback)

Topologies on Closed and Closed Convex Sets (Paperback)

Topologies on Closed and Closed Convex Sets

Art Deco diamond panel ring, by Lacloche Freres, designed as a pavé -set baguette-cut diamond convex cut-cornered rectangular panel trimmed with small single-cut diamonds and set to the centre with a single-brilliant-cut diamond collet,mounted in platinum, numbered

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A ROMAN CARNELIAN RING STONE. CIRCA 2ND CENTURY A.D. The convex oval stone engraved with Fortuna, the draped goddess standing on a short groundline, supporting a cornucopia in her right arm, a branch and a ship's rudder in her left; mounted as a ring in a modern gold setting

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Gold, blue crystal and diamond ring. 18th century The oval bezel is centering an important cluster of diamond set in silver on a lapis blue convex crystal ground. These rings were ceremonial rings in use at the court. French, late 18th century.

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ENAMEL AND GOLD SEWING SET WITH CASE, France, ca. 1820.Gold and silverSlightly convex case with damascene ornamentation in pink gold. Inside, 4 sewing tools...

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PROPERTY FROM THE COLLECTION OF EUGENE V. THAW: A JEWELED SILVER AND NEPHRITE MAGNIFYING GLASS BY FABERGÉ, WORKMASTER MICHAEL PERCHIN, ST. PETERSBURG, CIRCA 1890. Circular, the side of the silver mount cast and chased with a continuous guilloché pattern, the edges cast and chased with egg and dart motif, enclosing a convex glass, the upper part of the handle applied with intertwining snakes with diamond set eyes, the heads set with yellow diamonds, with tapering nephrite cylindrical lower…

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15" Antiqued Blue Round Convex Wall Mirror Set