# Alfred Peris

Professor of Mathematics

IU de Matematica Pura i Aplicada, Universitat Politecnica de Valencia

Valencia, Spain

The two pieces presented here are based on the same idea: Pick a closed 2-dimensional curve, project it into a paraboloid of revolution to obtain a 3-dimensional curve. Then join each point of the curve with another one with a straight segment to get a ruled surface.

Triboid

18 x 17 x 17 cm

Resin

2015

It is a ruled surface: A 2D closed curve, a rose of 3 petals, is projected into a paraboloid of revolution to obtain a 3D curve. Each point of the curve is with another point of the same curve with a straight segment. This process generates the ruled surface.