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Is called enveloping of a curves family (C ) a curve CS which accomplish the conditions: for each point which belongs to the CS curve, is possible to find a unique curve from family which contain this point as ordinary point and which have in that point a contact of first order with CS; for each (C ) family's curve is possible to find an ordinary point of this curve which belongs to the CS curve too; nor of the (C ) family's curves don't have a common arc with the CS curve.

Produktbeschreibung
Is called enveloping of a curves family (C ) a curve CS which accomplish the conditions: for each point which belongs to the CS curve, is possible to find a unique curve from family which contain this point as ordinary point and which have in that point a contact of first order with CS; for each (C ) family's curve is possible to find an ordinary point of this curve which belongs to the CS curve too; nor of the (C ) family's curves don't have a common arc with the CS curve.
Autorenporträt
I was born in 26.06.1970 in Galati Romania. I study at Dunarea de Jos University of Galati, Faculty of Mechanics. I worked at Uzinsider Engineering as designer engineer. I am PhD in the Industrial Engineering domain and assistant professor at Dunarea de Jos University of Galati, Department of Manufacturing, Robotics and Welding Engineering.