A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

So, how do you trade during premarket hours? You start by: Ensure that the trade you wish to make is allowed by your broker Determine how many shares you want to buy or sell — using your budget as a ...

Abstract: Wireless sensor network (WSN) is a rapid surging technology promising many fruitful innovations for the user community. The use of WSNs for continuous monitoring of environmental factors in ...

Abstract: On a noncommutative ring with identity and characteristic not equal to 2, we consider the Jordan derivation of triangular algebra. Using module theory and direct sum decomposition, we obtain ...