Arlington County has an extensive network of bicycle infrastructure, including 50 miles of shared-use off-street trails. These multi-use trails are generally 10 feet wide with a solid yellow line striped down the middle to separate users.
Constructive mathematics. Idea. Broadly speaking, constructive mathematics is mathematics done without the principle of excluded middle (or other principles, such as the full axiom of choice, that imply it).
Constructive Interference Definition. When two waves of same phase difference or constant phase difference superimpose at some points, where the crust of one wave falls on the crust of the other, a resultant maximum amplitude is obtained. This is called Constructive Wave Interference.