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-Receipt Doctrine Law and Legal Definition. The Doctrine of Constructive Receipt is a taxation principle that taxes income before that income is actually received. It says that that gross income under a taxpayer's control before it is actually received must be included by the taxpayer in gross income, unless the actual receipt is subject to significant constraints.