If you mean the symbol â, it means âcontains as an elementâ. The expression Aâx is equivalent to xâA, which means that x is an element of A and implies that A is a set. See Element (mathematics).
Concrete Floor Care 101. Concrete flooring is one of the most durable types of flooring you can install in your homeânot to mention it adds an interesting design element that is both contemporary and uncommon. Itâs also easy to maintain if you follow a few simple guidelines.
Types of Laminate Floors. Today, there are several different types of laminate floors to choose from, as well as different shapes, thicknesses and installation locking systems. What they all have in common is they must be floated over the subfloor and have a print layer to give a realistic appearance of a real natural floor material. Laminate floors can be installed on all grade levels and over fully-cured concrete slabs, wood subfloors and some types of existing hard surfaces floors.