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 Hardwood Flooring. Solid Hardwood Floors-are a solid piece of hardwood cut into wood planks that are generally 3/4 thick. (Above ground level areas only, not recommended for concrete slabs.). Engineered Hardwood Floors-are several plies of wood that a glued and laminated together to form a wood plank.