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.
Cost Breakdown. Cost to install a hardwood floor will normally include: Materials -- Popular kinds of wood flooring include Brazilian cherry, hickory, maple, red oak, and white ash.If sub-flooring replacement is necessary, this will add to the cost.Supplies -- The flooring contractor will supply equipment and supplies such as a level, staple gun, and adhesive, as well as protective gear.aterials -- Popular kinds of wood flooring include Brazilian cherry, hickory, maple, red oak, and white ash. If sub-flooring replacement is necessary, this will add to the cost. Supplies -- The flooring contractor will supply equipment and supplies such as a level, staple gun, and adhesive, as well as protective gear.