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.
Differences in Engineered Wood Flooring. Many types of engineered hardwood floors can be floated or glued down. In this way, installation is easier for the do-it-yourself consumer. The top layer is already sanded and sealed. Therefore, once this flooring is installed, it can be walked on and used immediately.