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).
Pros and Cons of Different Types of Flooring. By: Danny Lipford. There are a number of different options available when choosing flooring for your home, including carpet, tile, hardwood, and laminate. Here are some of the advantages and disadvantages of each type of flooring.
Polyurethane Wood Floors. The most popular wood floor surface is polyurethane. Polyurethane is the only floor finish that can be used just about anywhere. The three main types of polyurethane used on hardwood floors are; oil modified, water based and moisture cured. Oil modified polyurethane is often applied over oil based stains.