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.
The three main types of solid wood flooring are: Strip flooring - This type of flooring is denoted by the thickness and width of the wood planks. Strip flooring has a set width, but the thickness can vary. Strip flooring ranges in thickness from 5/16 of an inch to 3/4 of an inch wide.