If you look at a completed tessellation, you will see the original motif repeats in a pattern. One mathematical idea that can be emphasized through tessellations is symmetry. There are 17 possible ways that a pattern can be used to tile a flat surface or 'wallpaper'.
Related to liquidity: Liquidity ratio, Liquidity risk Liquidity In context of securities, a high level of trading activity, allowing buying and selling with minimum price disturbance.
There are three primary liquidity ratios that credit analysts and investors use to begin an in-depth financial analysis of a company. They are the current, quick and cash ratios. All three measure a company's ability to meet its short-term obligations based on the liquid assets it currently has on hand.