Depression is a common complaint early on in smoking cessation. Lack of nicotine and the loss of the companion that we thought helped us manage everything from anger to fatigue leaves most new ex-smokers feeling empty and adrift for a time. Quitting smoking can be very challenging at times, and is difficult enough when you're feeling happy.
Definition of tessera plural tesserae play \-ËrÄ,-ËrÄ« \ 1: a small tablet (as of wood, bone, or ivory) used by the ancient Romans as a ticket, tally, voucher, or means of identification 2: a small piece (as of marble, glass, or tile) used in mosaic work
A tessellation of the plane is an arrangement of polygons which cover the plane without gaps or overlapping. For example, part of a tessellation with rectangles is pictured below: A tessellation is called regular if all polygons in the tessellation are congruent regular polygons and if any two polygons in the tessellation either do not meet, share a vertex only, or share one edge.