An unusual decomposition of a complete 7-partite graph of order 28

dynamic coloring of graph

در این پایان نامه رنگ آمیزی دینامیکی یک گراف را بیان و مطالعه می کنیم. یک –kرنگ آمیزی سره ی رأسی گراف g را رنگ آمیزی دینامیکی می نامند اگر در همسایه های هر رأس v?v(g) با درجه ی حداقل 2، حداقل 2 رنگ متفاوت ظاهر شوند. کوچکترین عدد صحیح k، به طوری که g دارای –kرنگ آمیزی دینامیکی باشد را عدد رنگی دینامیکی g می نامند و آنرا با نماد ?_2 (g) نمایش می دهند. مونت گمری حدس زده است که تمام گراف های منتظم ...

Unusual Complete Isolated Scaphoid Dislocation, Report of a Case

Isolated scaphoid dislocations are extremely rare injuries and are commonly associated with significant ligamentousdisruptions. A dorsiflexion-supination force upon the hand is considered as the most common mechanism of injury.Different treatment options have been proposed for the management of this uncommon entity, ranging from conservativetreatment with closed reduction and casting to a wide ...

Graph decomposition is NPC - A complete proof

A note on the order graph of a group

 The order graph of a group $G$, denoted by $Gamma^*(G)$, is a graph whose vertices are subgroups of $G$ and two distinct vertices $H$ and $K$ are adjacent if and only if $|H|big{|}|K|$ or $|K|big{|}|H|$. In this paper, we study the connectivity and diameter of this  graph. Also we give a relation between the order graph and prime  graph of a group.

Abdominal Splenosis: An Unusual Cause of Bowel Obstruction in a 7-Year-Old Child

Splenosis is a rare condition defined as a heterotopic auto-transplantation of splenic tissue, typically after blunt abdominal trauma. It can occur anywhere in the abdominal cavity, or even the chest. Splenosis found in clinical practice is relatively rare because most patients are asymptomatic. We report a rare case of abdominal splenosis in a 7-year-old boy, 3 years after an abdominal blunt t...