<math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <msub> <mrow> <mi>M</mi> </mrow> <mrow> <mi>v</mi> <mi>e</mi> </mrow> </msub> </math>—Polynomial of Cog-Special Graphs and Types of Fan Graphs
International journal of mathematics and mathematical sciences