Update README.md

analysis/README.md

@@ -6,5 +6,5 @@ $d(p,q)=\sqrt{\sum_{i=1}^n(p_i-q_i)^2}$
 
 
 protein contact map represents the distance between all possible amino acid residue pairs of a three-dimensional protein structure using a binary two-dimensional matrix. For two residues 
-$𝑖{\displaystyle i}$ and 𝑗{\displaystyle j}, the 𝑖𝑗{\displaystyle ij} element of the matrix is 1 if the two residues are closer than a predetermined threshold, and 0 otherwise.
+${\displaystyle i}$ and ${\displaystyle j}$, the ${\displaystyle ij}$ element of the matrix is 1 if the two residues are closer than a predetermined threshold, and 0 otherwise.