wrong indentation

src/main.py

@@ -193,18 +193,17 @@ class Algorithms:
         return mv, x, r, total_time
 
     # Refers to Algorithm 2 in the paper, it's needed to implement the algorithm 4. It doesn't work yet. Refer to the file testing.ipynb for more details. This function down here is just a place holder for now
-def Arnoldi(A, v, m):
+    def Arnoldi(A, v, m):
         beta = norm(v)
         v = v/beta
         h = sp.sparse.lil_matrix((m,m))
-
         for j in range(m):
             w = A @ v
             for i in range(j):
                 tmp = v.T @ w
                 h[i,j] = tmp[0,0]
                 w = w - h[i,j]*v
-        h[j,j-1] = norm(w)
+            h[j,j-1] = norm(w)  # in the paper the index is referred as h[j+1,j] but since python starts from 0 it's h[j,j-1]
 
             if h[j,j-1] == 0:
                 print("Arnoldi breakdown")