fix bug

projection.sage

@@ -30,9 +30,8 @@ def cogirthip(bases, integral=true):
 
 cnt=0   # actual number of instances tested
 f = lambda g: g.is_connected()
-for n in range(4,5):
+for n in range(4,20):
     for g in filter(f, graphs(n)):
-        g=graphs.CompleteGraph(4)
         A=g.incidence_matrix()
         n,m = A.dimensions()
         # enumerate all vectors in F_2^n with even number of 1s
@@ -50,6 +49,6 @@ for n in range(4,5):
             if gap > 2.01:
                 print(f"bad example! gap={gap}")
                 with open("projection.out", "a") as f:
-                    f.write(str(A_t)+"\n\n")
+                    f.write(str(gap)+"\n"+str(A_t)+"\n")
             else:
                 print(f"n={n},m={m},gap={gap}")