Details for entry \(A_9(7,4)\)

Lower bounds

• improved_cdc_lower_bound ( ) : 43112404
• layer_construction ( ) : 43112404
• cdc_lower_bound ( ) : 43112403
• echelon_ferrers ( show
  optimal [(0, 1, 2, 3), (0, 1, 4, 5), (0, 2, 4, 6), (0, 3, 5, 6), (1, 2, 5, 6), (3, 4)] (if conjecture about Ferrers Diagram Rank-Metric Codes is true: 43054182 with optimal [(0, 1, 2, 3), (0, 1, 4, 5), (0, 2, 4, 6), (0, 3, 5, 6), (1, 2, 5, 6), (3, 4)])
  ) : 43054182
• ef_computation ( show
  [(0, 1, 2), (1, 3, 4), (0, 3, 5), (0, 1, 4, 5, 6), (2, 3, 6), (2, 4, 5)]
  ) : 43054182
• cdc_average_argument ( ) : 13121
• gilbert_varshamov ( ) : 9737
• trivial_4 ( ) : 2
• trivial_2 ( ) : 0

Upper bounds

• relax_d ( ) : 87395584
• improved_cdc_upper_bound ( ) : 87408726
• cdc_upper_bound ( ) : 87408728
• trivial_3 ( ) : 652225844096

Do you have better bounds?