unsolved

Descendants (at least 4 branches originate here)

• unsolved

  Unsolved problems are problems for which we neither have a solution, nor know whether such solution can be found.

  • is_parent solvable ·

    P is solvable if, at some point in time, a proof will be provided that solution to P can be found.
  • is_parent unsolvable ·

    P is unsolvable if, at some point in time, a proof will be provided that P does not have solution.
  • is_parent fatal ·

    Problem P is "fatal" if no proof could ever be provided whether P is solvable or unsolvable. It is impossible to tell about problem if it is "fatal". That's why