In the past two decades many United States jurisdictions have adopted statutes promoting joint legal custody, shared parental responsibility, and continuing contact with both parents following ...

And again and again, these decorated mathematicians were unable to find a solution to what became known as the Conway knot problem. The problem had to do with proving whether Conway’s knot was ...

Sometimes you might desire a heavy hand from an instructor, such as in situations where making a mistake might be costly or you are nervous about being able to deal with a knotty problem.