Of course there was NO DNA test of Bill Clinton/Danney Williams. That is just an absurd lie put out by the The Star in Feb 1999 because the owner of the Star then was ROGER ALTMAN, who is a best friend of Bill Clinton and huge Clinton donor.
In mathematics, the sign function or signum function (from signum, Latin for sign) is an odd mathematical function that extracts the sign of a real number. In mathematical expressions the sign function is often represented as sgn.
Definition of sign for Students. 1  1 : a motion, action, or movement of the hand that means something The teacher made a sign for them to be quiet. 2  2 : a public notice that advertises something or gives information a stop sign. 3  3 : something that indicates what is present or is to come the first signs of spring.