User - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-25T14:12:52Z http://mathoverflow.net/feeds/user/29665 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/115769/uniform-continuous-of-probability-distribution-function uniform continuous of probability distribution function unknown (google) 2012-12-08T04:05:33Z 2012-12-08T04:15:12Z <p>If F is a continuous probability distribution function, is F uniformly continuous on R?</p> http://mathoverflow.net/questions/115421/why-do-we-need-to-specify-to-symmetric-matrix-when-defining-real-positive-definit why do we need to specify to symmetric matrix when defining real positive definite matrix? unknown (google) 2012-12-04T17:08:17Z 2012-12-04T17:47:05Z <p>The following is from WiKi:</p> <p>In linear algebra, a symmetric n × n real matrix M is said to be positive definite if zTMz is positive, for all non-zero column vectors z of n real numbers; where zT denotes the transpose of z. More generally, an n × n complex matrix M is said to be positive definite if z*Mz is real and positive for all non-zero complex vectors z; where z* denotes the conjugate transpose of z. This property implies that M is an Hermitian matrix.</p>