Error functionIn mathematics, the error function (also called the Gauss error function), often denoted by erf, is a complex function of a complex variable defined as: Some authors define without the factor of . This nonelementary integral is a sigmoid function that occurs often in probability, statistics, and partial differential equations. In many of these applications, the function argument is a real number. If the function argument is real, then the function value is also real.
Estanislao ZuletaEstanislao Zuleta (1935 – 1990) was a Latin American philosopher, writer and professor from Colombia. He was known especially for his works on the universities being a professor for all his life. More important than his writings, Zuleta is remembered by his conferences that were carefully recorded by his colleagues and pupils and published several times during his life and after his death in 1990. He dedicated especially to philosophy, Latin American economy, psychology and education.
