This can be proven for any valid argument form using a truth table which shows that there is no situation in which there are all true premises and a false conclusion.
Founded in 1994, IntraLearn Software Corporation (ISC) is a pioneer of creating e-Learning and Knowledge Organization products for corporate enterprises, academic institutions, associations, government agencies and training suppliers.
Interagency Security Committee. On October 19, 1995, six months after the Oklahoma City bombing of the Alfred P. Murrah Federal Building, President Clinton issued Executive Order 12977, creating the Interagency Security Committee (ISC) to address continuing government-wide security for Federal facilities.