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.
Ashraf Habibullah, S.E. (Founder, President, and CEO) Computers and Structures, Inc. (CSI) is a structural and earthquake engineering software company founded in 1975 and based in Walnut Creek, California with additional office location in New York. The structural analysis and design software CSI produce include SAP2000, CSiBridge, ETABS, SAFE, PERFORM-3D, and CSiCOL.