Equivalence of Relational Algebra and Relational Calculus Query Languages Having Aggregate Functions posted on Aug 8, 2010 von Frank Kalis in Links
The Development of Mathematical Logic from Russell to Tarski: 1900–1935 posted on Aug 8, 2010 von Frank Kalis in Links
THE SEMANTIC CONCEPTION OF TRUTH AND THE FOUNDATIONS OF SEMANTICS posted on Aug 8, 2010 von Frank Kalis in Links
A Relational Model of Data for Large Shared Data Banks posted on Aug 8, 2010 von Frank Kalis in Links