Foundations of Computer Science is a compendium of articles and papers that were presented at FCS '13, an international conference that serves researchers, scholars, professionals, students, and academicians.Selected topics * HPC + Load-Balancing + Approximation Algorithms + N-P Hard Problems* Formal Verification + Automata* Encryption + Calculus + Testing Methods And New Methodologies* Quantum Computing* Grammar Rules and Text Compression Methods