This book deals with certain important problems in Classical and Quantum Information TheoryQuantum Information Theory, A Selection of Matrix Inequalities Stochastic Filtering Theory Applied to Electromagnetic Fields and StringsWigner-distributions in Quantum MechanicsQuantization of Classical Field TheoriesStatistical Signal ProcessingQuantum Field Theory, Quantum Statistics, Gravity, Stochastic Fields and Information Problems in Information TheoryIt will be very helpful for students of Undergraduate and Postgraduate Courses in Electronics, Communication and Signal Processing.Print edition not for sale in South Asia (India, Sri Lanka, Nepal, Bangladesh, Pakistan or Bhutan).