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Schwinger’s Quantum Action Principle PDF

Book Description: Starting from the earlier notions of stationary action principles, these tutorial notes shows how Schwinger’s Quantum Action Principle descended from Dirac’s formulation, which independently led Feynman to his path-integral...

Towards A General Theory Of Deep Downturns PDF

Book Description: Joseph Stiglitz examines the theory behind the economic downturns that have plagued our world in recent times. This fascinating three-part lecture acknowledges the failure of economic models to successfully predict the 2008 crisis...

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