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<p>1. Quantum Theory in Algebraic and Geometric Approaches.- 2. Scattering Theory.- 3. Deterministic Physical Theories.- 4. Appendix.</p>

<p><b>Albert Schwarz </b>is a Soviet and American mathematician and theoretical physicist, currently Professor Emeritus at UC Davis, USA. He started his long career as a topologist studying the geometry of uniform continuity. This work led him to the notion of the volume invariant of a group, later rediscovered by Milnor as the growth of a group. Schwarz's paper is considered a seminal work in geometric group theory. Investigating topological questions within the calculus of variations, he introduced the concept of the genus of fiber space, which found applications in the topological complexity of algorithms and topological robotics.</p><p>Schwarz later switched to mathematical problems of physics, applying methods of various branches of modern mathematics (homotopy topology, differential topology, algebraic geometry, noncommutative geometry, homological algebra, and number theory) to quantum field theory and string theory. Schwarz's papers on topologically non-trivial objects in physics, such as magnetic monopoles, instantons, and Alice strings, were groundbreaking. Later he found a way to apply ideas of physics to topology constructing the first examples of topological quantum field theories. Now such theories play a prominent role both in mathematics and physics. Schwarz's papers where noncommutative geometry was applied to M(atrix) theory sparked a flurry of activity among physicists. His contributions extend across various domains, including the geometry of superconformal manifolds, multiloop contributions to string amplitudes, BV formalism, supergravity, and maximally supersymmetric gauge theories, among others.<br></p>

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