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Algebraic Complexity Theory (Paperback, Softcover reprint of hardcover 1st ed. 1997)
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Algebraic Complexity Theory (Paperback, Softcover reprint of hardcover 1st ed. 1997)
Series: Grundlehren der mathematischen Wissenschaften, 315
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The algorithmic solution of problems has always been one of the
major concerns of mathematics. For a long time such solutions were
based on an intuitive notion of algorithm. It is only in this
century that metamathematical problems have led to the intensive
search for a precise and sufficiently general formalization of the
notions of computability and algorithm. In the 1930s, a number of
quite different concepts for this purpose were pro posed, such as
Turing machines, WHILE-programs, recursive functions, Markov
algorithms, and Thue systems. All these concepts turned out to be
equivalent, a fact summarized in Church's thesis, which says that
the resulting definitions form an adequate formalization of the
intuitive notion of computability. This had and continues to have
an enormous effect. First of all, with these notions it has been
possible to prove that various problems are algorithmically
unsolvable. Among of group these undecidable problems are the
halting problem, the word problem theory, the Post correspondence
problem, and Hilbert's tenth problem. Secondly, concepts like
Turing machines and WHILE-programs had a strong influence on the
development of the first computers and programming languages. In
the era of digital computers, the question of finding efficient
solutions to algorithmically solvable problems has become
increasingly important. In addition, the fact that some problems
can be solved very efficiently, while others seem to defy all
attempts to find an efficient solution, has called for a deeper
under standing of the intrinsic computational difficulty of
problems."
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