Quantum Algorithms Via Linear Algebra

Gödel's Lost Letter and P=NP

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Richard Feynman had a knack for new ways of seeing. His Feynman diagrams not only enabled visualizing subatomic processes, they also rigorously encapsulated an alternative formalism that cross-validated the equations and procedures of quantum field theory. His 1948 path-integralformulation sprang out of work by Paul Dirac that re-interpreted a continuous Lagrangian operator as a matrix multiplication. Fast forward to his 1985 article “Quantum Mechanical Computers” (a followup to his 1981/82 keynote speech “Simulating Physics With Computers”) and there are only matrices and circuit diagrams to be seen.

Today, December 5 as Dick and I write, is the US publication day of our textbook with MIT Press, titled Quantum Algorithms Via Linear Algebra: A Primer. It is also available from Amazon. Both places offer it for less than two adult IMAX tickets to see “Interstellar.” Publication abroad is on 1/1/15.

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