A Dual Polynomial for OR

Robert Spalek

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arXiv · 0803.4516

A Dual Polynomial for OR

Robert Spalek

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Abstract

We reprove that the approximate degree of the OR function on n bits is Omega(sqrt(n)). We consider a linear program which is feasible if and only if there is an approximate polynomial for a given function, and apply the duality theory. The duality theory says that the primal program has no solution if and only if its dual has a solution. Therefore one can prove the nonexistence of an approximate polynomial by exhibiting a dual solution, coined the dual polynomial. We construct such a polynomial.

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Robert Spalek. 2008-03-31. A Dual Polynomial for OR. https://arxiv.org/abs/0803.4516

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