# Difference between revisions of "Riemann Hypothesis"

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− | The '''Riemann Hypothesis''' is a well-known [[conjecture]] in [[analytic number theory]] that states that all nontrivial [[zero]]s of the [[Riemann zeta function]] have real part <math>1/2</math>. From the [[functional equation]] for the zeta function, it is easy to see that <math>\zeta(s)=0</math> when <math>s=-2,-4,-6,\ldots</math> These are called the trivial zeros. This hypothesis is one of the seven [http://www.claymath.org/millennium/ millenium questions]. | + | The '''Riemann Hypothesis''' is a well-known [[conjecture]] in [[analytic number theory]] that states that all nontrivial [[root |zero]]s of the [[Riemann zeta function]] have real part <math>1/2</math>. From the [[functional equation]] for the zeta function, it is easy to see that <math>\zeta(s)=0</math> when <math>s=-2,-4,-6,\ldots</math> These are called the trivial zeros. This hypothesis is one of the seven [http://www.claymath.org/millennium/ millenium questions]. |

The Riemann Hypothesis is an important problem in the study of prime numbers. Let <math>\pi(x)</math> denote the number of primes less than or equal to ''x'', and let <math>\mathrm{Li}(x)=\int_2^x \frac{1}{\ln t}\; dt</math>. Then an equivalent statement of the Riemann hypothesis is that <math>\pi(x)=\mathrm{Li}(x)+O(x^{1/2}\ln(x))</math>. | The Riemann Hypothesis is an important problem in the study of prime numbers. Let <math>\pi(x)</math> denote the number of primes less than or equal to ''x'', and let <math>\mathrm{Li}(x)=\int_2^x \frac{1}{\ln t}\; dt</math>. Then an equivalent statement of the Riemann hypothesis is that <math>\pi(x)=\mathrm{Li}(x)+O(x^{1/2}\ln(x))</math>. |

## Revision as of 15:24, 15 August 2006

The **Riemann Hypothesis** is a well-known conjecture in analytic number theory that states that all nontrivial zeros of the Riemann zeta function have real part . From the functional equation for the zeta function, it is easy to see that when These are called the trivial zeros. This hypothesis is one of the seven millenium questions.

The Riemann Hypothesis is an important problem in the study of prime numbers. Let denote the number of primes less than or equal to *x*, and let . Then an equivalent statement of the Riemann hypothesis is that .

One fairly obvious try to prove the Riemann Hypothesis (which unfortunately doesn't work) is to consider the reciprocal of the zeta function, , where refers to the Möbius function. Then one might try to show that admits an analytic continuation to . Let be the Mertens function. It is easy to show that if for sufficiently large , then the Riemann Hypothesis would hold. However, A. M. Odlyzko and H. J. J. te Riele showed that this conjecture is in fact false. The Riemann Hypothesis would also follow if for any constant ; however, this is believed to be false as well.