##  [Exponential Sum Methods](/exponential-sum-methods) 

  ##  [Exponential Sum Methods](https://puremath.quantumdictionary.io/exponential-sum-methods-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A collection of techniques for estimating exponential sums of the form sum_{n≤N} a_n e(f(n)) where oscillation is exploited to obtain cancellation; methods include van der Corput differencing, Weyl differencing, stationary phase, and bounds for character or Kloosterman sums.