## Real Analysis Exchange

### Most CĮ Functions Are Nowhere Gevrey Differentiable of Any Order

F. S. Cater

#### Abstract

We define a complete metric on $C^\infty$, and find that most functions in $C^\infty$ are nowhere Gevrey differentiable of any order. For any $s > 1$ we prove there exists an everywhere Gevrey differentiable function of order $s$ that is nowhere Gevrey differentiable of any order less than $s$.

#### Article information

Source
Real Anal. Exchange, Volume 27, Number 1 (2001), 77-80.

Dates
First available in Project Euclid: 6 June 2008

https://projecteuclid.org/euclid.rae/1212763953

Mathematical Reviews number (MathSciNet)
MR1887684

Zentralblatt MATH identifier
1012.26021

#### Citation

Cater, F. S. Most C Į Functions Are Nowhere Gevrey Differentiable of Any Order. Real Anal. Exchange 27 (2001), no. 1, 77--80. https://projecteuclid.org/euclid.rae/1212763953

#### References

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• S. S. Kim and K. H. Kwon, Smooth $(C^\infty)$ but nowhere analytic functions, Amer. Math. Monthly, 107 (2000), 264–266.