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Results tagged with real-analysis
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user 491343
Real-valued functions of real variable, analytic properties of functions and sequences, limits, continuity, smoothness of these.
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Real analytic periodic function whose critical points are fully denegerated
I have asked this question on MathStackExchange. My question: is there any non-constant real analytic function $f:\mathbb{R}^n\rightarrow\mathbb{R}$ such that, $$\nabla f(x_0)=0 \Rightarrow \nabla^2 f …
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