Among the continuous functions on , the positive definite
 functions are those functions which are the Fourier
 transforms of nonnegative Borel measures.
Bochner's Theorem
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Cite this as:
Weisstein, Eric W. "Bochner's Theorem." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/BochnersTheorem.html
 
         
	    
	
    
