projection measure
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2019 ◽  
Vol 169 (2) ◽  
pp. 307-322 ◽  
Author(s):  
DIOGO OLIVEIRA E SILVA ◽  
RENÉ QUILODRÁN

AbstractWe establish the general form of a geometric comparison principle for n-fold convolutions of certain singular measures in ℝd which holds for arbitrary n and d. This translates into a pointwise inequality between the convolutions of projection measure on the paraboloid and a perturbation thereof, and we use it to establish a new sharp Fourier extension inequality on a general convex perturbation of a parabola. Further applications of the comparison principle to sharp Fourier restriction theory are discussed in the companion paper [3].


Mathematics ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 39 ◽  
Author(s):  
Chao Tian ◽  
Wen Yu Zhang ◽  
Shuai Zhang ◽  
Juan Juan Peng

With respect to multi-criteria decision-making (MCDM) problems in which the criteria denote the form of single-valued neutrosophic sets (SVNSs), and the weight information is also fully unknown, a novel MCDM method based on qualitative flexible multiple criteria (QUALIFLEX) is developed. Firstly, the improved cosine measure of the included angle between two SVNSs is defined. Then, the improved single-valued neutrosophic projection is developed, and the corresponding improved single-valued neutrosophic bidirectional projection and single-valued neutrosophic bidirectional projection difference are investigated. Moreover, the partial ordering relation of SVNSs is developed. Secondly, an extended QUALIFLEX method based on an improved single-valued neutrosophic projection measure is proposed to handle MCDM problems in which the weights of criteria are completely unknown. Finally, an example for selection of a green supplier, as well as a performance comparison analysis, are provided to demonstrate the effectiveness of the proposed method.


2009 ◽  
Author(s):  
Matthias Conradt ◽  
Jan-Michael Dierk ◽  
Pia Schlumberger ◽  
Christina Albohn ◽  
Elisabeth Rauh ◽  
...  

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