- Home
- Search Results
- Page 1 of 1
Search for: All records
- 
                                    Total Resources1
- Resource Type
- 
                                    
                                    
                                    
                                    0000000001000000
- More
- Availability
- 
                                    
                                    10
- Author / Contributor
- Filter by Author / Creator
- 
                                    
                                        - 
                                                    
                                                        
                                                            
                                                            Basit, Abdul (1)
- 
                                                    
                                                        
                                                            
                                                            McGinnis, Daniel (1)
- 
                                                    
                                                        
                                                            
                                                            Simmons, Henry (1)
- 
                                                    
                                                        
                                                            
                                                            Sinnwell, Matt (1)
- 
                                                    
                                                        
                                                            
                                                            Zerbib, Shira (1)
- 
                                                    
                                                        
                                                            
                                                            #Tyler Phillips, Kenneth E. (0)
- 
                                                    
                                                        
                                                            
                                                            #Willis, Ciara (0)
- 
                                                    
                                                        
                                                            
                                                            & Abreu-Ramos, E. D. (0)
- 
                                                    
                                                        
                                                            
                                                            & Abramson, C. I. (0)
- 
                                                    
                                                        
                                                            
                                                            & Abreu-Ramos, E. D. (0)
- 
                                                    
                                                        
                                                            
                                                            & Adams, S.G. (0)
- 
                                                    
                                                        
                                                            
                                                            & Ahmed, K. (0)
- 
                                                    
                                                        
                                                            
                                                            & Ahmed, Khadija. (0)
- 
                                                    
                                                        
                                                            
                                                            & Aina, D.K. Jr. (0)
- 
                                                    
                                                        
                                                            
                                                            & Akcil-Okan, O. (0)
- 
                                                    
                                                        
                                                            
                                                            & Akuom, D. (0)
- 
                                                    
                                                        
                                                            
                                                            & Aleven, V. (0)
- 
                                                    
                                                        
                                                            
                                                            & Andrews-Larson, C. (0)
- 
                                                    
                                                        
                                                            
                                                            & Archibald, J. (0)
- 
                                                    
                                                        
                                                            
                                                            & Arnett, N. (0)
 
- 
                                                    
                                                        
                                                            
                                                            
- Filter by Editor
- 
                                    
                                        - 
                                                    
                                                        
                                                            
                                                            & Spizer, S. M. (0)
- 
                                                    
                                                        
                                                            
                                                            & . Spizer, S. (0)
- 
                                                    
                                                        
                                                            
                                                            & Ahn, J. (0)
- 
                                                    
                                                        
                                                            
                                                            & Bateiha, S. (0)
- 
                                                    
                                                        
                                                            
                                                            & Bosch, N. (0)
- 
                                                    
                                                        
                                                            
                                                            & Brennan K. (0)
- 
                                                    
                                                        
                                                            
                                                            & Brennan, K. (0)
- 
                                                    
                                                        
                                                            
                                                            & Chen, B. (0)
- 
                                                    
                                                        
                                                            
                                                            & Chen, Bodong (0)
- 
                                                    
                                                        
                                                            
                                                            & Drown, S. (0)
- 
                                                    
                                                        
                                                            
                                                            & Ferretti, F. (0)
- 
                                                    
                                                        
                                                            
                                                            & Higgins, A. (0)
- 
                                                    
                                                        
                                                            
                                                            & J. Peters (0)
- 
                                                    
                                                        
                                                            
                                                            & Kali, Y. (0)
- 
                                                    
                                                        
                                                            
                                                            & Ruiz-Arias, P.M. (0)
- 
                                                    
                                                        
                                                            
                                                            & S. Spitzer (0)
- 
                                                    
                                                        
                                                            
                                                            & Sahin. I. (0)
- 
                                                    
                                                        
                                                            
                                                            & Spitzer, S. (0)
- 
                                                    
                                                        
                                                            
                                                            & Spitzer, S.M. (0)
- 
                                                    
                                                        
                                                            
                                                            (submitted - in Review for IEEE ICASSP-2024) (0)
 
- 
                                                    
                                                        
                                                            
                                                            
- 
                                    Have feedback or suggestions for a way to improve these results?
 !
                                    
                                        
                                            Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher.
                                            Some full text articles may not yet be available without a charge during the embargo (administrative interval).
                                        
                                        
                                        
                                            
                                                
                                             What is a DOI Number?
                                        
                                    
                                
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
- 
            For an $$r$$-uniform hypergraph $$H$$, let $$\nu^{(m)}(H)$$ denote the maximum size of a set $$M$$ of edges in $$H$$ such that every two edges in $$M$$ intersect in less than $$m$$ vertices, and let $$\tau^{(m)}(H)$$ denote the minimum size of a collection $$C$$ of $$m$$-sets of vertices such that every edge in $$H$$ contains an element of $$C$$. The fractional analogues of these parameters are denoted by $$\nu^{*(m)}(H)$$ and $$\tau^{*(m)}(H)$$, respectively. Generalizing a famous conjecture of Tuza on covering triangles in a graph, Aharoni and Zerbib conjectured that for every $$r$$-uniform hypergraph $$H$$, $$\tau^{(r-1)}(H)/\nu^{(r-1)}(H) \leq \lceil{\frac{r+1}{2}}\rceil$$. In this paper we prove bounds on the ratio between the parameters $$\tau^{(m)}$$ and $$\nu^{(m)}$$, and their fractional analogues. Our main result is that, for every $$r$$-uniform hypergraph~$$H$$,\[ \tau^{*(r-1)}(H)/\nu^{(r-1)}(H) \le \begin{cases} \frac{3}{4}r - \frac{r}{4(r+1)} &\text{for }r\text{ even,}\\\frac{3}{4}r - \frac{r}{4(r+2)} &\text{for }r\text{ odd.} \\\end{cases} \]This improves the known bound of $$r-1$.We also prove that, for every $$r$$-uniform hypergraph $$H$$, $$\tau^{(m)}(H)/\nu^{*(m)}(H) \le \operatorname{ex}_m(r, m+1)$$, where the TurĂ¡n number $$\operatorname{ex}_r(n, k)$$ is the maximum number of edges in an $$r$$-uniform hypergraph on $$n$$ vertices that does not contain a copy of the complete $$r$$-uniform hypergraph on $$k$$ vertices. Finally, we prove further bounds in the special cases $(r,m)=(4,2)$ and $(r,m)=(4,3)$.more » « less
 An official website of the United States government
An official website of the United States government 
				
			 
					 
					
