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- W4382322631 abstract "In tensor eigenvalue problems, one is likely to be more interested in H-eigenvalues of tensors. The largest H-eigenvalue of a nonnegative tensor or of a uniform hypergraph is the spectral radius of the tensor or of the uniform hypergraph. We find upper bounds and lower bounds (interlacing inequalities) for the largest H-eigenvalue of a principal subtensor of a symmetric zero diagonal tensor that is of even order or nonnegative, as well as lower bounds for the largest H-eigenvalue of a uniform hypergraph with some vertices or edges removed. We also investigate similar problems for the least H-eigenvalues. We give examples to verify the sharpness of the bounds or in some cases for uniform hypergraphs, we characterize the equality. Particularly, for a connected linear $k$-uniform hypergraph $G$ with $vin V(G)$, we give a sharp lower bound for the spectral radius of $G-v$ in terms of the spectral radius of $G$ and the degree of $v$ and characterize the extremal hypergraphs, and show that the maximum spectral radius of the subhypergraphs with one vertex removed is greater than or equal to the spectral radius of the hypergraph minus one, which is attained if and only if it is a Steiner system $S(2,k,n)$." @default.
- W4382322631 created "2023-06-28" @default.
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- W4382322631 date "2023-06-25" @default.
- W4382322631 modified "2023-09-25" @default.
- W4382322631 title "Largest and Least H-Eigenvalues of Symmetric Tensors and Hypergraphs" @default.
- W4382322631 doi "https://doi.org/10.48550/arxiv.2306.14244" @default.
- W4382322631 hasPublicationYear "2023" @default.
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