- When is a matrix a sum of idempotents?
1990/03/01 by Robert E. Hartwig, Mohan S. Putcha · 4 citations
Computer Science · Engineering · Mathematics · #Advanced Topics in Algebra #Combinatorics #Computer science #Eigenvalues and eigenvectors #Field (mathematics) #Integer (computer science) #Integer matrix #Mathematics #Matrix (chemical analysis) #Matrix Theory and Algorithms #Nonnegative matrix #Pure mathematics #Rank (graph theory) #Symmetric matrix #TRACE (psycholinguistics) #Zero (linguistics) #graph theory and CDMA systems
- Strongly regular graphs with (—1,1,0) adjacency matrix having eigenvalue 3
1968/04/01 by J.J. Seidel · 4 citations
Engineering · Mathematics · #Adjacency matrix #Bipartite graph #Chordal graph #Combinatorics #Discrete mathematics #Eigenvalues and eigenvectors #Finite Group Theory Research #Graph #Graph power #Graph theory and applications #Indifference graph #Integer matrix #Line graph #Mathematics #Nonnegative matrix #Pathwidth #Strongly regular graph #Symmetric matrix #Two-graph #graph theory and CDMA systems