Unique maximizers of spectral radius are identified among unbalanced signed bipartite graphs with no negative C4, up to switching isomorphism, for fixed bipartition sizes and order.
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2 Pith papers cite this work. Polarity classification is still indexing.
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math.CO 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Extremal unbalanced signed graphs free of tK4- are characterized as those achieving maximum spectral radius and index on n vertices.
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Unbalanced signed bipartite graphs containing no negative $C_4$ with maximum spectral radius
Unique maximizers of spectral radius are identified among unbalanced signed bipartite graphs with no negative C4, up to switching isomorphism, for fixed bipartition sizes and order.
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Spectral Tur\'an problem for $t\mathcal{K}_{4}^{-}$-free unbalanced signed graphs
Extremal unbalanced signed graphs free of tK4- are characterized as those achieving maximum spectral radius and index on n vertices.