2 problems

Matching

Bose et al.'s maximum distance spectral radius conjecture for cacti
About 3 years old
Bose et al.'s conjecture. The graph
opencacti distance-spectral-radius spectral-graph-theory
08
Li and Zhang's signless Laplacian conjecture for cacti with given matching number
About 11 years old
Li and Zhang's conjecture. If $n=2m+1$ , then
opencacti matching-number spectral-graph-theory
09