Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Squared distance matrices of trees with matrix weights   Let $T$ be a tree on $n$ vertices whose edge weights are positive definite
matrices of order $s$. The squared distance matrix of $T$, denoted by $\Delta$,
is the $ns \times ns$ block matrix with $\Delta_{ij}=d(i,j)^2$, where $d(i,j)$
is the sum of the weights of the edges in the unique $(i,j)$-path. In this
article, we obtain a formula for the determinant of $\Delta$ and find
${\Delta}^{-1}$ under some conditions.

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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: cond-mat
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: atom-ph