Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structure connectivity and substructure connectivity of twisted
  hypercubes   Let $G$ be a graph and $T$ a certain connected subgraph of $G$. The
$T$-structure connectivity $\kappa(G; T)$ (or resp., $T$-substructure
connectivity $\kappa^{s}(G; T)$) of $G$ is the minimum number of a set of
subgraphs $\mathcal{F}=\{T_{1}, T_{2}, \ldots, T_{m}\}$ (or resp.,
$\mathcal{F}=\{T^{'}_{1}, T^{'}_{2}, \ldots, T^{'}_{m}\}$) such that $T_{i}$ is
isomorphic to $T$ (or resp., $T^{'}_{i}$ is a connected subgraph of $T$) for
every $1\leq i \leq m$, and $\mathcal{F}$'s removal will disconnect $G$. The
twisted hypercube $H_{n}$ is a new variant of hypercubes with asymptotically
optimal diameter introduced by X.D. Zhu. In this paper, we will determine both
$\kappa(H_{n}; T)$ and $\kappa^{s}(H_{n}; T)$ for $T\in\{K_{1,r}, P_{k}\}$,
respectively, where $3\leq r\leq 4$ and $1 \leq k \leq n$.

13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con