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In the distributed setting, the only existing constructions of \textit{sparseskeletons}, (i.e., subgraphs with $O(n)$ edges) either use randomization orlarge messages, or require $\Omega(D)$ time, where $D$ is the hop-diameter ofthe input graph $G$. We devise the first deterministic distributed algorithm inthe CONGEST model (i.e., uses small messages) for constructing linear-sizeskeletons in time $2^{O(\sqrt{{\log n}\cdot{\log{\log n}}})}$. We can alsocompute a linear-size spanner with stretch $polylog(n)$ in low deterministicpolynomial time, i.e., $O(n^\rho)$ for an arbitrarily small constant $\rho >0$,in the CONGEST model. Yet another algorithm that we devise runs in $O({\logn})^{\kappa-1}$ time, for a parameter $\kappa=1,2,\dots,$ and constructs an$O({\log n})^{\kappa-1}$ spanner with $O(n^{1+1/\kappa})$ edges. All ourdistributed algorithms are lightweight from the computational perspective,i.e., none of them employs any heavy computations.

Fast Deterministic Constructions of Linear-Size Spanners and Skeletons