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Abstract:We provide algorithms for the minimum 2-edge-connected spanning subgraph problem and the minimum 2-vertex-connected spanning subgraph problem with approximation ratio $\frac{9}{7}$. This improves upon a recent algorithm with ratio slightly smaller than $\frac{4}{3}$ for 2-edge-connectivity, and another one with ratio $\frac{4}{3}$ for 2-vertex-connectivity.
From: Ali Çivril [view email]
[v1]
Mon, 15 Jul 2024 08:34:20 UTC (144 KB)
[v2]
Thu, 26 Sep 2024 11:16:05 UTC (147 KB)
[v3]
Tue, 21 Jul 2026 09:07:54 UTC (1 KB) (withdrawn)
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