{"paper":{"title":"Covering Array Bounds Using Analytical Techniques","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.CO","authors_text":"Anant Godbole, Ruyue Yuan, Zoe Koch","submitted_at":"2014-05-12T17:27:06Z","abstract_excerpt":"A $t$-covering array with entries from the alphabet ${\\cal Q}=\\{0,1,\\ldots,q-1\\}$ is a $k\\times n$ stack, so that for any choice of $t$ (typically non-consecutive) columns, each of the $q^{t}$ possible $t$-letter words over ${\\cal Q}$ appear at least once among the rows of the selected columns. We will show how a combination of the Lov\\'asz local lemma; combinatorial analysis; Stirling's formula; and Calculus enables one to find better asymptotic bounds for the minimum size of $t$-covering arrays, notably for $t = 3, 4$. Here size is measured in the number of rows, as expressed in terms of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.2844","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}