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Questions about the branch of combinatorics called graph theory (not to be used for questions concerning the graph of a function). This tag can be further specialized via using it in combination with more specialized tags such as extremal-graph-theory, spectral-graph-theory, algebraic-graph-theory, topological-graph-theory, random-graphs, graph-colorings and several others.

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Finding $k$ active elements by evaluating the "any-operator" of subsets of variables

Assume a set $S$ of elements $\{s_1,\dots,s_n\}$, each which has a hidden label 'active' or 'inactive'. Assume there are $m\ll n$ active elements in total. You are allowed to iteratively perform a sin …
Erik Hellsten's user avatar