Definition 1.2.1.6. Let $S_{}$ be a simplicial set. We will say that $S_{}$ is connected if it is nonempty and every summand $S'_{} \subseteq S_{}$ is either empty or coincides with $S_{}$.
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Definition 1.2.1.6. Let $S_{}$ be a simplicial set. We will say that $S_{}$ is connected if it is nonempty and every summand $S'_{} \subseteq S_{}$ is either empty or coincides with $S_{}$.