Analysis of information sources in references of the Wikipedia article "Algebraic connectivity" in English language version.
Even if G is quasi-strongly connected, which is equivalent to G containing a directed spanning tree, a(G) can still be nonpositive as the exploding star and Theorem 1 indicate.
Even if G is quasi-strongly connected, which is equivalent to G containing a directed spanning tree, a(G) can still be nonpositive as the exploding star and Theorem 1 indicate.