On bridge graphs with local antimagic chromatic number 3

W. C. Shiu, G. C. Lau, R. X. Zhang

Let $G=(V,E)$ be a connected graph. A bijection $f:E\to \{1,\dots ,|E|\}$ is called a local antimagic labeling if for any two adjacent vertices $x$ and $y$, $f^{+}(x)\ne f^{+}(y)$…