A study on certain bounds of the rna number and some characterizations of the parity signed graphs

Mohan Ramu, Joseph Varghese Kureethara

For a given graph $G$, let $f:V(G)\to \{1,2,\dots ,n\}$ be a bijective mapping. For a given edge $uv\in E(G)$, $\sigma (uv)=+$, if $f(u)$ and $f(v)$ have the same parity and $\sigma (uv)=-$,…