in this paper we define the removable cycle that, if $im$ is a
class of graphs, $gin im$, the cycle $c$ in $g$ is called
removable if $g-e(c)in im$. the removable cycles in eulerian
graphs have been studied. we characterize eulerian graphs which
contain two edge-disjoint removable cycles, and the necessary and
sufficient conditions for eulerian graph to have removable cycles
h...
