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On Noncrossing and Plane Tree-Like Structures
(Communications in Advanced Mathematical Sciences, 2021)
Mathematical trees are connected graphs without cycles, loops and multiple edges. Various trees such as Cayley
trees, plane trees, binary trees, d-ary trees, noncrossing trees among others have been studied extensively. ...
Refined enumeration of 2-noncrossing trees
(Academic Publishing House, 2021)
A 2-noncrossing tree is a connected graph without cycles that can be drawn in the
plane with its vertices on the boundary of circle such that the edges are straight line segments that
do not cross and all the vertices ...