Li, YangQin, JiahuLei, FengchunWang, XiangkeZhang, Xihai2015-12-100218-2165http://hdl.handle.net/1885/68017Let G be a 0-or 1-deficient graph which is intrinsically knotted, let J represent any graph obtained from G by a finite sequence of δ-Y exchanges and/or vertex expansions. We prove that removing any vertex of J, and all edges incident to that vertex, yieKeywords: d-Y exchanges; embedded graphs; Intrinsically knotted; vertex-expansion201210.1142/S021821651100990X2016-02-24