Biconservative surfaces in the $4$-dimensional Euclidean sphere

Simona Nistor, Cezar Oniciuc, Nurettin Cenk Turgay +1

In this paper, we study biconservative surfaces with parallel normalized mean curvature vector field ($PNMC$) in the $4$-dimensional unit Euclidean sphere ${\mathbb{S}}^4$. First, we…