Equivalence of closed 1-forms on surfaces with edge
We investigate closed 1-forms with isolated zeros on surfaces with edge. A criterion for the topological equivalence of closed 1-forms is proved.
English version (Springer): Ukrainian Mathematical Journal 61 (2009), no. 11, pp 1710-1727.
Citation Example: Budnyts'ka T. V., Prishlyak A. O. Equivalence of closed 1-forms on surfaces with edge // Ukr. Mat. Zh. - 2009. - 61, № 11. - pp. 1455-1473.