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math.GN2020
Certain properties of contra-T*12-continuous functions
Hadi J. Mustafa, Layth M. Alabdulsada
The concept of contra function was introduced by Dontchev [2], in this work, we use the notion of T*12-open to study a new class of function called a contra-T*12-continuous functio…
math.DG2020★ 4 cited
On the divergence representation of the Gauss curvature of Riemannian surfaces and its applications
Cs. Vincze, M. Oláh, L. M. Alabdulsada
In the paper we consider Riemannian surfaces admitting a global expression of the Gauss curvature as the divergence of a vector field. It is equivalent to the existence of a metric…