## Contents V.11, N.1, 2020

• ESTIMATION OF AREAS ON SOME SURFACES DEFINED BY THE SYSTEM OF EQUATIONS
I.SH. JABBAROV, G.K. HASANOVA (pp. 89-99)
• #### Abstract

In this article, we consider some metric questions on Manifolds defined by the system of equations. We obtain estimates in terms of products of singular numbers of some matrices defined by taking all partial derivatives of entries of a given matrix of the same order.

#### Keywords

differentiable function, surface integral, system of equations, Jacobi Matrix, surface integrals.

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