# 1992

## Note on an abstract continuation theorem

AbstractThe author shows that one may derive the property of homotopy invariance for the fixed point index (for compact maps…

## Quasiconvex functions of higher order and the behavior of some nonlinear functionals

Abstract A result of T. Popoviciu, which characterizes real linear functionals on $$C(I)$$ that are positive on n-convex functions as…

## Balance equations for the vector fields defined on orientable manifolds

Abstract   AuthorsC. Vamoş Tiberiu Popoviciu Institutue of Numerical Analysis A. Georgescu Faculty of Science, University of Pitești N. Suciu…

## Error estimation in numerical solution of equations and systems of equations

Abstract In \cite{7 Urabe}, \cite{8 Urabe} M. Urabe studies the numerical convergence and error estimation in the case of operatorial equation…

## Optimal problems concerning interpolation methods of solution of equations

Abstract We consider optimality problems regarding the order of convergence of the iterative methods which are obtained by inverse interpolation…

## On a generalization of the Steffensen method

Abstract We extend the Steffensen method for solving the equation $$f\left( x\right)=0$$ to the setting of the Banach spaces, \(f:X\rightarrow…