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1. General Inequalities

   Let a = (a1, ..., an) be a given sequence of positive numbers. Then the harmonic mean Hn (a) of the numbers a1, ..., an is defined as...

   Dragoslav S. Mitrinović in Analytic Inequalities

   Chapter 1970
   

2. Nonlinear systems

   We shall consider mainly nonlinear systems of the form (6.1.1)...

   Lamberto Cesari in Asymptotic Behavior and Stability Problems in Ordinary Differential Equations

   Conference paper 1971
   

3. Other research on equations of second order. Equations of higher order. Systems of equations.

   In this chapter we intend to point out various questions briefly, which have been postponed until now, regarding both elliptic equations of second...

   Carlo Miranda in Partial Differential Equations of Elliptic Type

   Chapter 1970
   

4. Abstract unilateral problems

   G. Fichera in Conference on the Theory of Ordinary and Partial Differential Equations

   Conference paper 1972