*Reports of
Enlarged Session of the Seminar of I. Vekua Institute
of Applied Mathematics*

Volume 13, # 2-3, 1998

C O N T E N T S

# 2

**Berikelashvili**** G.** On the Definition of a Nonlocal
Trace of a Function

**Danelia**** A., Lekishwili
M.** Conjugated Functions
of Multiple Variables and Deformation of Zygmund's Z(ω^{(2)},C(T^{m})) Class

**Goginava**** U.**

**Gogoladze**** L., Meskhia
R.** On The Absolute
Convergence of Fourier Trigonometric Series

# 3

**Gorgodze**** N., Tadumadze
T.**
Differentiability of Solutions of Neutral Type Quasi-Linear Differential
Equations With Respect to the Initial Data and the Right-hand Side

**Gubelidze**** G.** On Approximate Solution of a Control Problem
for Parabolic Equations

**Dochviri**** B., Shashiashvili
M.** The American Lookback Put and Optimal Stopping

**Kharatishvili**** G.** The Dynamic Model of the Projects of Optimal
Crediting

**Maisuradze**** V.** About a Generalization of Lusternik
Theorem

**Sharikadze**** J.** Magnetohydrodynamic
Free Convection Flows in Sloping Channels

**Sharikadze**** J.** On Some Steady Magnetohydrodynamic
Problems of Convection Flows

**Sigua**** L.** Magnetic Problem for the Vector Helmholtz Equation

**Tavadze**** A.** Existence Theorem in the Neutral Type Quasi-
Linear Optimal Control Problems

**Tsintsadze**** Z.** Necessary Conditions of Optimality of
Processes with Parameters to Quasi-Linear Problems of Control in the Presence
of Mixed Restrictions