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Strictly convex metric spaces with round balls and fixed points

100%

Bula I.

Banach Center Publications

2005

tom 68

nr 1

23-29

The paper introduces a notion of strictly convex metric space and strictly convex metric space with round balls. These objects generalize the well known concept of strictly convex Banach space. We prove some fixed point theorems in strictly convex metric spaces with round balls.

Arrow-Hahn economic models with weakened conditions of continuity

63%

Bula I., Rika D.

Banach Center Publications

2006

tom 71

nr 1

47-61

In this article we give descriptions of some economic models that are based on Arrow-Hahn economic model. Finally we consider a model with two major assumptions: first, there is discontinuous excess demand function and, second, if price goes to zero, then it is possible that excess demand may approach infinity. For this last new economic model the existence of quasi-equilibrium is proved.

Ograniczanie wyników

2 Banach Center Publications

2 Bula I.

1 Rika D.

1 2006

1 2005

Wyniki wyszukiwania

Strictly convex metric spaces with round balls and fixed points

Arrow-Hahn economic models with weakened conditions of continuity