NEAR FIXED POINT THEOREMS IN HYPERSPACES

Near Fixed Point Theorems in Hyperspaces

The hyperspace consists of all the subsets of a vector space.It is well-known that the hyperspace is not a vector space because it lacks the concept of inverse element.This also says that we cannot consider its normed structure, and some kinds of fixed point theorems cannot be established in this space.In this paper, we shall propose the concept Di

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Arrhythmogenic drugs can amplify spatial heterogeneities in the electrical restitution in perfused guinea-pig heart: An evidence from assessments of monophasic action potential durations and JT intervals.

Non-uniform shortening of the action potential duration (APD90) in different myocardial regions upon heart rate acceleration can set abnormal repolarization gradients and promote arrhythmia.This study examined whether spatial heterogeneities in APD90 restitution can be amplified by drugs with clinically proved proarrhythmic potential (dofetilide, q

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