Search for basic properties of the nucleon-nucleon interaction

In this work the N-N amplitudes are obtained directly from phase-shift analysis. From one point of view our aim is to check whether some features, evident in the direct amplitude analysis, are not omitted in the commonly used models. We also wish to check if some new relations exist for the N-N amplitudes which can lead to a simplified analysis of the N-N interaction. For example, it is possible that new relations or symmetries exist which will limit the number of independent amplitudes. (orig./HSI)