We continue the study of multivalued mappings with the BAD (bounded angular distortion) property which was initiated in the author’s works in 2018. Using the technique of ultrafilters, we obtain a full description for the mutual adherence domains of the images of points under mappings of BAD class. We exhibit the example that illustrates all possible cases in the general formula for adherence domains.

中文翻译：

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多值卡西莫比乌斯映射下点图像的依从性

我们继续研究具有 BAD（有界角失真）属性的多值映射，这是作者在 2018 年的作品中发起的。使用超滤器技术，我们获得了映射下点的图像的相互粘附域的完整描述坏课。我们展示了一个示例，该示例说明了遵守域通用公式中所有可能的情况。