Abstract:All (finite connected) spatial graphs are supplied with an additional structure -- the replenished skeleton and its disk framing, -- in such a way that the problem of isotopic classification of spatial graphs endowed with this structure admits reduction to two problems: the (classical) problem of isotopic classification of tangles and the (close to classical) problem of isotopic classification of plane trees equipped with an additional structure, specifically, a set of hanging vertices and a fixed vertex (the root of the tree) in this set.

---

中文翻译：

---

空间图，缠结和平面树

摘要：所有（有限连通）空间图都具有其他结构-补充骨架及其磁盘框架-以这种结构赋予的空间图同位素分类问题可以简化为两个问题：缠结的同位素分类的（经典）问题和配备了附加结构的平面树的同位素分类的（接近经典）问题，特别是在此处具有一组垂悬的顶点和一个固定的顶点（树的根）组。

---