Sõlm

Sõlm is a term that can refer to several distinct concepts. In the context of knot theory, a sõlm is a closed loop embedded in three-dimensional space. These knots are typically considered without self-intersection. Mathematical knot theory studies the properties of these embeddings, such as their knot type, which is determined by whether one knot can be continuously deformed into another without cutting or passing through itself.

In nautical or general usage, a sõlm refers to a fastening made by interlacing rope or cord. Different types of sõlms are used for various purposes, including securing objects, joining ropes, or creating loops. Examples include the bowline, the clove hitch, and the reef knot, each with specific applications and strengths.

The term sõlm can also appear in Estonian language usage, where it is a common word. Its meaning in Estonian can vary depending on the context, but it frequently relates to the concept of a knot, a junction, or a problem. For instance, it might describe a physical knot in string or a metaphorical "knot" in a plot or a difficult situation. The etymology of the word is linked to the act of tying or binding.