A Baidu Baike page: baike.baidu.hk/item/層層水瀾/12386243 mentions that the score was published in 1970 by Tao Yimo (陶一陌) in a eponymous score book.

If you are a programmer, grep becomes a verb: "to grep" means "to search text files", much like "to Google" means "to search random stuff online".

Triangle problems typically refer to a variety of mathematical problems and scenarios involving triangles in geometry. These problems can encompass a range of topics, including the properties of triangles, their relationships with angles and sides, and theorems that apply to them. Here are some common types of triangle problems: 1. **Finding Side Lengths**: - Using the Pythagorean theorem to find the lengths of sides in right triangles.

Sigma-pi and equivalent-orbital models are concepts from molecular and solid-state physics that deal with the electronic structure of molecules and materials. ### Sigma-Pi Models 1. **Sigma Bonds (σ Bonds)**: These are covalent bonds formed when two atoms share electrons in an overlapping region of their atomic orbitals along the axis connecting the two nuclei. Sigma bonds are generally stronger because they involve direct overlap.

In the context of mathematics, particularly in the fields of algebra and number theory, a **multiplicatively closed set** is a subset of a given set that is closed under the operation of multiplication. This means that if you take any two elements from this set and multiply them together, the result will also be an element of the set. Formally, let \( S \) be a set.

Arc suppression refers to the techniques and methods employed to minimize or eliminate electrical arcing in various applications, particularly in electrical systems and circuits. Arcing occurs when an electrical current jumps between two conductive points, creating a plasma channel that can lead to energy loss, equipment damage, and safety hazards such as fires or electrical shocks.

Logical positivism, also known as logical empiricism, is a philosophical movement that developed in the early 20th century, primarily in the context of the Vienna Circle and the work of philosophers such as Moritz Schlick, Rudolf Carnap, and A.J. Ayer. It sought to synthesize elements of empiricism and formal logic, emphasizing the importance of scientific knowledge and the use of logical analysis in philosophical inquiry.