"Sings Evergreens" is likely a reference to an album or compilation featuring classic songs that are enduringly popular, often referred to as "evergreen" tunes. These songs typically have a timeless quality and remain beloved across generations.

Skolem normal form (SNF) is a way of structuring logical formulas in first-order logic, specifically designed to facilitate automated reasoning and theorem proving. It is closely related to the process of converting logical formulas into a standardized format that makes certain operations, like satisfiability checking, more straightforward.

SkyTran is a proposed transportation system that aims to provide high-speed, efficient, and sustainable urban transit solutions using small, pod-like vehicles that run on elevated guideways. The concept envisions a network of these pods that can transport passengers smoothly above existing roadways, alleviating ground-level traffic congestion. SkyTran vehicles are designed to be highly automated and capable of operating on a demand-responsive basis, meaning they can be called upon as needed rather than following a fixed schedule.

In geotechnical engineering, the sliding criterion generally refers to the conditions under which a soil mass, slope, or structure may experience sliding or failure due to shear stress exceeding the shear strength of the materials involved. This concept is particularly important in the analysis of stability for slopes, retaining walls, and earth dams.

In mathematics, "reflection" typically refers to a type of symmetry transformation that maps points in a geometric figure across a specified line or plane. When we talk about reflection in a two-dimensional space, it often involves reflecting points across a line, while in three-dimensional space, it involves reflecting points across a plane.

"Somewhere Over the Rainbow" is a studio album by American country music artist Willie Nelson, released on June 20, 2019. The album contains a collection of classic standards and beloved songs performed in Nelson's signature style. It showcases his distinctive voice and interpretive prowess, blending genres and appealing to both country and jazz audiences. The album includes tracks that pay homage to various composers and songwriters, featuring arrangements that highlight Nelson's ability to convey deep emotion through his music.

The Somos sequence refers to a family of recursively defined sequences discovered by the mathematician Edward Somos. They are notable for their interesting properties and connections to combinatorial mathematics and number theory.

"Songs from the Last Century" is an album by George Michael, released in December 1999. The album features covers of various songs that span multiple decades and genres, showcasing Michael's interpretations of classic tracks. It includes songs originally by artists such as Frank Sinatra, Queen, and Cole Porter, among others. The album highlights Michael's vocal prowess and his ability to put a contemporary spin on timeless classics.

The Southern Illinois Salukis men's basketball program has a rich history, and various players have excelled in different statistical categories over the years. The statistical leaders typically include categories like points, rebounds, assists, steals, and blocks.

In the field of mathematical analysis, particularly in functional analysis and the theory of partial differential equations, the concepts of *test functions* and *distributions* (or generalized functions) are quite important. Here's an overview of both concepts and their relationship: ### Test Functions **Test functions** are smooth functions that have certain desirable properties, such as being infinitely differentiable and having compact support.

William Ka Ming Lau is a researcher and academic known for his work in the field of atmospheric sciences, particularly in areas like meteorology and climate change.

"William's Doll" is a children's book written by Charlotte Zolotow, first published in 1972. The story focuses on a young boy named William who wants a doll, a desire that challenges traditional gender norms regarding toys and play. Despite societal expectations and the disapproval of his father, who believes dolls are only for girls, William's yearning for the doll symbolizes a broader theme of individuality and the importance of allowing children to explore their identities freely.

The Wilson matrix, often referred to in the context of particle physics, specifically in the study of quantum field theories and the analysis of interactions, particularly those involving gauge theories and their symmetries. It is typically associated with the systematic approach to constructing effective field theories and the renormalization group. In essence, the Wilson matrix is used to describe the relationship between different physical observables or parameters in a theoretical framework, particularly when considering different energy scales.

Witness-indistinguishable proofs are a concept in cryptography and zero-knowledge proofs. They are a type of interactive proof where the validity of a statement can be proven without revealing any specific information about the witness (or secret) used to prove the statement. ### Key Characteristics of Witness-Indistinguishable Proofs: 1. **Witness**: In the context of proofs, a witness is typically a solution or secret information that helps validate a statement.

Wolfgang Dahmen is a distinguished German mathematician known for his contributions to several areas of mathematics, including approximation theory, numerical analysis, and wavelet theory. He has made significant advancements in the mathematical foundations of wavelets and their applications in various fields, such as signal processing and data compression. Dahmen is also recognized for his work on splines, a type of piecewise polynomial function that is widely used in computer graphics, data fitting, and numerical mathematics.

Wolfgang Kroll is a notable figure associated with the field of computer science, particularly in the area of computer security and cryptography. He is well-known for his contributions to the development of algorithms and protocols that enhance data security, including cryptographic techniques used for secure communications and data protection.

World Telecommunication and Information Society Day (WTISD) is observed annually on May 17. It commemorates the founding of the International Telecommunication Union (ITU) in 1865 and the signing of the first International Telegraph Convention. The day aims to raise awareness about the importance of telecommunications and information and communication technologies (ICT) in contemporary society.