The Mandelbrot set is a famous and visually stunning fractal named after the mathematician Benoit Mandelbrot. It is defined in the complex number plane and is created by iterating a simple mathematical formula.

Fedor Zaytsev does not appear to be a widely recognized figure in public knowledge or notable events as of my last update in October 2023. It’s possible that he could be a private individual, an emerging public figure, or relevant in a specific niche that hasn't gained broader attention.

Distributed computing problems refer to challenges and issues that arise when multiple computers or nodes work together to perform computations and process data simultaneously, rather than relying on a single centralized system. These problems can encompass a variety of areas, including: 1. **Concurrency**: Managing access to shared resources and ensuring that processes can run in parallel without interfering with each other. 2. **Communication**: Facilitating efficient data exchange between distributed nodes, which may have different networks, protocols, or formats.

NL-complete problems are a class of decision problems that are both in the complexity class NL (nondeterministic logarithmic space) and are as hard as the hardest problems in NL. The concept of NL-completeness is similar to that of NP-completeness, but with respect to problems that can be solved using a restricted amount of memory.

P-complete problems are a class of problems in computational complexity theory that are considered to be the "hardest" problems within the complexity class P, which consists of all decision problems that can be solved in polynomial time by a deterministic Turing machine.

PSPACE-complete problems are a class of decision problems that are both in the complexity class PSPACE and are as "hard" as the hardest problems in PSPACE. Here’s a breakdown of relevant concepts: 1. **Complexity Classes**: - **PSPACE**: This class includes all decision problems that can be solved by a Turing machine using a polynomial amount of space.

TODO can anything interesting and deep be said about "why phase transition happens?" physics.stackexchange.com/questions/29128/what-causes-a-phase-transition on Physics Stack Exchange

"AI-complete" is a term used in the field of artificial intelligence to describe problems that are as hard as the general problem of artificial intelligence itself. Essentially, a problem is considered AI-complete if solving it would require the full capabilities of artificial intelligence, including aspects like perception, reasoning, learning, and possibly even consciousness. The idea is that if one could solve an AI-complete problem, they would likely also have created a system that possesses general intelligence, akin to human cognitive abilities.

Philip Woodward is a name that might refer to different individuals or topics, depending on the context. One notable Philip Woodward is an influential figure in the field of mathematics and statistics, particularly associated with work in statistical theory and applications. He has made significant contributions to areas like prognostics and health management.

The 20th century saw several notable Swiss physicists who made significant contributions to various fields of physics. Here are a few prominent figures: 1. **Albert Einstein (1879–1955)**: Probably the most famous physicist of the 20th century, Einstein was born in Germany but became a Swiss citizen in 1901. He developed the theory of relativity, which revolutionized our understanding of space, time, and gravity.

The Pinkerton Lecture is an academic event that typically features a distinguished speaker who addresses topics related to civil liberties, constitutional law, or similar areas of interest. The lecture is often part of a series established to honor significant contributions to public discourse and scholarship in these fields. Various institutions, such as universities or law schools, may host the Pinkerton Lecture, and it could focus on contemporary issues, historical perspectives, or theoretical discussions relevant to civil rights and liberties.

PPAD (Polynomial Parity Arguments on Directed graphs) is a complexity class in computational complexity theory. It is defined as the class of decision problems for which a solution can be verified in polynomial time and is related to the existence of solutions based upon certain parity arguments. A problem is considered PPAD-complete if it is in PPAD and every problem in PPAD can be reduced to it in polynomial time.

Plessey Code, also known as Plessey bar code or Plessey weight code, is a type of barcode that was developed in the 1970s in the United Kingdom by the Plessey Company. It is primarily used for encoding numeric data and is commonly utilized in various applications, including retail and inventory management.