Michael Turelli is an American biologist and professor known for his work in evolutionary biology, particularly in the fields of population genetics and evolutionary theory. His research often focuses on the genetic and ecological dynamics of species, including studies on speciation, the role of genetic variation in adaptation, and the maintenance of genetic diversity in populations. He has made contributions to our understanding of how evolutionary processes shape biological diversity.
Steven S. Andrews could refer to various individuals or a specific person, but without additional context, it is difficult to provide a precise answer. If you are referring to a notable figure in a particular field such as science, literature, business, or another area, please provide more details or context to help identify which Steven S.
Stuart Kauffman is an American theoretical biologist, complex systems researcher, and author known for his work in the fields of biology, evolution, and the origins of life. He is a prominent figure in complexity science and is known for his concepts related to self-organization, emergent behavior in biological systems, and the origins of biological complexity.
The Cox-Ingersoll-Ross (CIR) model is a mathematical model used to describe the dynamics of interest rates. It is part of the class of affine term structure models and is particularly known for its ability to capture the behavior of interest rates in a way that ensures non-negative rates. The CIR model was introduced by economists David Cox, Jonathan Ingersoll, and Stephen Ross in the early 1980s.
The Spin group is a type of mathematical group that plays a key role in the field of theoretical physics and geometry, particularly in the study of rotations and angular momentum in quantum mechanics and the theory of relativity. 1. **Definition**: The Spin group, often denoted as \( \text{Spin}(n) \), is the double cover of the special orthogonal group \( \text{SO}(n) \).
Cyclic symmetry in three dimensions refers to a specific type of symmetry exhibited by certain three-dimensional objects or systems. In general, cyclic symmetry implies that an object looks the same after being rotated by a certain angle around a specific axis.
Fock–Lorentz symmetry is a specific type of symmetry that arises in the context of relativistic quantum mechanics and quantum field theory. It relates to how physical systems behave under Lorentz transformations, which are mathematically expressed as the transformations that relate the coordinates of events in one inertial frame to those in another moving at a constant velocity relative to the first.
The symmetric group, often denoted as \( S_n \), is a group that consists of all possible permutations of a finite set of \( n \) elements. The group's operation is the composition of these permutations.
Residence time in statistics, particularly in the context of queues, systems, or processes, refers to the average amount of time that an entity (like a customer, particle, or molecule) spends in a defined system or process from entry to exit. It can be used in various fields, including ecology, physics, and engineering. In queueing theory, for example, residence time may encompass the time spent waiting in a queue and the time spent being serviced.
The International Symposium on Fundamentals of Computation Theory (FCT) is a biennial academic conference that focuses on various aspects of theoretical computer science, particularly those related to computation theory. The symposium brings together researchers and academics from around the world to discuss recent developments, share their findings, and foster collaboration in areas such as algorithms, complexity theory, formal languages, automata theory, and related topics.
Li Huatian does not parece to be a widely recognized term or concept as of my last knowledge update in October 2023. It might refer to a person, place, or specific term that is not commonly known or documented.
Hamiltonian mechanics by Ciro Santilli 40 Updated 2025-07-16
Equivalent to Lagrangian mechanics but formulated in a different way.
TODO understand original historical motivation, www.youtube.com/watch?v=SZXHoWwBcDc says it is from optics.
Intuitively, the Hamiltonian is the total energy of the system in terms of arbitrary parameters, a bit like Lagrangian mechanics.
Kavitha Telikepalli is an Indian entrepreneur, consultant, and advocate known for her work in various industries. She has made significant contributions as a motivational speaker and has been involved in initiatives aimed at empowering women and supporting technological advancements.
Rūsiņš Mārtiņš Freivalds appears to refer to an individual, but there is limited publicly available information about him as of my last training cutoff in October 2021. If he has gained prominence or relevance in specific fields after that time, I wouldn't have that updated information.
Stefan Szeider is a computer scientist known for his work in the fields of algorithmic graph theory, optimization, and parameterized complexity. He has made significant contributions to understanding the complexity of various computational problems, particularly in relation to graph structures. His research often focuses on developing algorithms that tackle NP-hard problems and exploring the interplay between algorithmic techniques and theoretical computer science.
Subhash Khot is a prominent theoretical computer scientist known for his contributions to complexity theory and approximation algorithms. He is a professor at New York University and has conducted significant research in areas such as hardness of approximation, interactive proof systems, and the development of algorithms. He is particularly recognized for his work on the PCP theorem (Probabilistically Checkable Proofs) and for advances in the field of quantum computing.
Victor Shoup is a prominent figure in the field of computer science, particularly known for his contributions to cryptography. He is recognized for his work on various cryptographic algorithms and protocols, as well as for his contributions to the theoretical underpinnings of cryptography. Shoup has been involved in academic research and has published numerous papers on topics such as digital signatures, encryption schemes, and security assumptions in cryptographic systems.
Gödel numbering is a formal method introduced by the mathematician Kurt Gödel in his groundbreaking incompleteness theorems. It assigns a unique natural number to each symbol and well-formed formula in a formal mathematical language, allowing statements about these formulas to be expressed as statements about numbers. The process works as follows: 1. **Assign Numbers to Symbols**: Each basic symbol in the formal language (like logical operators, variables, parentheses, etc.) is assigned a distinct natural number.
The fields of computability and complexity are rich with various topics that explore the limits of computation and the classification of problems based on their inherent difficulty. Here’s a comprehensive list of topics associated with these fields: ### Computability Theory Topics 1. **Turing Machines**: The foundational model of computation. 2. **Recursive Functions**: Functions computable by an algorithm, including primitives and general recursive functions.
A laser level is a tool used in construction, surveying, and various other industries to establish a straight and level reference line or point. It employs a laser beam to project a line or dot onto a surface, allowing users to accurately measure and align installations, such as cabinets, shelves, or flooring. ### Types of Laser Levels: 1. **Line Laser Levels**: Projects a straight line of laser light along a horizontal or vertical plane. These are useful for tasks like aligning cabinets or marking walls.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 2.
    You can publish local OurBigBook lightweight markup files to either https://OurBigBook.com or as a static website
    .
    Figure 3.
    Visual Studio Code extension installation
    .
    Figure 4.
    Visual Studio Code extension tree navigation
    .
    Figure 5.
    Web editor
    . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
    Video 4.
    OurBigBook Visual Studio Code extension editing and navigation demo
    . Source.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact