The graph coloring game is a two-player combinatorial game based on the principles of graph theory. In this game, players take turns coloring the vertices of a graph with the goal of ensuring that no two adjacent vertices share the same color. ### Key Components of the Game 1. **Graph**: The game is played on a finite graph, which consists of a set of vertices (nodes) connected by edges (lines).
Graph distance refers to a measure of distance between nodes (or vertices) in a graph. In graph theory, nodes are the individual entities (like cities, web pages, etc.), and edges are the connections or relationships between these entities. There are a few different interpretations and methodologies for calculating graph distance, depending on the type of graph and the specific context: 1. **Shortest Path Distance**: The most common definition of graph distance is the shortest path distance between two nodes.
Graph rewriting is a formalism used in computer science and mathematical logic to describe the transformation of graphs based on specific rules or patterns. It involves the application of rewrite rules to modify a graph structure, allowing for the generation of new graphs or the simplification of existing ones. Graph rewriting is utilized in various fields, including programming languages, automated reasoning, and modeling complex systems. ### Key Concepts: 1. **Graphs**: A graph is a collection of nodes (vertices) connected by edges.
Greedy number partitioning is an approach to divide a set of numbers into a specified number of subsets (or partitions) such that the sums of the numbers in each subset are as equal as possible. This problem falls under the category of optimization problems and is often encountered in various fields, including computer science, operations research, and resource allocation. ### Key Concepts: 1. **Objective**: The main goal is to minimize the difference between the maximum and minimum sums of the partitions.
Gregorio Baro appears to refer to a company specializing in manufacturing and selling furniture, particularly a type of wooden furniture often described as high-quality or luxurious. However, the specific details can vary based on the context, as there may be products or services associated with the name that could change over time or be specific to certain regions.
The Grötzsch graph is an important example in graph theory, particularly known for being a minimal example of a triangle-free graph that does not have a 3-coloring. The graph was named after the German mathematician Kurt Grötzsch, who constructed it in 1959. Here are some key characteristics of the Grötzsch graph: 1. **Vertices and Edges**: The Grötzsch graph consists of 11 vertices and 20 edges.
Ground deicing of aircraft refers to the process of removing ice, snow, or frost from an aircraft's surfaces, particularly the wings, tail, and control surfaces, prior to takeoff. This is a crucial procedure during winter or adverse weather conditions, as ice accumulation can significantly affect an aircraft's aerodynamic performance and increase the risk of accidents.
G scale is a model railway scale that represents a scale ratio of 1:22.5, where 1 unit in the model equals 22.5 units in the real world. It is primarily used for outdoor garden railways but can also be used for indoor layouts. G scale models are typically large enough to be easily seen and handled, making them popular among hobbyists who enjoy outdoor trains that can withstand varying weather conditions.
Guided Wave Testing (GWT) is a non-destructive testing (NDT) method used primarily for the inspection of long linear structures, such as pipes, tubes, and storage tanks. It utilizes guided waves—ultrasonic waves that travel along the structure—allowing for the detection of potential flaws or defects over long distances with a minimal number of access points.
Sonoporation is a technique that utilizes ultrasound waves to enhance the permeability of cell membranes, allowing for the introduction of various substances into cells. This method is based on the mechanosensitive response of cell membranes to ultrasound vibrations, which can create transient pores in the cell membrane. When ultrasound energy is applied, it generates acoustic cavitation—small bubbles in the liquid that can rapidly expand and collapse.
Hadwiger's theorem is a fundamental result in graph theory, which relates to the colorability of graphs.
Hamiltonian fluid mechanics is a framework for studying fluid dynamics using the principles of Hamiltonian mechanics, which is a reformulation of classical mechanics. In this approach, fluids are treated analogous to particles in a Hamiltonian system, and the governing equations of fluid motion are derived from a Hamiltonian function, which encapsulates the total energy of the fluid system.
Hancock Seamount is an underwater volcanic feature located in the Pacific Ocean, specifically part of the Hawaiian-Emperor seamount chain. It is situated to the northwest of the Hawaiian Islands and is largely submerged beneath the ocean surface. Seamounts like Hancock are formed from volcanic activity, typically associated with hotspots in the Earth's mantle, and can be significant for marine ecosystems, serving as habitats for various marine life.
Hans Munthe-Kaas is a Norwegian mathematician known for his work in the fields of algebra, topology, and representation theory. He is particularly noted for his contributions to the theory of operads and homotopy theory, as well as his involvement in various mathematical research topics related to these areas.
The Hans Oeschger Medal is an award given by the European Geosciences Union (EGU) to recognize outstanding achievements in the field of climate research. Established to honor the contributions of Swiss scientist Hans Oeschger, who was a pioneer in the study of climate change and paleoclimatology, the medal is awarded to scientists who have made significant contributions to understanding the climate system and its variability over time.
Harald Wergeland is a cultural figure in Norway, primarily known as a poet, playwright, and literary scholar. His contributions to Norwegian literature and theater are significant, as he is considered an important part of the country's literary heritage. Wergeland's work often reflects themes of nationalism, social issues, and the human experience, making him a key figure in 19th-century Norwegian literature.
A health indicator is a measurable characteristic or variable that provides insights into the health status of individuals, populations, or communities. Health indicators can be used to assess health outcomes, risks, and behaviors, as well as the effectiveness of health interventions and policies. They serve as vital tools for public health monitoring, research, and decision-making.
Heavy ion fusion is a type of nuclear fusion that involves the use of heavy ionsatomic nuclei that are relatively large and carry a positive charge—to induce fusion reactions in other nuclei. This approach is often studied in the context of achieving controlled nuclear fusion for energy production or for basic research in nuclear physics.
A heavy snow warning is a weather alert issued by meteorological agencies to indicate that significant snowfall is expected over a specific area within a certain timeframe. This warning typically means that accumulations of a certain amount of snow (often defined by local criteria) are anticipated, which could lead to hazardous conditions such as difficult travel, reduced visibility, and potential impacts on infrastructure and services. The criteria for what constitutes a heavy snow warning can vary by region due to differences in climate and typical weather patterns.

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