A small appliance is a portable or semi-portable device that is used to perform a specific task in the home, mostly related to cooking, food preparation, cleaning, or personal care. Unlike larger appliances like refrigerators, ovens, or washing machines, small appliances are typically designed to be lightweight and easy to use, often requiring little to no installation.
"Bump and hole" is a term that can have different meanings depending on the context, but it is often associated with construction, civil engineering, or road maintenance, referring to an issue related to road surfaces. When roads develop bumps and holes (or potholes), it can lead to uneven driving surfaces that can be dangerous for vehicles and pedestrians. In a more technical sense, "bump" refers to elevated areas on a surface, while "hole" refers to depressions.
Sobolev mapping refers to the concept of mappings (or functions) between two spaces that belong to Sobolev spaces, which are a class of function spaces that consider both the functions and their weak derivatives.
The Steenrod problem, named after mathematician Norman Steenrod, refers to a question in the field of algebraic topology concerning the properties and structure of cohomology operations. Specifically, it deals with the problem of determining which cohomology operations can be represented by "natural" cohomology operations on spaces, particularly focusing on the stable homotopy category.
A **model category** is a concept from category theory, which is a branch of mathematics that deals with abstract structures and relationships between them. Specifically, a model category provides a framework for doing homotopy theory in a categorical setting. It allows mathematicians to work with "homotopical" concepts such as homotopy equivalences, fibrations, and cofibrations in a systematic way.
Hand tools are tools that are operated by hand, as opposed to being powered by electricity or other sources of energy. They are essential in a variety of trades and crafts, including construction, woodworking, metalworking, gardening, and more. Hand tools can be simple or complex and are often used for tasks such as cutting, shaping, drilling, fastening, and measuring. Common examples of hand tools include: 1. **Hammers** - Used for driving nails or breaking objects.
János Halász is a Hungarian politician known for his involvement in the political landscape of Hungary. He is a member of the Fidesz party, which is a major center-right political party in Hungary, often associated with nationalist and conservative policies. Halász has served in various capacities within the party and has also held positions in the Hungarian National Assembly. His political career includes work on issues related to education, culture, and social policies, among others.
János Hebling is a Hungarian physicist known for his research in the fields of laser technology, photonics, and nanotechnology. He has contributed to various scientific advancements and has been involved in multiple academic and research institutions. His work often focuses on the development of new optical devices and materials, as well as their applications in various technologies.
Isotope hydrology is a branch of hydrology that focuses on the study of the isotopic composition of water to better understand various hydrological processes. It involves the use of stable and radioactive isotopes of elements like hydrogen, oxygen, carbon, and others to investigate water sources, movement, and interactions within the hydrological cycle.
"Leat" can refer to different things depending on the context: 1. **Watercourse**: In historical and geographic contexts, a "leat" is a water channel or conduit used for irrigation, typically to divert water from a river or stream to fields or mills. It is often associated with traditional farming and milling practices.
MIKE FLOOD is a software tool developed by DHI, designed for flood modeling and management. It is part of the MIKE by DHI series of software products that focus on various aspects of water-related challenges. MIKE FLOOD integrates different modeling components to simulate the behavior of water in both urban and rural environments during flood events.
"Omega Hydraulic Diggings" may refer to a specific location or historical mining site, often associated with hydraulic mining techniques. Hydraulic mining was a method used in the 19th century, particularly during the Gold Rushes in places like California, where high-pressure water jets were employed to dislodge rock and soil to extract gold and other minerals. If "Omega Hydraulic Diggings" is a specific site, it might be associated with mining history, showing where such techniques were applied.
John Cocke (1924–2021) was a prominent American computer scientist known for his pioneering work in computer architecture and compiler design. He made significant contributions to the field during the mid-20th century, particularly in the development of techniques that optimize the performance of computer programs. One of Cocke's most notable contributions is the concept of the **RISC (Reduced Instruction Set Computing) architecture**, which he helped to develop at IBM in the 1970s.
Peter Lucas is a computer scientist known for his work in the field of computer programming, software engineering, and artificial intelligence. He has contributed to various areas such as programming languages, compilers, and automated reasoning. One notable aspect of his research is the development of tools and methods for improving software reliability and maintainability. In addition, he may also have been involved in education and academic contributions, possibly authoring textbooks or papers in his areas of expertise.
Ice yachting, also known as ice sailing, is a winter sport that involves racing specially designed sailboats or yachts on frozen bodies of water, such as lakes or rivers. These boats, called ice yachts or iceboats, are equipped with runners (sharp blades) instead of traditional keels and are built to glide over the ice. **Key features of ice yachting include:** 1.
The Corporate Equality Index (CEI) is a benchmarking tool established by the Human Rights Campaign (HRC) to evaluate LGBTQ+ workplace policies and practices. The CEI measures how companies support and protect LGBTQ+ employees through a variety of criteria, including: 1. **Non-Discrimination Policies**: Whether the company has specific policies in place to prohibit discrimination based on sexual orientation and gender identity.
Nayandeep Deka Baruah is a name that may refer to an individual, but there isn't widely available information about them in public or notable contexts. It’s possible that this person might be a private individual or someone not extensively covered in popular media or literature as of my last update in October 2023.
Radhanath Sikdar (1813–1870) was an Indian mathematician and surveyor, best known for his role in the Great Trigonometrical Survey of India. He is particularly noted for being the first person to identify and calculate the height of Mount Everest, which he referred to as "Peak XV.
Manohar Vartak is a name that may refer to an individual in various contexts, but without more specific information, it's unclear which Manohar Vartak you are referring to. One notable figure is Manohar Vartak, an Indian astronomer and author known for his contributions to the field of astronomy and his work related to ancient Indian texts.
Indian bioinformaticians are professionals in India who specialize in bioinformatics, which is an interdisciplinary field that combines biology, computer science, and information technology to analyze and interpret biological data. This area of expertise is vital for managing and understanding the vast amounts of biological information generated in fields such as genomics, proteomics, and systems biology.

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