The Transversality Theorem is a concept from differential topology and differential geometry. It provides conditions under which the intersection of two submanifolds of a manifold is itself a submanifold. The theorem essentially deals with the idea of how two continuous maps, or more generally submanifolds, can intersect in a regular manner, giving rise to a well-defined structure.
A triply periodic minimal surface (TPMS) is a type of surface that is characterized by having minimal surface area while being periodic in three dimensions. This means that the surface can be repeated in space along three independent directions, creating a structure that is infinitely extending in all directions. Triply periodic minimal surfaces are defined mathematically as surfaces that locally minimize area, satisfying the condition of zero mean curvature at every point.
The Weierstrass–Enneper parameterization is a mathematical method used to construct minimal surfaces in differential geometry. Minimal surfaces are surfaces that locally minimize area and have mean curvature equal to zero at every point. The Weierstrass–Enneper representation expresses these surfaces using complex analysis and provides a way to obtain parametric representations of minimal surfaces.
Yau's conjecture, proposed by mathematician Shing-Tung Yau, relates to the study of Kähler manifolds, particularly in the context of complex differential geometry and algebraic geometry. Specifically, it addresses the existence of Kähler metrics with specific curvature properties on complex manifolds. One of the notable forms of Yau's conjecture is concerned with the existence of Kähler-Einstein metrics on Fano manifolds.
An orbifold is a generalization of a manifold that allows for certain types of singularities. More formally, an orbifold can be defined as a space that looks locally like a manifold but may have points where the structure of the space is modified by a finite group acting on it.
"Clutching construction" is not a widely recognized term in standard architectural or construction terminology as of my last knowledge update in October 2021. It could potentially refer to specific techniques or methods in a niche area of construction, or it may have emerged as a new concept or terminology after my last update.
Conley index theory is a branch of dynamical systems and topology that provides a way to study the qualitative behavior of dynamical systems using algebraic topology. Developed primarily by Charles Conley in the 1970s, the Conley index helps to identify invariant sets and study their dynamics in a systematic way. The key concepts in Conley index theory include: 1. **Isolated Invariant Sets**: The theory focuses on isolated invariant sets in dynamical systems.
A critical value is a point in a statistical distribution that helps to determine the threshold for making decisions about null and alternative hypotheses in hypothesis testing. It essentially divides the distribution into regions where you would accept or reject the null hypothesis. Here's how it generally works: 1. **Hypothesis Testing**: In hypothesis testing, you typically have a null hypothesis (H0) that represents a default position, and an alternative hypothesis (H1) that represents a new claim you want to test.
In mathematics, the term "current" can refer to a concept in the field of differential geometry and mathematical analysis, particularly within the context of distribution theory and the theory of differential forms. A current generalizes the notion of a function and can be thought of as a functional that acts on differential forms. **Key Points about Currents:** 1. **Definition**: A current is a continuous linear functional that acts on a space of differential forms.
The Knudsen number (Kn) is a dimensionless quantity used in fluid dynamics and kinetic theory to characterize the flow of gas. It is defined as the ratio of the mean free path of gas molecules to a characteristic length scale, such as the diameter of a pipe or the dimensions of an object through which the gas is flowing.
A glossary of topology is a list of terms and definitions related to the branch of mathematics known as topology. Topology studies properties of space that are preserved under continuous transformations. Here are some key terms commonly found in a topology glossary: 1. **Topology**: A collection of open sets that defines the structure of a space, allowing for the generalization of concepts such as convergence, continuity, and compactness.
Integrability conditions for differential systems are criteria that determine whether a given system of differential equations can be solved in terms of known functions, such as elementary functions or special functions. These conditions assess the feasibility of integrating the equations or finding solutions that satisfy specific constraints. The concept of integrability can be considered from both a theoretical and practical standpoint.
Minimax eversion is a fascinating concept in the field of topology, specifically in the area of differential topology and geometric topology. It refers to a process of turning a disk inside out in a way that minimizes the maximum amount of "stretching" or "distortion" that occurs during the transformation. In more technical terms, eversion means taking a two-dimensional disk and continuously deforming it such that the inside of the disk becomes the outside, without any creases or cuts.
Vector flow generally refers to the representation of flow patterns in a vector field, often used in physics, engineering, and fluid dynamics. It can describe how physical quantities, such as velocity or force, change in space and time. In a more specific context, vector flow can be associated with: 1. **Fluid Dynamics**: In fluid mechanics, vector flow is used to describe the motion of fluids.
The Whitney topology is a specific topology that can be defined on the space of smooth maps (or differential functions) between two smooth manifolds, typically denoted as \(C^\infty(M, N)\), where \(M\) and \(N\) are smooth manifolds. The Whitney topology can also refer to the topology on a space of curves in a manifold, particularly when discussing the space of embeddings of one manifold into another.
An Echelle grating is a type of diffraction grating used in spectroscopy to disperse light into its component wavelengths. It is characterized by having a large number of closely spaced grooves (or lines) that are typically arranged at an angle to maximize the diffraction efficiency. The key features of an Echelle grating include: 1. **High Dispersion**: Echelle gratings are designed to produce a high degree of angular dispersion due to their shallow groove angle and high groove density.
A. C. Grayling is a British philosopher, author, and educator known for his work in philosophy, particularly in ethics, critical thinking, and the philosophy of humanism. He was born on April 3, 1949, and has written numerous books, essays, and articles covering a wide range of topics, including philosophy, literature, and public affairs. Grayling is also the co-founder of the New College of the Humanities in London, where he serves as the Master.
Topological degree theory is a branch of mathematics, particularly within the field of topology and functional analysis, that deals with the concept of the degree of a continuous mapping between topological spaces. It provides a way to classify the behavior of functions, particularly in terms of their zeros, and to establish the existence of solutions to certain types of equations.
Dark-field X-ray microscopy is an advanced imaging technique that exploits X-ray scattering to visualize small structures or features in samples, particularly biological specimens and materials at the nanoscale. This method is distinct from traditional X-ray imaging, which typically relies on transmitted X-rays to create images. ### Key Features of Dark-field X-ray Microscopy: 1. **Scattering Detection**: In dark-field configurations, the microscope is designed to detect scattered X-rays rather than those that pass straight through the sample.
"Discoveries" by Jost Jahn is a work that combines elements of adventure, exploration, and personal reflection. The book often explores themes related to scientific discovery, the quest for knowledge, and the profound impact of exploration on human understanding of the world. Jost Jahn may weave in narratives from his own experiences or those of others, emphasizing the importance of curiosity and the pursuit of new ideas.

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