The Diamond norm is a mathematical tool used primarily in quantum information theory to measure the distance between two quantum channels, or completely positive trace-preserving (CPTP) maps. It provides a way to quantify how distinguishable two quantum processes are when they are applied to quantum states.
"Nothing comes from nothing” is a philosophical and metaphysical concept that suggests that for something to exist or come into being, it must originate from something else. This idea is often associated with the ancient Greek philosopher Parmenides, who argued that existence cannot come from non-existence. The phrase implies that creation or existence requires a prior cause or source. In various contexts, the phrase can be used to discuss issues related to causality, creation, and the nature of existence.
Math rock is a subgenre of rock music characterized by complex rhythms, odd time signatures, and intricate guitar work. It often features off-kilter melodies and a strong emphasis on musicianship and experimentation. Math rock typically blends elements of various genres, including progressive rock, post-rock, punk, and even jazz.
James Moffat is a mathematician known for his contributions to various fields, particularly in mathematics, physics, and cosmology. He is perhaps most recognized for his work on alternative theories of gravity, specifically the Moffat theory of gravity, which seeks to address issues in astrophysics and cosmology, such as the behavior of galaxies and the nature of dark matter.
James Robert McConnell is a figure primarily known for his work in the field of consciousness and the potential for human evolution. He is best known for his writings and ideas about the concept of reincarnation and the continuity of consciousness across lifetimes. McConnell authored a book titled "The Eternal Journey," in which he presents his theories on how consciousness may persist after death and the implications of this for understanding human existence and experience.
Jane Heffernan is not a widely recognized public figure in popular culture, literature, or history as of my last update in October 2023. It's possible that she could refer to a private individual or a lesser-known person in a specific field.
János Aczél was a Hungarian mathematician known for his contributions to various areas of mathematics, particularly in functional equations, fuzzy set theory, and decision theory. Born on February 21, 1925, in Budapest, he became a prominent figure in the mathematical community. His work on functional equations involved exploring how functions behave under certain conditions and constraints, which has applications across multiple fields.
Jim Berger is a prominent statistician known for his contributions to Bayesian statistics, decision theory, and various areas of statistical methodology. He has authored numerous research papers and books, significantly influencing how Bayesian methods are applied in statistical practice. Berger is also recognized for his role in developing educational materials and for his efforts in promoting the understanding of statistical principles. He has held academic positions at various institutions, including Duke University, where he has contributed to both research and teaching in statistics.
John Kemp is a mathematician known for his contributions to the field, particularly in areas related to applied mathematics and optimization. His work may also touch on computational methods and mathematical modeling. However, specific details about his research, publications, and impact in the field may not be widely documented in mainstream mathematical literature.
Joseph Adna Hill was an American statisticians and social scientists known for his work in the field of statistical research and methodologies. He contributed significantly to the development of social statistics and was involved in the early efforts to apply statistical methods to social science research. Hill wrote extensively on topics such as sampling, survey methodology, and the application of statistics in social sciences.
Joseph Francisco is a prominent American mathematician known for his work in fields such as algebra, combinatorics, and mathematical education. He may also be involved in various academic and educational initiatives.
The term "Josephson junction count" typically refers to the number of Josephson junctions in a given superconducting circuit or device. A Josephson junction is a quantum mechanical device made of two superconducting materials separated by a thin insulating barrier. They exhibit unique properties, such as the ability to carry supercurrent without voltage and the phenomenon of the Josephson effect, which is the flow of superconducting current across the junction when a phase difference in the superconducting wavefunction exists.
Franz Mandl is a physicist known for his contributions to theoretical physics, particularly in the area of quantum mechanics and particle physics. He has authored several prominent textbooks that are widely used in educational settings, particularly for university-level courses. One of his well-known works is "Quantum Field Theory," which covers fundamental aspects of the theory, providing a comprehensive introduction to the subject. His textbooks are appreciated for their clear explanations and systematic approach to complex topics.
Karl Scheel is not a widely recognized figure or concept in popular culture or history as of my last update in October 2023. It is possible that the name may refer to a specific individual, potentially someone in academia, literature, or another field, but there is no prominent association with the name that stands out in general knowledge.
Ken Keeler is an American writer and producer best known for his work in the field of animated television, particularly on the show "Futurama." He has been involved in various roles, including writer, director, and executive producer. Keeler is also notable for his educational background; he holds a Ph.D. in applied mathematics from Harvard University, which has influenced his writing and storytelling style.
The Kiel probe, or Kiel apparatus, is a scientific instrument used primarily for the determination of n-alkanes or other volatile organic compounds in mixtures, particularly in petrochemical and environmental analyses. It is a type of micro distillation device designed to analyze and separate components based on their boiling points. The Kiel probe operates under specific temperature and pressure conditions, allowing for the precise extraction of compounds from a sample.
The Koecher–Maass series is a mathematical series that arises in the context of the theory of modular forms and automorphic forms. It is named after mathematicians Martin Koecher and Hans Maass, who contributed to the understanding of modular forms and their properties. The series itself is typically associated with the theory of modular forms on the upper half-plane. These forms are complex functions that are not only continuous but also satisfy certain transformation properties under the action of the modular group.
The Kotcherlakota Rangadhama Rao Memorial Lecture Award is an honor awarded to individuals in recognition of their contributions to the field of anatomy and medicine in India. It commemorates the legacy of Dr. Kotcherlakota Rangadhama Rao, who was a prominent figure in anatomy education and research. The award typically involves a lecture or presentation delivered by the recipient on a specified topic related to anatomy.

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