The simplicial complex recognition problem is a computational problem in the field of algebraic topology and combinatorics. It involves determining whether a given combinatorial structure (often represented as a set of vertices and a set of simplices) qualifies as a simplicial complex. ### Key Concepts: 1. **Simplices**: These are the building blocks of simplicial complexes.
Bloch's theorem, which is often discussed in the context of complex analysis and the theory of analytic functions, states that if \( f \) is a holomorphic function (analytic function) defined on a simply connected open subset \( D \subset \mathbb{C} \), and if \( f \) is not constant, then for any point \( z_0 \in D \), there exists a neighborhood \( U \) of \( z_0 \) such that the image \(
The P versus NP problem is one of the most important unsolved problems in computer science and mathematics, specifically in the field of computational complexity theory. It asks whether every problem whose solution can be quickly verified (in polynomial time) by a computer can also be quickly solved (in polynomial time) by a computer. Here's a breakdown of the key concepts: - **P Class**: This represents the set of problems for which a solution can be found in polynomial time.
The Skolem problem is a decision problem in mathematical logic concerning the satisfiability of certain types of logical formulas, particularly those expressed in first-order logic. Named after the mathematician Thoralf Skolem, the problem deals specifically with the question of whether a given first-order formula (often in prenex normal form, which has all its quantifiers at the front) has a model (i.e., an interpretation under which the formula is true).
Anouar Benmalek is a Moroccan-French author and poet known for his literary works that often explore themes of identity, culture, and the complexities of modern life. His writing has been recognized for its poetic qualities and depth, addressing both personal and societal issues. Benmalek has contributed to various literary forms, including novels, essays, and poetry, and has been involved in literary and cultural discussions, particularly concerning the experiences of people from North Africa and the Arab world in contemporary society.
Chow's theorem, named after the mathematician Wei-Liang Chow, is a result in complex geometry that relates to the theory of complex manifolds. Specifically, it characterizes conditions under which a complex manifold can be represented as a projective algebraic variety.
The history of Chinese mathematics is rich and spans several centuries, with significant contributions from mathematicians in various eras. Here's a brief overview of Chinese mathematicians by century: ### Ancient Period (Pre-1st Century AD) - **Sunzi (Sun Tzu)**: Author of "Sunzi Suanjing" (The Mathematical Classic of Sunzi), possibly dating from the 3rd century AD but reflecting earlier traditions. His work includes early methods of solving linear equations.
Chen Mufa is a traditional Chinese technique used in calligraphy and painting, particularly associated with the Chen school of Chinese painting. It encompasses various styles and methods that emphasize the fluidity and expressiveness of brushwork, often focusing on the depiction of landscapes, flowers, and birds.
Li Yingshi is not a widely recognized term or name in English-language sources. It could refer to a specific individual, a concept, or a term in Chinese culture or history.
Tianxin Cai, also known as Tianxin Cabbage or Tianxin Vegetable, is a variety of leafy green vegetable popular in certain regions of Asia, particularly in China. It is characterized by its tender leaves and slightly peppery flavor, making it a versatile ingredient in various dishes, including stir-fries, soups, and salads.
Zhongwei Shen is a term that can refer to various topics, including names of people, places, or concepts in Chinese culture or language. However, without specific context, it is not immediately clear which Zhongwei Shen you are referring to.
A half-month typically refers to a period of approximately 15 days, which is half of a standard month that usually has around 30 days. In practical applications, particularly in finance and accounting, a half-month can be used to calculate pro-rated expenses, payroll periods, and other time-sensitive transactions. For example, if a payment or billing cycle is set to occur monthly, half-month calculations might apply for situations where services are rendered for only part of the month.
A long weekend typically refers to a weekend that is extended by one or more days due to a public holiday falling on either the preceding Friday or the following Monday. For example, if a holiday occurs on a Friday, it creates a three-day weekend (Friday, Saturday, and Sunday). Similarly, if the holiday falls on a Monday, it also results in a long weekend.
A lunar month is the duration of one complete cycle of the Moon's phases, which occurs as the Moon orbits the Earth. This cycle typically lasts about 29.5 days, and it can vary slightly. There are different ways to define a lunar month: 1. **Synodic Month**: This is the most commonly referred to lunar month, lasting about 29.53 days. It is the time it takes for the Moon to return to the same phase (e.g.
The solar cycle, also known as the solar magnetic cycle, refers to the roughly 11-year cycle in which the Sun's magnetic activity increases and decreases. This cycle is marked by variations in solar phenomena such as sunspots, solar flares, coronal mass ejections, and solar radiation. The solar cycle affects solar irradiance, magnetic field configurations, and solar wind, which can have significant impacts on space weather and, in turn, influence Earth’s magnetic field and atmospheric conditions.
"Ten Thousand Years" can refer to various concepts depending on the context. Here are a few potential interpretations: 1. **Time Duration**: It simply refers to a span of 10,000 years, which can be significant in historical, geological, or evolutionary contexts. 2. **Cultural or Religious References**: Some cultures, religions, or mythologies may have stories or beliefs spanning 10,000 years, often relating to creation, cycles of history, or prophecy.
Pinned article: ourbigbook/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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.Figure 3. Visual Studio Code extension installation.Figure 5. . 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. - Infinitely deep tables of contents:
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