Implied volatility (IV) is a measure used in the financial markets to indicate the market's expectation of the future volatility of an asset, usually associated with options pricing. Unlike historical volatility, which measures past price fluctuations, implied volatility reflects the market's forecast of how much an asset's price is likely to move in the future.
The mortgage constant, also known as the mortgage capitalization rate or the mortgage factor, is a financial metric used to calculate the annual debt service (the total amount of principal and interest payments) on a mortgage loan as a percentage of the total loan amount. It provides a way to express the cost of borrowing in relation to the loan amount and is useful in determining the impact of mortgage payments on cash flow for real estate investments.
The Simple Dietz method is a formula used in finance to calculate the time-weighted rate of return for an investment portfolio. It is particularly useful for measuring performance over a period when there are cash flows (deposits and withdrawals) into or out of the portfolio. The method attributes returns to the average capital invested over a specific period by accounting for the timing and size of these cash flows. Its main advantage is that it does not require detailed tracking of each individual cash flow.
Stochastic drift refers to a phenomenon in stochastic processes where a variable exhibits a tendency to change or "drift" over time due to random influences. In mathematical terms, it often describes the behavior of a stochastic process, particularly in the context of diffusion processes or time series analysis. The concept of stochastic drift is commonly associated with models like the Geometric Brownian Motion (GBM), which is frequently used in finance to model asset prices.
Complex systems scientists study complex systems, which are systems composed of many interconnected parts that interact in non-linear ways. These systems can be found in various fields such as biology, ecology, economics, sociology, neuroscience, and engineering, among others. The primary focus of complex systems science is to understand how these interactions lead to emergent behaviors and properties that cannot be understood simply by looking at the individual components in isolation.
Hesperus is a name from classical mythology that refers to the evening star, which is identified with the planet Venus when it is visible in the evening sky. The term is derived from the Greek word "Hesperos." In Greek mythology, Hesperus was often depicted as a personification of the evening star and was sometimes associated with the beautiful sunset. The name has also been used in various literary and philosophical contexts, including references by poets and philosophers such as Plato and Hesiod.
An agent-based model (ABM) is a computational model used to simulate the interactions of individual entities, known as agents, which can represent various real-world entities such as people, animals, organizations, or even groups. Each agent operates based on a set of defined rules and behaviors, allowing for the emergence of complex phenomena through local interactions. ### Key Features of Agent-Based Models: 1. **Agents**: The fundamental components of ABMs.
DYNAMO is a programming language designed for energy and building performance simulations, primarily used within the context of architectural design and analysis. It is a visual programming tool that allows users to create algorithms and workflows without needing extensive coding knowledge. DYNAMO is often associated with the software Autodesk Revit, where it is utilized to enhance parametric design, automate repetitive tasks, and facilitate data manipulation within the building information modeling (BIM) process.
Dynamical systems theory is a mathematical framework used to describe the behavior of complex systems that evolve over time according to specific rules or laws. It provides tools and concepts for analyzing how systems change, often characterized by equations that describe their dynamics. This field encompasses a wide variety of systems in different areas, including physics, biology, economics, engineering, and more.
Programming complexity, also known as computational complexity, refers to the resources required for a program to execute, particularly in terms of time and space. Understanding programming complexity is essential in evaluating the efficiency and feasibility of algorithms and software solutions. Here are some key concepts associated with programming complexity: 1. **Time Complexity**: - **Definition**: This measures the amount of time an algorithm takes to complete as a function of the size of the input data.
X-ray notation is a system used in the field of crystallography to describe the arrangement of atoms in a crystal lattice. It is particularly useful in the analysis of X-ray diffraction patterns obtained from crystalline materials. The notation typically includes the identification of crystal planes and directions in terms of Miller indices. Miller indices are a set of three integers (h, k, l) that denote the orientation of a plane in a crystal lattice.
A sociocultural system refers to the complex interplay between social and cultural factors that influence the behavior, beliefs, and practices of a group or society. It encompasses the ways in which social structures, institutions, values, norms, and cultural traditions shape human interactions and societal organization. Key elements of a sociocultural system include: 1. **Society**: The collective of individuals who form a community, sharing common social structures such as family, education, and governance.
The Eye and ENT Hospital of Fudan University, officially known as the Fudan University Eye and ENT Hospital, is a specialized medical institution in Shanghai, China. It focuses on medical, surgical, and educational services related to eye and ear, nose, and throat health. As part of Fudan University, one of China's prestigious academic institutions, the hospital is involved in teaching and research in these fields.
Al-Ashraf Umar II was an important figure in the history of the Mamluk Sultanate in Egypt and Syria. He served as the Sultan from 1434 to 1445. His reign is noted for its efforts to maintain stability in the region and handle internal and external challenges, including conflicts with the Ottoman Empire. Umar II is often recognized for his attempts to reform the administration and military of the Mamluk state.
Eduard Prugovečki is a mathematician known for his work in areas such as logic, set theory, and mathematical foundations. He has contributed to various mathematical topics, including the study of nonstandard analysis and mathematical logic. Prugovečki is also recognized for his writings and textbooks that address complex mathematical concepts, making them more accessible to students and researchers.
Abu Muhammad al-Hasan al-Hamdani was a notable Arab scholar, poet, and historian from the 10th century. He was born in the region that is present-day Yemen. Al-Hamdani is particularly recognized for his works in geography, history, and poetry, and he is often credited with significant contributions to the understanding of the Arabian Peninsula and its cultures during the Islamic Golden Age.
The Brumer-Stark conjecture is a significant hypothesis in number theory that relates to the structure of abelian extensions of number fields and their class groups. It plays a crucial role in the study of L-functions and their special values, specifically in the context of p-adic L-functions and the behavior of class numbers. The conjecture can be understood in relation to certain aspects of class field theory.
Matej Pavšič is a name that could refer to various individuals, but without specific context, it's challenging to provide precise information. As of my last knowledge update in October 2021, there may not be widely known notable figures by that name.
Apéry's theorem is a result in number theory that concerns the value of the Riemann zeta function at positive integer values. Specifically, the theorem states that the value \(\zeta(3)\), the Riemann zeta function evaluated at 3, is not a rational number. The theorem was proven by Roger Apéry in 1979 and is significant because it was one of the first results to demonstrate that certain values of the zeta function are irrational.

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