Almost 400 years ago, in "The Assayer," Galileo wrote: "Philosophy is written in this grand book, the universe … [But the book] is written in the language of mathematics." He was much more than an astronomer, and this can ...
Mathematics
Apr 11, 2022
0
472
An international team of interdisciplinary researchers has identified mathematical metrics to characterize the fragility of financial markets. Their paper "Network geometry and market instability" sheds light on the higher-order ...
Mathematics
Mar 22, 2021
2
26
Traditionally, a quantum harmonic oscillator model is used to describe the tiny vibrations in a diatomic molecule, but the description is also universal in the sense that it can be extended to a variety of other situations ...
The second cancer victim in a year to win a surprise victory against US pesticide maker Monsanto raises the prospect of a flood of similar lawsuits, potentially leaving the firm's new German owner Bayer with a major case ...
Business
Mar 20, 2019
0
14
(PhysOrg.com) -- The stock price of a company continuously changes, going up or down depending on the collective activity of a large number of investors. Although this process seems fairly straightforward, no one fully understands ...
At the current pace of research and development, global oil will run out 90 years before replacement technologies are ready, says a new University of California, Davis, study based on stock market expectations.
Environment
Nov 9, 2010
73
0
We are all familiar with many instances of statistics in everyday life: the statistics of sport, weather, population, the stock market … the sort of thing that might appear in the "number crunch" column in The Age and The ...
Mathematics
Jul 1, 2014
2
0
(Phys.org)—A small team of researchers with members from Universidad de Granada and Princeton University has found that adding some uncertainty to computer models meant to predict catastrophes such as stock market crashes, ...
From the perspective of complex systems, a range of events – from chemistry and biology to extreme weather and population ecology – can be viewed as large-scale self-emergent phenomena that occur as a consequence of deteriorating ...
A new study published in Financial Innovation has developed a novel quantum model for stock market fluctuations that incorporates economic uncertainty and herding behavior. The study aims to provide a deeper understanding ...
Economics & Business
Jan 9, 2024
0
56
A stock market is a public market for the trading of company stock and derivatives at an agreed price; these are securities listed on a stock exchange as well as those only traded privately.
The size of the world stock market was estimated at about $36.6 trillion US at the beginning of October 2008. The total world derivatives market has been estimated at about $791 trillion face or nominal value, 11 times the size of the entire world economy. The value of the derivatives market, because it is stated in terms of notional values, cannot be directly compared to a stock or a fixed income security, which traditionally refers to an actual value. Moreover, the vast majority of derivatives 'cancel' each other out (i.e., a derivative 'bet' on an event occurring is offset by a comparable derivative 'bet' on the event not occurring.). Many such relatively illiquid securities are valued as marked to model, rather than an actual market price.
The stocks are listed and traded on stock exchanges which are entities of a corporation or mutual organization specialized in the business of bringing buyers and sellers of the organizations to a listing of stocks and securities together. The stock market in the United States includes the trading of all securities listed on the NYSE Euronext, the NASDAQ, the Amex, as well as on the many regional exchanges, e.g. OTCBB and Pink Sheets. European examples of stock exchanges include the London Stock Exchange, the Deutsche Börse.
This text uses material from Wikipedia, licensed under CC BY-SA
