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Vi Hart
Victoria Hart (born 1988), commonly known as Vi Hart (), is an American mathematician and YouTuber. They describe themselves as a "recreational mathemusician" and are well-known for creating mathematical videos on YouTube. Hart founded the virtual reality research group eleVR and has co-authored several research papers on computational geometry and the mathematics of paper folding. Together with another YouTube mathematics popularizer, Matt Parker, Hart won the 2018 Communications Award of the Joint Policy Board for Mathematics for "entertaining, thought-provoking mathematics and music videos on YouTube that explain mathematical concepts through doodles". Early life and education Hart is the child of mathematical sculptor George W. Hart, and received a degree in music at Stony Brook University. Hart identifies as "gender agnostic"; in a video released in 2015, they spoke about their lack of gender identity—including lacking non-binary identities such as ''agender''—and thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salon (website)
''Salon'' is an American politically progressive/liberal news and opinion website created in 1995. It publishes articles on U.S. politics, culture, and current events. Content and coverage ''Salon'' covers a variety of topics, including reviews and articles about books, films, and music; articles about "modern life", including friendships, human sexual behavior, and relationships; and reviews and articles about technology, with a particular focus on the free and open-source software (FOSS) movement. According to the senior contributing writer for the ''American Journalism Review'', Paul Farhi, ''Salon'' offers "provocative (if predictably liberal) political commentary and lots of sex." In 2008, ''Salon'' launched the interactive initiative ''Open Salon'', a social content site/blog network for its readers. Originally a curated site with some of its content being featured on ''Salon'', it fell into editorial neglect and was closed in March 2015. Responding to the question ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Advancement Research Community
Y Combinator (YC) is an American technology startup accelerator launched in March 2005. It has been used to launch more than 3,000 companies, including Airbnb, Coinbase, Cruise, DoorDash, Dropbox, Instacart, Quora, PagerDuty, Reddit, Stripe and Twitch. The combined valuation of the top YC companies was more than $300 billion by January 2021. The company's accelerator program started in Boston and Mountain View, expanded to San Francisco in 2019, and has been entirely online since the start of the COVID-19 pandemic. ''Forbes'' characterized the company in 2012 as one of the most successful startup accelerators in Silicon Valley. History Y Combinator was founded in 2005 by Paul Graham, Jessica Livingston, Robert Tappan Morris, and Trevor Blackwell. From 2005 to 2008, one program was in Cambridge, Massachusetts, and one was in Mountain View, California. As Y Combinator grew to 40 investments per year, running two programs became too much. In January 2009, Y Combinator anno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Y Combinator (company)
Y Combinator (YC) is an American technology startup accelerator launched in March 2005. It has been used to launch more than 3,000 companies, including Airbnb, Coinbase, Cruise, DoorDash, Dropbox, Instacart, Quora, PagerDuty, Reddit, Stripe and Twitch. The combined valuation of the top YC companies was more than $300 billion by January 2021. The company's accelerator program started in Boston and Mountain View, expanded to San Francisco in 2019, and has been entirely online since the start of the COVID-19 pandemic. ''Forbes'' characterized the company in 2012 as one of the most successful startup accelerators in Silicon Valley. History Y Combinator was founded in 2005 by Paul Graham, Jessica Livingston, Robert Tappan Morris, and Trevor Blackwell. From 2005 to 2008, one program was in Cambridge, Massachusetts, and one was in Mountain View, California. As Y Combinator grew to 40 investments per year, running two programs became too much. In January 2009, Y Combinator an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Schelling
Thomas Crombie Schelling (April 14, 1921 – December 13, 2016) was an American economist and professor of foreign policy, national security, nuclear strategy, and arms control at the School of Public Policy at University of Maryland, College Park. He was also co-faculty at the New England Complex Systems Institute. He was awarded the 2005 Nobel Memorial Prize in Economic Sciences (shared with Robert Aumann) for "having enhanced our understanding of conflict and cooperation through game-theory analysis." Biography Early years Schelling was born on April 14, 1921 in Oakland, California. Schelling graduated from San Diego High. He received his bachelor's degree in economics from the University of California, Berkeley in 1944. He received his PhD in economics from Harvard University in 1951. Career Schelling served with the Marshall Plan in Europe, the White House, and the Executive Office of the President from 1948 to 1953. He wrote most of his dissertation on national income ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicky Case
Nicky Case is a genderqueer Canadian indie game developer best known for developing video games such as '' Coming Out Simulator'' and ''Parable of the Polygons'', both released in 2014. Case's most recent game, ''Adventures with Anxiety'' was released in 2019. ''Adventures with Anxiety'' is an interactive choose-your-own-adventure narrative game. Case's works are characterised by their interactive design and the recurring goal to “.. help people understand complex systems.” Besides designing and developing games, Case is active on their website and blog, regularly updating posts, short stories and comics about mental health, games and media culture, and recently, COVID-19 safety. They also post blogs teaching others math, how to code and how to make games. Personal life Case is non-binary and has chosen to be referred to in gender-neutral terms, expressing a lack of preference for pronouns. They were born in Singapore and moved with their family to Vancouver when they were y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parable Of The Polygons
''Parable of the Polygons'' is a 2014 explorable explanation created by Vi Hart and Nicky Case. The article focuses on a society of blue squares and yellow triangles which have slight personal biases against diversity, which leads to social segregation. It is based on game theorist Thomas Schelling's papers about residential segregation. The article was well-received, especially its visual and playable aspects, and was called a useful educational tool for topics like racial segregation. Content The article is an interactive blog post, "part story and part game". It has a model consisting of a society of blue squares and yellow triangles, presented in a grid. At the top of the article, a crowd of triangles and squares are wiggling. Just under, it says, "This is a story of how harmless choices can make a harmful world." The article first demonstrates step-by-step how institutional bias can occur even when there is little personal bias against diversity, and individuals are well ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oculus Rift
Oculus Rift is a discontinued line of virtual reality headsets developed and manufactured by Oculus VR, a division of Meta Platforms, released on March 28, 2016. In 2012 Oculus initiated a Kickstarter campaign to fund the Rift's development, after being founded as an independent company two months prior. The project proved successful, raising almost from around 10,000 contributors. Then in March 2014, Oculus was purchased by Facebook for $2 billion.Gleasure, R., & Feller, J. (2016). A Rift in the Ground: Theorizing the Evolution of Anchor Values in Crowdfunding Communities through the Oculus Rift Case Study. Journal of the Association for Information Systems, 17(10), 708-736. The Rift went through various pre-production models since the Kickstarter campaign, around five of which were demonstrated to the public before reaching its commercial release. Two of these models were shipped to backers, labelled as development kits; the DK1 in mid 2013 and DK2 in mid-2014, intended to p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Source
Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized software development model that encourages open collaboration. A main principle of open-source software development is peer production, with products such as source code, blueprints, and documentation freely available to the public. The open-source movement in software began as a response to the limitations of proprietary code. The model is used for projects such as in open-source appropriate technology, and open-source drug discovery. Open source promotes universal access via an open-source or free license to a product's design or blueprint, and universal redistribution of that design or blueprint. Before the phrase ''open source'' became widely adopted, developers and producers have used a variety of other terms. ''Open source'' gained ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Reality Headset
A virtual reality headset (or VR headset) is a head-mounted device that provides virtual reality for the wearer. VR headsets are widely used with VR video games but they are also used in other applications, including simulators and trainers. VR headsets typically include a stereoscopic display (providing separate images for each eye), stereo sound, and sensors like accelerometers and gyroscopes for tracking the pose of the user's head to match the orientation of the virtual camera with the user's eye positions in the real world. Some VR headsets also have eye-tracking sensors and gaming controllers. The VR glasses use a technology called head-tracking, which changes the field of vision as a person turns their head. The technology may not be perfect, as there is latency if the head moves too fast. Still, it does offer an immersive experience. History The Sega VR, announced in 1991 and seen in early 1993 at the Winter CES, was never released for consoles, but was utilized fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stereographic Projection
In mathematics, a stereographic projection is a perspective projection of the sphere, through a specific point on the sphere (the ''pole'' or ''center of projection''), onto a plane (geometry), plane (the ''projection plane'') perpendicular to the diameter through the point. It is a smooth function, smooth, bijection, bijective function (mathematics), function from the entire sphere except the center of projection to the entire plane. It maps circle of a sphere, circles on the sphere to generalised circle, circles or lines on the plane, and is conformal map, conformal, meaning that it preserves angles at which curves meet and thus Local property, locally approximately preserves similarity (geometry), shapes. It is neither isometry, isometric (distance preserving) nor Equiareal map, equiareal (area preserving). The stereographic projection gives a way to representation (mathematics), represent a sphere by a plane. The metric tensor, metric induced metric, induced by the inverse s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4-polytope
In geometry, a 4-polytope (sometimes also called a polychoron, polycell, or polyhedroid) is a four-dimensional polytope. It is a connected and closed figure, composed of lower-dimensional polytopal elements: vertices, edges, faces (polygons), and cells (polyhedra). Each face is shared by exactly two cells. The 4-polytopes were discovered by the Swiss mathematician Ludwig Schläfli before 1853. The two-dimensional analogue of a 4-polytope is a polygon, and the three-dimensional analogue is a polyhedron. Topologically 4-polytopes are closely related to the uniform honeycombs, such as the cubic honeycomb, which tessellate 3-space; similarly the 3D cube is related to the infinite 2D square tiling. Convex 4-polytopes can be ''cut and unfolded'' as nets in 3-space. Definition A 4-polytope is a closed four-dimensional figure. It comprises vertices (corner points), edges, faces and cells. A cell is the three-dimensional analogue of a face, and is therefore a polyhedron. Each fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
