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257 (number)
257 (two hundred ndfifty-seven) is the natural number following 256 and preceding 258. In mathematics 257 is a prime number of the form 2^+1, specifically with ''n'' = 3, and therefore a Fermat prime. Thus a regular polygon with 257 sides is constructible with compass and unmarked straightedge. It is currently the second largest known Fermat prime. Analogously, 257 is the third Sierpinski prime of the first kind, of the form n^ + 1 ➜ 4^ + 1 = 257. It is also a balanced prime, an irregular prime, a prime that is one more than a square, and a Jacobsthal–Lucas number. There are exactly 257 combinatorially distinct convex polyhedra with eight vertices (or polyhedral graphs with eight nodes). In other fields *The years 257 and 257 BC *257 is the country calling code for Burundi. See List of country calling codes. *.257 Roberts, rifle cartridge *There is a Pac-Man themed restaurant called Level 257 located in Schaumburg, Illinois. It is in reference to the kill screen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
256 (number)
256 (two hundred ndfifty-six) is the natural number following 255 and preceding 257. In mathematics 256 is a composite number, with the factorization 256 = 28, which makes it a power of two. * 256 is 4 raised to the 4th power, so in tetration notation, 256 is 24. * 256 is a perfect square (162). * 256 is the only 3-digit number that is zenzizenzizenzic. It is 2 to the 8th power or ((2^2)^2)^2. * 256 is the lowest number that is a product of eight prime factors. * 256 is the number of parts in all compositions of 7. In computing One octet (in most cases one byte) is equal to eight bits and has 28 or 256 possible values, counting from 0 to 255. The number 256 often appears in computer applications (especially on 8-bit systems) such as: * The typical number of different values in each color channel of a digital color image (256 values for red, 256 values for green, and 256 values for blue used for 24-bit color) (see color space or Web colors). * The number of colors available i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertex (geometry)
In geometry, a vertex (in plural form: vertices or vertexes) is a point where two or more curves, lines, or edges meet. As a consequence of this definition, the point where two lines meet to form an angle and the corners of polygons and polyhedra are vertices. Definition Of an angle The ''vertex'' of an angle is the point where two rays begin or meet, where two line segments join or meet, where two lines intersect (cross), or any appropriate combination of rays, segments, and lines that result in two straight "sides" meeting at one place. :(3 vols.): (vol. 1), (vol. 2), (vol. 3). Of a polytope A vertex is a corner point of a polygon, polyhedron, or other higher-dimensional polytope, formed by the intersection of edges, faces or facets of the object. In a polygon, a vertex is called " convex" if the internal angle of the polygon (i.e., the angle formed by the two edges at the vertex with the polygon inside the angle) is less than π radians (180°, two right angles); ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pac-Man
originally called ''Puck Man'' in Japan, is a 1980 maze action video game developed and released by Namco for arcades. In North America, the game was released by Midway Manufacturing as part of its licensing agreement with Namco America. The player controls Pac-Man, who must eat all the dots inside an enclosed maze while avoiding four colored ghosts. Eating large flashing dots called "Power Pellets" causes the ghosts to temporarily turn blue, allowing Pac-Man to eat them for bonus points. Game development began in early 1979, directed by Toru Iwatani with a nine-man team. Iwatani wanted to create a game that could appeal to women as well as men, because most video games of the time had themes of war or sports. Although the inspiration for the Pac-Man character was the image of a pizza with a slice removed, Iwatani has said he also rounded out the Japanese character for mouth, kuchi ( ja, 口). The in-game characters were made to be cute and colorful to appeal to younger p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kill Screen
''Kill Screen'' (stylized as ''KILL SCREEN'') was a print and online magazine founded in 2009 by Jamin Warren and Chris Dahlen and owned by Kill Screen Media, Inc. It focused on video games and culture, but also included articles based on entertainment. The name is based on the video game term of the same name. In 2009, both Warren and Dahlen were former writers for ''Pitchfork'' when they decided to found the magazine. After a successful Kickstarter campaign to fund the magazine, the first issue was released in March 2010. After partnerships with ''Pitchfork'', StoryCode and Film Society of Lincoln Center, the magazine eventually founded an annual video game conference, two5six, in 2013. The magazine's website did a redesign in January 2014 and the print magazine itself was redesigned and overhauled after a second successful Kickstarter campaign in November 2015. In 2016, two5six's name was changed to Kill Screen Festival. After 2016, Kill Screen ceased publication, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schaumburg, Illinois
Schaumburg ( ) is a village mostly in Cook County and partly in DuPage County in northeastern Illinois, United States. Per the 2020 Census, the population was 78,723. Schaumburg is around northwest of the Chicago Loop and northwest of O'Hare International Airport. It is part of the Golden Corridor. In 2018 ''Money'' magazine ranked the Village of Schaumburg the Best Place to Live in Illinois. In 2017, ''Money'' ranked Schaumburg the 9th-best place to live in the United States. Along with Bolingbrook, Schaumburg has one of Illinois's two IKEA stores. It contains the Woodfield Mall, the 10th largest mall in the United States, which at most times has over 300 stores. Schaumburg's transition from a rural community to a suburban city began with Alfred Campanelli's first large-scale suburban-style development in 1959 and Woodfield Mall's opening on September 9, 1971. Schaumburg is bordered by Hoffman Estates and Palatine to the north, Inverness in northwest, Rolling Meadow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Level 257
Enterrium (formerly known as Level 257 then Pac-Man Entertainment) is a contemporary American restaurant and video arcade located at Woodfield Mall in Schaumburg, Illinois. The restaurant and entertainment destination was originally inspired by '' Pac-Man'' and the name refers to the famous kill screen, which occurs when the player reaches the 256th level of the original ''Pac-Man'' game, meaning "the next level of dining and entertainment". It was owned by Bandai Namco Entertainment from 2015 to 2021, which also owns all Pac-Man-related intellectual property. The restaurant celebrated its soft opening on March 2, 2015, and its grand opening in April 2015. In March 2021, the location was sold to National Entertainment Network and was rebranded as the Enterrium. Style It sits on 42,000 square feet which was previously used as a warehouse for a Sears department store. In addition, the restaurant also features sixteen boutique bowling lanes, table tennis and social sports, as well ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
257 Roberts
The .257 Roberts, also known as .257 Bob, is a medium-powered .25 caliber rifle cartridge. It has been described as the best compromise between the low recoil and flat trajectory of smaller calibers such as the 5 mm (.22") and 6 mm (.24"), and the higher energy but harder recoil of larger popular hunting calibers, such as the 7 mm (.28") family and the popular 7.62 mm (.30").The .257 Roberts (.257 Roberts +P) by Chuck Hawks (membership required) Nominal bullet diameter of the .257 Roberts is .257 inches. The .257 Roberts uses the same caliber bullets as or the more powerful |
List Of Country Calling Codes
Country calling codes or country dial-in codes are telephone number prefixes for reaching telephone subscribers in the networks of the member countries or regions of the International Telecommunication Union (ITU). The codes are defined by the ITU-T in standards E.123 and E.164. The prefixes enable international direct dialing (IDD) and are also referred to as ''international subscriber dialing'' (ISD) codes. Country codes are a component of the international telephone numbering plan and are necessary only when dialing a telephone number to establish a call to another country. Country codes are dialed before the national telephone number. By convention, international telephone numbers are represented by prefixing the country code with a plus sign (+), which also indicates to the subscriber that the local international call prefix must first be dialed. For example, the international call prefix in all countries of the North American Numbering Plan is 011, while it is 00 in mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burundi
Burundi (, ), officially the Republic of Burundi ( rn, Repuburika y’Uburundi ; Swahili: ''Jamuhuri ya Burundi''; French: ''République du Burundi'' ), is a landlocked country in the Great Rift Valley at the junction between the African Great Lakes region and East Africa. It is bordered by Rwanda to the north, Tanzania to the east and southeast, and the Democratic Republic of the Congo to the west; Lake Tanganyika lies along its southwestern border. The capital cities are Gitega and Bujumbura, the latter being the country's largest city. The Twa, Hutu and Tutsi peoples have lived in Burundi for at least 500 years. For more than 200 of those years, Burundi was an independent kingdom, until the beginning of the 20th century, when it became a German colony. After the First World War and Germany's defeat, the League of Nations "mandated" the territory to Belgium. After the Second World War, this transformed into a United Nations Trust Territory. Both Germans and Belgians rul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
257 BC
__NOTOC__ Year 257 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Regulus and Blasio (or, less frequently, year 497 '' Ab urbe condita''). The denomination 257 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Republic * The Romans attack Sardinia and try to capture it from the Carthaginians. * The Battle of Tyndaris is fought between the Roman fleet (with Gaius Atilius Regulus in command) and the Carthaginian fleet off Tyndaris (modern Tindari) in Sicily. Hiero II, tyrant of Syracuse, has allowed Tyndaris to be a base for the Carthaginians. However, after this battle, the town falls to Roman forces. China * The Qin siege of Handan, the capital of the State of Zhao: :* The State of Chu and the State of Wei send armies to assist Zhao against the Qin, and they defeat the Qin army of W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyhedral Graph
In geometric graph theory, a branch of mathematics, a polyhedral graph is the undirected graph formed from the vertices and edges of a convex polyhedron. Alternatively, in purely graph-theoretic terms, the polyhedral graphs are the 3-vertex-connected, planar graphs. Characterization The Schlegel diagram of a convex polyhedron represents its vertices and edges as points and line segments in the Euclidean plane, forming a subdivision of an outer convex polygon into smaller convex polygons (a convex drawing of the graph of the polyhedron). It has no crossings, so every polyhedral graph is also a planar graph. Additionally, by Balinski's theorem, it is a 3-vertex-connected graph. According to Steinitz's theorem, these two graph-theoretic properties are enough to completely characterize the polyhedral graphs: they are exactly the 3-vertex-connected planar graphs. That is, whenever a graph is both planar and 3-vertex-connected, there exists a polyhedron whose vertices and edges fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convex Polyhedron
A convex polytope is a special case of a polytope, having the additional property that it is also a convex set contained in the n-dimensional Euclidean space \mathbb^n. Most texts. use the term "polytope" for a bounded convex polytope, and the word "polyhedron" for the more general, possibly unbounded object. Others''Mathematical Programming'', by Melvyn W. Jeter (1986) p. 68/ref> (including this article) allow polytopes to be unbounded. The terms "bounded/unbounded convex polytope" will be used below whenever the boundedness is critical to the discussed issue. Yet other texts identify a convex polytope with its boundary. Convex polytopes play an important role both in various branches of mathematics and in applied areas, most notably in linear programming. In the influential textbooks of Grünbaum and Ziegler on the subject, as well as in many other texts in discrete geometry, convex polytopes are often simply called "polytopes". Grünbaum points out that this is solely to avoi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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