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Category Of Simplicial Sets
Category, plural categories, may refer to: General uses *Classification, the general act of allocating things to classes/categories Philosophy *Category of being * ''Categories'' (Aristotle) *Category (Kant) *Categories (Peirce) *Category (Vaisheshika) * Stoic categories *Category mistake Science *Cognitive categorization, categories in cognitive science *Statistical classification, statistical methods used to effect classification/categorization Mathematics * Category (mathematics), a structure consisting of objects and arrows * Category (topology), in the context of Baire spaces * Lusternik–Schnirelmann category, sometimes called ''LS-category'' or simply ''category'' * Categorical data, in statistics Linguistics *Lexical category, a part of speech such as ''noun'', ''preposition'', etc. *Syntactic category, a similar concept which can also include phrasal categories *Grammatical category, a grammatical feature such as ''tense'', ''gender'', etc. Other * Category (chess ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classification
Classification is the activity of assigning objects to some pre-existing classes or categories. This is distinct from the task of establishing the classes themselves (for example through cluster analysis). Examples include diagnostic tests, identifying spam emails and deciding whether to give someone a driving license. As well as 'category', synonyms or near-synonyms for 'class' include 'type', 'species', 'order', 'concept', 'taxon', 'group', 'identification' and 'division'. The meaning of the word 'classification' (and its synonyms) may take on one of several related meanings. It may encompass both classification and the creation of classes, as for example in 'the task of categorizing pages in Wikipedia'; this overall activity is listed under taxonomy. It may refer exclusively to the underlying scheme of classes (which otherwise may be called a taxonomy). Or it may refer to the label given to an object by the classifier. Classification is a part of many different kinds of activ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category (chess Tournament)
A chess tournament is a series of chess games played competitively to determine a winning individual or team. Since the first international chess tournament in London 1851 chess tournament, London, 1851, chess tournaments have become the standard form of chess competition among multiple serious players. Today, the most recognized chess tournaments for individual competition include the Candidates Tournament and the Tata Steel Chess Tournament. The largest team chess tournament is the Chess Olympiad, in which players compete for their country's team in the same fashion as the Olympic Games. Since the 1960s, Computer chess, chess computers have occasionally entered human tournaments, but this is no longer common, because computers would defeat humans and win the tournament. Most chess tournaments are organized and directed according to the World Chess Federation (FIDE) handbook, which offers guidelines and regulations for conducting tournaments. Chess tournaments are mainly held in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category 5 Cable
Category 5 cable (Cat 5) is a twisted pair cable for computer networks. Since 2001, the variant commonly in use is the Category 5e specification (Cat 5e). The cable standard provides performance of up to 100 MHz and is suitable for most varieties of Ethernet over twisted pair up to 2.5GBASE-T but more commonly runs at (Gigabit Ethernet) speeds. Cat 5 is also used to carry other signals such as telephone and video. This cable is commonly connected using punch-down blocks and modular connectors. Most Category 5 cables are Electromagnetic shielding, unshielded, relying on the balanced line twisted pair design and differential signaling for noise suppression. Standards Category 5 is currently defined in ISO/IEC 11801, IEC 61156 and EN 50173, though it was originally defined in ANSI/TIA/EIA-568-A (with clarification in TSB-95). These documents specify performance characteristics and test requirements for frequencies up to 100 MHz. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category 4 Cable
Category 4 cable (Cat 4) is a cable that consists of eight copper wires arranged in four unshielded twisted pairs (UTP) supporting signals up to 20 MHz. It is used in telephone networks which can transmit voice and data up to . For a brief period it was used for some Token Ring, 10BASE-T, and 100BASE-T4 networks, but was quickly superseded by Category 5 cable Category 5 cable (Cat 5) is a twisted pair cable for computer networks. Since 2001, the variant commonly in use is the Category 5e specification (Cat 5e). The cable standard provides performance of up to 100 MHz and is .... It is no longer common or used in new installations and is not recognized by the current version of the ANSI/TIA-568 data cabling standards. References {{UTP Cable Standards Ethernet cables ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category 3 Cable
Category 3 cable, commonly known as or station wire, and less commonly known as VG or voice-grade (as, for example, in 100BaseVG), is an unshielded twisted pair (UTP) cable used in telephone wiring. It is part of a family of standards defined jointly by the Electronic Industries Alliance (EIA) and the Telecommunications Industry Association (TIA) and published in TIA/EIA-568-B. Although designed to reliably carry data up to , modern data networks run at much higher speeds, and or better cable is generally used for new installations. Cat 3 cables may have 2, 3, 4, or more pairs. Networking was widely used in computer networking in the early 1990s for 10BASE-T Ethernet and, to a much lesser extent, for 100BaseVG Ethernet, Token Ring and 100BASE-T4. The original Power over Ethernet 802.3af specification supports the use of cable, but the later 802.3at Type 2 high-power variation does not.IEEE 802.3at-2009, clause 33.1.1c In some use cases and for short distances, Cat 3 may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category 2 Cable
Category 2 cable, also known as Cat 2, is a grade of unshielded twisted pair cabling designed for telephone and data communications. The maximum frequency suitable for transmission over Cat 2 cable is 4 MHz, and the maximum bandwidth (computing), bandwidth is 4 Mbit/s. Cat 2 cable contains 4 pairs of wires, or 8 wires total. Official TIA/EIA-568 standards have only been established for cables of Category 3 ratings or above. Though not an official category standard established by TIA/EIA, Category 2 has become the de facto name given to Level 2 cables originally defined by Anixter International, the distributor. Anixter ''Level 2'' cable was frequently used on ARCnet and 4 Mbit/s Token Ring networks, it is also used in telephone networks but it is no longer commonly used. References {{UTP Cable Standards Networking hardware Signal cables ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Category 1 Cable
Category 1 cable, also known as Cat 1, Level 1, or voice-grade copper, is a grade of unshielded twisted pair cabling designed for telephone A telephone, colloquially referred to as a phone, is a telecommunications device that enables two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most ... communications, and at one time was the most common on-premises wiring. The maximum frequency suitable for transmission over Cat 1 cable is 1 MHz, but Cat 1 is not currently considered adequate for data transmission (though it was at one time used for that purpose on the Apple Macintosh starting in the late 1980s in the form of Farallon Computing's//NetTopia's PhoneNet, an implementation of Apple's LocalTalk networking hardware standard). Although not an official category standard established by TIA/EIA, Category 1 has become the de facto name given to Le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Categories Of New Testament Manuscripts
New Testament manuscripts in Greek can be categorized into five theoretical groups, according to a schema introduced in 1981 by Kurt and Barbara Aland in ''The Text of the New Testament''. The categories are based on how each manuscript relates to the various theorized text-types. Generally speaking, earlier Alexandrian manuscripts are category I, while later Byzantine manuscripts are category V. Aland's method involved considering 1000 passages where the Byzantine text differs from non-Byzantine text. The Alands did not select their 1000 readings from all of the NT books; for example, none were drawn from Matthew and Luke. Description of categories The Alands' categories do not simply correspond to the text-types; all they do is demonstrate the 'Byzantine-ness' of a particular text; that is, how much it is similar to the Byzantine text-type, from least (Category I) to most similar (Category V). Category V can be equated with the Byzantine text-type, but the other categori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Categories (word Game)
Categories is a word game where players attempt to list words that fit into particular categories, all starting with the same letter. Players start by deciding on a list of categories between them, such as "town" or "actor", and each writing that list on a sheet of paper. A letter of the alphabet is then chosen at random, and players have a set amount of time to write something for each category that starts with that letter. When the time is up, players swap sheets and score one another's attempts. An entry unique among the group is worth 2 points, whereas an entry shared with another player scores 1 point. The player with the highest total is the winner. For subsequent rounds, a different letter is chosen. U.S. president John F. Kennedy is said to have been a fan of the game, one biography describing his family as playing it "endlessly". Guggenheim In the variant known as "Guggenheim", players write a list of categories down one edge of the paper, and five columns across it, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Software Categories
Software categories are groups of software. They allow software to be understood in terms of those categories, instead of the particularities of each package. Different classification schemes consider different aspects of software. Categorization approaches Computer software can be put into categories based on common function, type, or field of use. There are three broad classifications: * ''Application software'' is the general designation of computer programs for performing tasks. Application software may be general-purpose ( word processing, web browsers, etc.) or have a specific purpose (accounting, truck scheduling, etc.). Application software contrasts with system software. * '' System software'' is a generic term referring to the computer programs used to start and run computer systems including diverse application software and networks. * '' Computer programming tools'', such as compilers and linkers, are used to translate and combine computer program source code and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weight Class (boxing)
In boxing, a weight class is a measurement Human weight, weight range for boxers. The lower limit of a weight class is equal to the upper weight limit of the class below it. The top class, with no upper limit, is called heavyweight in professional boxing and super heavyweightAIBA, ''Technical & Competition Rules'', §1.2 & Appendix K in amateur boxing. A boxing match is usually scheduled for a fixed weight class, and each boxer's weight must not exceed the upper limit. Although professional boxers may fight above their weight class, an amateur boxer's weight must not fall below the lower limit. A nonstandard weight limit is called a catchweight. Weigh-in A boxer who is over the weight limit may strip naked to make the weight if the excess is minimal; otherwise, in a professional bout, one can try again later, typically after losing weight in the interim through dehydration by vigorous exercise in a steam room. If the excess weight is too great, the effort expended trying to " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
