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Frank Pfenning
Frank Pfenning is a German-American professor of computer science, adjunct professor in the department of philosophy, and head of the Computer Science Department at Carnegie Mellon University. Education and career Pfenning grew up in Rüsselsheim in Germany. He studied mathematics and computer science at Technische Universität Darmstadt in Germany. He then moved to the US and studied at Carnegie Mellon University, where he received his M.S. and Ph.D. in the Department of Mathematics in 1987, for his dissertation entitled ''Proof Transformations in Higher-Order Logic''. He was a student of Peter B. Andrews. His research includes work in the area of programming languages, logic and type theory, logical frameworks, automated deduction, and trustworthy computing. He is one of the principal authors of the Twelf system. He also developed Carnegie Mellon's introductory imperative programming course for undergraduates and the C0 programming language used in this course. Honors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rüsselsheim Am Main
Rüsselsheim am Main is the largest city in the Groß-Gerau district in the Rhein-Main region of Germany. It is one of seven special status cities (implementing several functions that counties normally provide) in Hessen and is located on the Main, between Frankfurt and Mainz, only a few kilometres from its mouth in Mainz. The suburbs of Bauschheim and Königstädten are included in Rüsselsheim. Rüsselsheim has attained international recognition through the presence of the German car company Opel. History Rüsselsheim's foundation goes back to a Frankish colony in the first half of the 5th century. The first written mention of "Rucilesheim", or "the house of Rucile", is in an inventory of royal hunting rights around the year 840. Rüsselsheim emerged from a settlement of the Count of Katzenelnbogen. Over time, the name of the city evolved from Rucilesheim to the current Rüsselsheim: *764/5 Rucile(n)sheim *before 1130 Ruozcelenesheim *1336 Ruzelnsheim *1275 Ruozelsheim *16 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twelf
Twelf is an implementation of the logical framework LF developed by Frank Pfenning and Carsten Schürmann at Carnegie Mellon University. It is used for logic programming and for the formalization of programming language theory. Introduction At its simplest, a Twelf program (called a "signature") is a collection of declarations of type families (relations) and constants that inhabit those type families. For example, the following is the standard definition of the natural numbers, with standing for zero and the successor operator. nat : type. z : nat. s : nat -> nat. Here is a type, and and are constant terms. As a dependently typed system, types can be indexed by terms, which allows the definition of more interesting type families. Here is a definition of addition: plus : nat -> nat -> nat -> type. plus_zero : plus M z M. plus_succ : plus M (s N) (s P) <- plus M N P. The type family is read as a relation between three na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Computer Scientists
German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Germanic peoples (Roman times) * German language **any of the Germanic languages * German cuisine, traditional foods of Germany People * German (given name) * German (surname) * Germán, a Spanish name Places * German (parish), Isle of Man * German, Albania, or Gërmej * German, Bulgaria * German, Iran * German, North Macedonia * German, New York, U.S. * Agios Germanos, Greece Other uses * German (mythology), a South Slavic mythological being * Germans (band), a Canadian rock band * German (song), "German" (song), a 2019 song by No Money Enterprise * ''The German'', a 2008 short film * "The Germans", an episode of ''Fawlty Towers'' * ''The German'', a nickname for Congolese rebel André Kisase Ngandu See also * Germanic (disambi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People From Rüsselsheim
A person ( : people) is a being that has certain capacities or attributes such as reason, morality, consciousness or self-consciousness, and being a part of a culturally established form of social relations such as kinship, ownership of property, or legal responsibility. The defining features of personhood and, consequently, what makes a person count as a person, differ widely among cultures and contexts. In addition to the question of personhood, of what makes a being count as a person to begin with, there are further questions about personal identity and self: both about what makes any particular person that particular person instead of another, and about what makes a person at one time the same person as they were or will be at another time despite any intervening changes. The plural form "people" is often used to refer to an entire nation or ethnic group (as in "a people"), and this was the original meaning of the word; it subsequently acquired its use as a plural form of pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnegie Mellon University Faculty
Carnegie may refer to: People *Carnegie (surname), including a list of people with the name *Clan Carnegie, a lowland Scottish clan Institutions Named for Andrew Carnegie * Carnegie Building (Troy, New York), on the campus of Rensselaer Polytechnic Institute *Carnegie College, in Dunfermline, Scotland, a former further education college * Carnegie Community Centre, in downtown Vancouver, British Columbia * Carnegie Council for Ethics in International Affairs *Carnegie Endowment for International Peace, a global think tank with headquarters in Washington, DC, and four other centers, including: ** Carnegie Middle East Center, in Beirut ** Carnegie Europe, in Brussels ** Carnegie Moscow Center *Carnegie Foundation (other), any of several foundations *Carnegie Hall, a concert hall in New York City *Carnegie Hall, Inc., a regional cultural center in Lewisburg, West Virginia * Carnegie Hero Fund * Carnegie Institution for Science, also called Carnegie Institution of Washingto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Year Of Birth Missing (living People)
A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked. A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar. The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars. For the Gregorian calendar, the average length of the calenda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Programming Language Researchers
Program, programme, programmer, or programming may refer to: Business and management * Program management, the process of managing several related projects * Time management * Program, a part of planning Arts and entertainment Audio * Programming (music), generating music electronically * Radio programming, act of scheduling content for radio * Synthesizer programmer, a person who develops the instrumentation for a piece of music Video or television * Broadcast programming, scheduling content for television * Program music, a type of art music that attempts to render musically an extra-musical narrative * Synthesizer patch or program, a synthesizer setting stored in memory * "Program", an instrumental song by Linkin Park from '' LP Underground Eleven'' * Programmer, a film on the lower half of a double feature bill; see B-movie Science and technology * Computer program, a set of instructions that describes how to perform a specific task to a computer. * Computer programming, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnegie Mellon University Alumni
Carnegie may refer to: People * Carnegie (surname), including a list of people with the name * Clan Carnegie, a lowland Scottish clan Institutions Named for Andrew Carnegie *Carnegie Building (Troy, New York), on the campus of Rensselaer Polytechnic Institute * Carnegie College, in Dunfermline, Scotland, a former further education college * Carnegie Community Centre, in downtown Vancouver, British Columbia *Carnegie Council for Ethics in International Affairs * Carnegie Endowment for International Peace, a global think tank with headquarters in Washington, DC, and four other centers, including: **Carnegie Middle East Center, in Beirut **Carnegie Europe, in Brussels **Carnegie Moscow Center * Carnegie Foundation (other), any of several foundations * Carnegie Hall, a concert hall in New York City * Carnegie Hall, Inc., a regional cultural center in Lewisburg, West Virginia *Carnegie Hero Fund *Carnegie Institution for Science, also called Carnegie Institution of Washingto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sharon Needles
Sharon Needles (born November 28, 1981) is the stage name of Aaron R. Coady, an American drag performer and recording artist. A self-described "stupid genius, reviled sweetheart, and PBR princess", Needles rose to international attention on the fourth season of the Logo reality competition series '' RuPaul's Drag Race'', where she quickly became a fan favorite and was subsequently crowned "America's Next Drag Superstar" in April 2012. After winning ''Drag Race'', Needles released her debut album '' PG-13'' in January 2013. It debuted at number 186 on the ''Billboard'' 200 and number nine on Dance/Electronic Albums. Later, Needles released the US Dance/Electronic chart top-ten albums ''Taxidermy'' (2015), ''Battle Axe'' (2017), ''Spoopy'' (2019), and ''Absolute Zero'' (2022). In the late 2010s and early 2020s, Needles was subject to marked criticism in response to allegations of racially insensitive behavior and sexual misconduct. Nevertheless, she remains active and her off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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