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Pushdown automaton. In the theory of computation, a branch of theoretical computer science, a pushdown automaton (PDA) is a type of automaton that employs a stack. Pushdown automata are used in theories about what can be computed by machines. They are more capable than finite-state machines but less capable than Turing machines (see below).
The first ten amendments were adopted and ratified simultaneously and are known collectively as the Bill of Rights. The 13th, 14th, and 15th amendments are collectively known as the Reconstruction Amendments. Six amendments adopted by Congress and sent to the states have not been ratified by the required number of states.
Dick Cheney, 46th Vice President of the United States (2001–2009), United States Secretary of Defense (1989–1993), House Minority Whip (1989), Chair of the House Republican Conference (1987–1989), U.S. Representative from Wyoming (1979–1989), White House Chief of Staff (1975–1977), White House Deputy Chief of Staff (1974–1975) (Republican) [7] [8]
Calamity Jane. Martha Jane Canary (May 1, 1852 – August 1, 1903), better known as Calamity Jane, was an American frontierswoman, sharpshooter, and storyteller. [2][3][4] In addition to many exploits, she was known for being an acquaintance of Wild Bill Hickok.
This is a list of Hypertext Transfer Protocol (HTTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. It includes codes from IETF Request for Comments (RFCs), other specifications, and some additional codes used in some common applications of the HTTP. The first digit of the status ...
This chronological list of school shootings in the United States since the year 2000 includes school shootings in the United States that occurred at K–12 public and private schools, as well as at colleges and universities, and on school buses. Excluded from this list are the following:
This is an accepted version of this page This is the latest accepted revision, reviewed on 14 September 2024. The following is a list of mental disorders as defined at any point by the Diagnostic and Statistical Manual of Mental Disorders (DSM) or the International Classification of Diseases (ICD). A mental disorder, also known as a mental illness, mental health condition, or psychiatric ...
This list comprises the world's largest companies by consolidated revenue, according to the Fortune Global 500 2024 rankings and other sources. [2] American retail corporation Walmart has been the world's largest company by revenue since 2014. [1] The list is limited to the largest 50 companies, all of which have annual revenues exceeding US ...