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Word problem (mathematics) In computational mathematics, a word problem is the problem of deciding whether two given expressions are equivalent with respect to a set of rewriting identities. A prototypical example is the word problem for groups, but there are many other instances as well. A deep result of computational theory is that answering ...
History of propaganda. Propaganda is a form of communication that aims to shape people's beliefs, actions and behaviours. It is generally not impartial, and is hence viewed as a means of persuasion. It is often biased, misleading, or even false to promote a specific agenda or perspective. Propagandists use various techniques to manipulate ...
Antisemitic propaganda was a common theme in Nazi propaganda. However, it was occasionally reduced for tactical reasons, such as for the 1936 Olympic Games. It was a recurring topic in Hitler's book Mein Kampf (1925–26), which was a key component of Nazi ideology.
Word problem (mathematics education) In science education, a word problem is a mathematical exercise (such as in a textbook, worksheet, or exam) where significant background information on the problem is presented in ordinary language rather than in mathematical notation. As most word problems involve a narrative of some sort, they are ...
Word problem for groups. In mathematics, especially in the area of abstract algebra known as combinatorial group theory, the word problem for a finitely generated group is the algorithmic problem of deciding whether two words in the generators represent the same element of . The word problem is a well-known example of an undecidable problem.
The Hardest Logic Puzzle Ever is a logic puzzle so called by American philosopher and logician George Boolos and published in The Harvard Review of Philosophy in 1996. [1][2] Boolos' article includes multiple ways of solving the problem. A translation in Italian was published earlier in the newspaper La Repubblica, under the title L'indovinello ...
In English, most of the interrogative words begin with the same letters, wh-; in Latin, most also begin with the same letters, qu-. This is not a coincidence, as they are cognates derived from the Proto-Indo-European interrogative pronoun root k w o-, reflected in Proto-Germanic as χ w a-or kh w a-and in Latin as qu-. [citation needed]
Stemming. In linguistic morphology and information retrieval, stemming is the process of reducing inflected (or sometimes derived) words to their word stem, base or root form—generally a written word form. The stem need not be identical to the morphological root of the word; it is usually sufficient that related words map to the same stem ...