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  2. National Council of Educational Research and Training

    en.wikipedia.org/wiki/National_Council_of...

    Those who wish to adopt the textbooks are required to send a request to NCERT, upon which soft copies of the books are received. The material is press-ready and may be printed by paying a 5% royalty, and by acknowledging NCERT. [11] The textbooks are in color-print and are among the least expensive books in Indian book stores. [11]

  3. Exemplar - Wikipedia

    en.wikipedia.org/wiki/Exemplar

    Exemplar, a well-known science problem and its solution, from Thomas Kuhn's The Structure of Scientific Revolutions; Exemplar, the first name for the ship USS Dorothea L. Dix; Exemplar, in exemplification theory, an illustrative representation of information or an event

  4. NCERT textbook controversies - Wikipedia

    en.wikipedia.org/wiki/NCERT_textbook_controversies

    The poem Sabse Khatarnak by the Hindi poet Pash was included in the NCERT textbook for 11th standard Hindi students in 2006. In 2017, the BJP government affiliated RSS tried to remove it but failed. [25] [26] The NCERT made two controversial changes to the class XII political science textbook ‘Politics in India Since Independence’ in 2017.

  5. Exemplar (textual criticism) - Wikipedia

    en.wikipedia.org/wiki/Exemplar_(textual_criticism)

    In textual criticism, an exemplar is the text used to produce another text. In the study of the history of a text an especially important exemplar is that which precedes any split in the tradition of that text, that is, before significant textual variations occur in different versions: such an exemplar is called an archetype .

  6. Extraneous and missing solutions - Wikipedia

    en.wikipedia.org/wiki/Extraneous_and_missing...

    Therefore, the solution = is extraneous and not valid, and the original equation has no solution. For this specific example, it could be recognized that (for the value x = − 2 {\displaystyle x=-2} ), the operation of multiplying by ( x − 2 ) ( x + 2 ) {\displaystyle (x-2)(x+2)} would be a multiplication by zero.

  7. Paradigm shift - Wikipedia

    en.wikipedia.org/wiki/Paradigm_shift

    A paradigm shift is a fundamental change in the basic concepts and experimental practices of a scientific discipline.It is a concept in the philosophy of science that was introduced and brought into the common lexicon by the American physicist and philosopher Thomas Kuhn.

  8. AC-3 algorithm - Wikipedia

    en.wikipedia.org/wiki/AC-3_algorithm

    In constraint satisfaction, the AC-3 algorithm (short for Arc Consistency Algorithm #3) is one of a series of algorithms used for the solution of constraint satisfaction problems (or CSPs). It was developed by Alan Mackworth in 1977. The earlier AC algorithms are often considered too inefficient, and many of the later ones are difficult to ...

  9. Specimens of Archaeopteryx - Wikipedia

    en.wikipedia.org/wiki/Specimens_of_Archaeopteryx

    The single feather. The initial discovery, a single feather, was unearthed in 1860 or 1861 and described in 1861 by Christian Erich Hermann von Meyer.The fossil consists of two counterslabs, designated BSP 1869 VIII 1 (main slab) and MB.Av.100 (counterslab), which are currently located at the Bavarian State Collection of Paleontology and Geology of Munich University and the Natural History ...