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  2. Postal Index Number - Wikipedia

    en.wikipedia.org/wiki/Postal_Index_Number

    The PIN system was introduced on 15 August 1972 by Shriram Bhikaji Velankar, an additional secretary in the Government of India's Ministry of Communications. [1] [2] [3] The system was introduced to simplify the manual sorting and delivery of mail by eliminating confusion over incorrect addresses, similar place names, and different languages used by the public.

  3. List of state and union territory capitals in India - Wikipedia

    en.wikipedia.org/wiki/List_of_state_and_union...

    India is a federal constitutional republic governed under a parliamentary system consisting of 28 states and 8 union territories. [ 1] All states, as well as the union territories of Jammu and Kashmir, Puducherry and the National Capital Territory of Delhi, have elected legislatures and governments, both patterned on the Westminster model.

  4. Mahalanobis distance - Wikipedia

    en.wikipedia.org/wiki/Mahalanobis_distance

    The Mahalanobis distance is a measure of the distance between a point and a distribution , introduced by P. C. Mahalanobis in 1936. [ 1] The mathematical details of Mahalanobis distance has appeared in the Journal of The Asiatic Society of Bengal. [ 2] Mahalanobis's definition was prompted by the problem of identifying the similarities of ...

  5. List of constituencies of the Lok Sabha - Wikipedia

    en.wikipedia.org/wiki/List_of_constituencies_of...

    The Lok Sabha is the lower house of the Parliament of India, and its members are elected by the voters of different constituencies across the country. This webpage provides a comprehensive list of the constituencies of the Lok Sabha, along with their state, district, and reservation status. You can also find links to the lists of constituencies of other legislative assemblies in India, such as ...

  6. Category:Indian pincodes - Wikipedia

    en.wikipedia.org/wiki/Category:Indian_pincodes

    P. Postal Index Number. Categories: Postal system of India. Postal codes by country.

  7. Piston motion equations - Wikipedia

    en.wikipedia.org/wiki/Piston_motion_equations

    The reciprocating motion of a non-offset piston connected to a rotating crank through a connecting rod (as would be found in internal combustion engines) can be expressed by equations of motion. This article shows how these equations of motion can be derived using calculus as functions of angle ( angle domain) and of time ( time domain) .

  8. Distance from a point to a line - Wikipedia

    en.wikipedia.org/wiki/Distance_from_a_point_to_a...

    The distance (or perpendicular distance) from a point to a line is the shortest distance from a fixed point to any point on a fixed infinite line in Euclidean geometry. It is the length of the line segment which joins the point to the line and is perpendicular to the line. The formula for calculating it can be derived and expressed in several ways.

  9. Personal identification number - Wikipedia

    en.wikipedia.org/wiki/Personal_identification_number

    For PIN code in Indian addresses, see Postal Index Number. A personal identification number ( PIN ), PIN code, or sometimes redundantly a PIN number, is a numeric (sometimes alpha-numeric) passcode used in the process of authenticating a user accessing a system. The PIN has been the key to facilitating the private data exchange between ...