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  2. Round function - Wikipedia

    en.wikipedia.org/wiki/Round_function

    In topology and in calculus, a round function is a scalar function, over a manifold, whose critical points form one or several connected components, each homeomorphic to the circle, also called critical loops. They are special cases of Morse-Bott functions.

  3. Rounding - Wikipedia

    en.wikipedia.org/wiki/Rounding

    If x is negative, round-down is the same as round-away-from-zero, and round-up is the same as round-toward-zero. In any case, if x is an integer, y is just x . Where many calculations are done in sequence, the choice of rounding method can have a very significant effect on the result.

  4. List of towns and boroughs in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_towns_and_boroughs...

    This is a list of towns and boroughs in Pennsylvania. There are currently 956 municipalities classified as boroughs and one classified as a town in Pennsylvania . Unlike other forms of municipalities in Pennsylvania, boroughs and towns are not classified according to population.

  5. List of cities in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_cities_in_Pennsylvania

    Map of the United States with Pennsylvania highlighted. There are 56 municipalities classified as cities in the U.S. state of Pennsylvania. [1] Each city is further classified based on population, with Philadelphia being of the first class, Pittsburgh of the second class, Scranton of the second class A, and the remaining 53 cities being of the third class.

  6. List of places in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_places_in_Pennsylvania

    This list of current cities, boroughs, townships, unincorporated communities, counties, and other recognized places in the U.S. state of Pennsylvania also includes information on the number and names of counties in which the place lies, and its lower and upper zip code bounds, if applicable.

  7. Pennsylvania statistical areas - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_statistical_areas

    The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico. [2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

  8. Significant figures - Wikipedia

    en.wikipedia.org/wiki/Significant_figures

    Thus, in the case of 1.0, there are two significant figures, whereas 1 (without a decimal) has one significant figure. Among a number's significant digits, the most significant digit is the one with the greatest exponent value (the leftmost significant digit/figure), while the least significant digit is the one with the lowest exponent value ...

  9. List of census-designated places in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_census-designated...

    Cairnbrook - Somerset County; Caln - Chester County; Calumet - Westmoreland County; Campbelltown - Lebanon County; Canadohta Lake - Crawford County; Carlisle Barracks - Cumberland County