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The main objective of interval arithmetic is to provide a simple way of calculating upper and lower bounds of a function's range in one or more variables. These endpoints are not necessarily the true supremum or infimum of a range since the precise calculation of those values can be difficult or impossible; the bounds only need to contain the function's range as a subset.
The text is known for some of the earliest known discussions of fractions and trigonometric functions. [1] [2] [13] The Surya Siddhanta is one of several astronomy-related Hindu texts. It represents a functional system that made reasonably accurate predictions.
An aircraft is said to have positive stagger, or simply stagger, when the upper wing is positioned forward of the lower (bottom) wing, [2] Examples include the de Havilland Tiger Moth or Stearman. Conversely, an aeroplane is said to have negative stagger in unusual cases where the upper wing is positioned behind the lower wing, as in the ...
Heart failure with mildly reduced ejection fraction (HFmrEF), previously called "heart failure with mid-range ejection fraction", [63] is defined by an ejection fraction of 41–49%. [ 63 ] Heart failure with preserved ejection fraction (HFpEF): Synonyms no longer recommended include "diastolic heart failure" and "heart failure with normal ...
Empire size in this list is defined as the dry land area it controlled at the time, which may differ considerably from the area it claimed. For example: in the year 1800, European powers collectively claimed approximately 20% of the Earth's land surface that they did not effectively control. [8]
Map of countries by Gross fixed capital formation (% of GDP), 2023, according to World Bank. This is the list of countries by gross fixed capital formation (GFCP), formerly known as gross fixed investment.
United States trade deficits from 1997 to 2021. Deficits are over 50 billion dollars as of 2021 with the countries shown. Data from the US Census Bureau.. The balance of trade of the United States moved into substantial deficit from the late 1990s, especially with China and other Asian countries.
Natural gas burning on a gas stove Burning of natural gas coming out of the ground. Natural gas (also called fossil gas, methane gas, or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane (95%) [1] in addition to various smaller amounts of other higher alkanes.