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1 dzień temu · In mathematics, a field is a set on which addition, subtraction, multiplication, and division are defined and behave as the corresponding operations on rational and real numbers.A field is thus a fundamental algebraic structure which is widely used in algebra, number theory, and many other areas of mathematics.. The best known fields are the field of rational numbers, the field of real numbers ...
23 godz. temu · The Sun is the star at the center of the Solar System.It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies. It is by far the most important source of energy for life on Earth. ...
