最終更新日：2023/08/19

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A commodity; see realty. / (grammar) One of the three genders that the common gender can be separated into in the Scandinavian languages. / (mathematics) A real number. / (obsolete) A realist.

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real

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real

/ˈɹiːəl/

noun

A commodity; see realty. / (grammar) One of the three genders that the common gender can be separated into in the Scandinavian languages. / (mathematics) A real number. / (obsolete) A realist.

I bought a real diamond necklace.

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意味（1）

A commodity; see realty.

意味（2）

(grammar) One of the three genders that the common gender can be separated into in the Scandinavian languages.

意味（3）

(mathematics) A real number.

There have been several classical constructions of the reals that avoid these problems, the most famous ones being Dedekind Cuts and Cauchy Sequences, named respectively for the mathematicians Richard Dedekind (1831 - 1916) and Augustine Cauchy (1789 - 1857). We will not discuss these constructions here, but will use a more modern one developed by Gabriel Stolzenberg, based on "interval arithmetic."

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