Abstract
As usual, a collection of objects will be called a set. A member of the collection is also called an element of the set. It is useful in practice to use short symbols to denote certain sets. For instance, we denote by R the set of all real numbers, and by C the set of all complex numbers. To say that “x is a real number” or that “x is an element of R” amounts to the same thing. The set of all n-tuples of real numbers will be denoted by R n. Thus “X is an element of R n” and “x is an n-tuple of real numbers” mean the same thing. A review of the definition of C and its properties is given an Appendix.
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© 1987 Springer Science+Business Media New York
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Lang, S. (1987). Vector Spaces. In: Linear Algebra. Undergraduate Texts in Mathematics. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-1949-9_1
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DOI: https://doi.org/10.1007/978-1-4757-1949-9_1
Publisher Name: Springer, New York, NY
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