The Inverse-Function Theorem

The Inverse-Function Theorem
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反函数定理

DOI:
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发表时间:
1984
期刊:
影响因子:
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通讯作者:
G. Baley Price
G. Baley Price
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文献类型:
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作者:
G. Baley Price

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定义域为A且值域为B的函数f是一个在A x B中的有序对(x,y)的集合{(x,y):x∈A,y∈B},它满足以下条件[见附录2第96节]:如果(x,y)和(x,y)在f中,则n = y。我们说f将A映射到B,记为f:A → B。如果(x,y)在f中,我们说y是f在x处的值,写y = f(x)。则f是集合{(x,f(x)):x∈A},B={f(x):x∈A}.
A function f with domain A and range B is a set {(x,y):x∈A,y∈B} of ordered pairs (x,y) in A x B which satisfies the following condition [see Section 96 in Appendix 2]: if (x,y) and (x,ý are in f then ý = y. We say f maps A into B and write f:A → B. If (x,y) is in f, we say y is the value of f at x and write y = f(x). Thenf is the set {(x,f(x)):x∈A}, and B={f(x):x∈A}.