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F*****n
发帖数: 1552
1
数学上的倒数是不是inverse?
矩阵的逆好像也是inverse?
s**s
发帖数: 404
2
其实一个数就是单元矩阵,它的倒数就是它的逆,相乘得1。这样不矛盾了吧。

【在 F*****n 的大作中提到】
: 数学上的倒数是不是inverse?
: 矩阵的逆好像也是inverse?

F*****n
发帖数: 1552
3
它们都叫inverse?

【在 s**s 的大作中提到】
: 其实一个数就是单元矩阵,它的倒数就是它的逆,相乘得1。这样不矛盾了吧。
s**s
发帖数: 404
4
Please refer to wikipedia:
http://en.wikipedia.org/wiki/Inverse_element
"Every real number s has a additive inverse given by -x. Every nonzero real
number x has a multiplicative inverse give by 1/x. By contrast, zero has no
multiplicative inverse."
"A square matrix M with entries in a field K is invertible if and only if
its determinant is different from zero. If the determinant of M is zero, it
is impossible for it to have a one-sided inverse; therefore a eft inverse or
right inverse implies th

【在 F*****n 的大作中提到】
: 它们都叫inverse?
l***g
发帖数: 1035
5
reciprocal something

【在 F*****n 的大作中提到】
: 数学上的倒数是不是inverse?
: 矩阵的逆好像也是inverse?

s**s
发帖数: 404
6
reciprocal
http://en.wikipedia.org/wiki/Reciprocal_%28mathematics%29

【在 l***g 的大作中提到】
: reciprocal something
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