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安裝中文字典英文字典辭典工具!
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- Is the inverse of a symmetric matrix also symmetric?
All the proofs here use algebraic manipulations But I think it may be more illuminating to think of a symmetric matrix as representing an operator consisting of a rotation, an anisotropic scaling and a rotation back
- abstract algebra - $x$ conjugate to $y$ in a group $G$ is an . . .
This is a question from the free Harvard online abstract algebra lectures I'm posting my solutions here to get some feedback on them For a fuller explanation, see this post This problem is from
- What is conjugate in group theory? - Mathematics Stack Exchange
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- Does $\\pi$ contain all possible number combinations?
It is not true that an infinite, non-repeating decimal must contain ‘every possible number combination’ The decimal $0 011000111100000111111\dots$ is an easy counterex
- Whats special properties does the number 1372 have?
I've just watched a Simpsons episode called "Burns Verkaufen der Kraftwerk" (S3E11) In that episode, when the German investors talk with Homer Simpson, they said they were from "The Land of Chocolate" Homer than imagines a land full of chocolate In the beginning of the cut-away gag, there is a sign writing "Land of Chocolate Pop 1372"
- Difference between centralizer and center groups?
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- Why is a Sylow $p$-subgroup normal iff theres only one of them?
Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
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