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 Sep 1 comment editing signal in frequency domain and converting back to time domain You might want to post this at StackOverflow as well, for more answers (or even avp.stackexchange.com under signal-processing). Sep 1 revised Is $\sin(x)/ \tan(x) = \cos(x)$ at $0$? Added LaTeX. Sep 1 suggested approved edit on Is $\sin(x)/ \tan(x) = \cos(x)$ at $0$? Sep 1 awarded Quorum Aug 31 awarded Commentator Aug 31 comment Meaning of, and how to verify, a vector space *over* $\mathbb{R}$ +1 Thank you for the detailed explanation, Michael! Aug 31 accepted Meaning of, and how to verify, a vector space *over* $\mathbb{R}$ Aug 31 comment Meaning of, and how to verify, a vector space *over* $\mathbb{R}$ @D B Lim: I put good advice into action!:) Aug 31 comment Meaning of, and how to verify, a vector space *over* $\mathbb{R}$ @Willie: Thank you, that explained it! I suggest you consider writing that textbook! gary: I have not seen or learnt about fields or finite fields yet. I'll keep an eye out for that though! Aug 31 asked Meaning of, and how to verify, a vector space *over* $\mathbb{R}$ Aug 31 comment Help with the proof of the characterization of linearly dependent sets @D B Lim: Thank you D B Lim! You're right, Lay has given me the impression that linear algebra is mostly about matrices... I'll pick the book up at my library right away! Thank you for the helpful suggestion! Aug 31 comment Help with the proof of the characterization of linearly dependent sets Thanks D B Lim! +1! Vector spaces are the next chapter in the book, so I'll have a go at these once I've had a look in that chapter. Aug 30 comment Help with the proof of the characterization of linearly dependent sets @D B Lim: Thank you! That makes perfect sense! Aug 30 accepted Help with the proof of the characterization of linearly dependent sets Aug 30 comment Help with the proof of the characterization of linearly dependent sets Thank you! I think I got it! Now the point with the second part, where v_1 is not zero, is that then not all numbers c_2 -> c_p can be zero (for it to be linearly dependent), which in turn leads to the fact that v_j is a linear combination of the preceding vectors... Have I kind of got it? I have at least got what I initially asked for, so I'm marking your post as the answer:) Aug 30 comment Help with the proof of the characterization of linearly dependent sets Sorry, I didn't mean to rephrase it. Do you mean that we're simply saying that v_1 is a trivial linear combination in this case; and that it could just as fine be a non-trivial combination as well (but for the sake of the proof we're assuming the former)? Aug 30 asked Help with the proof of the characterization of linearly dependent sets Aug 30 revised How to add binary decimals/1s complement Added tag. Aug 30 suggested approved edit on How to add binary decimals/1s complement Aug 30 comment For any prime $p > 3$, why is $p^2-1$ always divisible by 24? @Theo: Sorry, I did not consider that! I will read that discussion. Thank you for letting me know! It was definitely not my intention to flood the front page. (I was going through the list of "low-quality posts" in the review section).