Flavius
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 Dec 5 awarded Autobiographer Apr 16 awarded Popular Question Oct 10 accepted Proof of $(A \cap B) \cup (B \cap C) \cup (C \cap A) = (A \cup B) \cap (B \cup C) \cap (C \cup A)$ Oct 9 comment Proof of $(A \cap B) \cup (B \cap C) \cup (C \cap A) = (A \cup B) \cap (B \cup C) \cap (C \cup A)$ I don't get what you mean with the first method, and I have used the two properties in the "another method" you have suggested, and I got stuck at the step I have mentioned in the question. Please enlighten me. Oct 9 revised Proof of $(A \cap B) \cup (B \cap C) \cup (C \cap A) = (A \cup B) \cap (B \cup C) \cap (C \cup A)$ added 45 characters in body Oct 9 asked Proof of $(A \cap B) \cup (B \cap C) \cup (C \cap A) = (A \cup B) \cap (B \cup C) \cap (C \cup A)$ Jul 2 awarded Curious Jun 25 accepted Getting a feel for the transformation A on vector x which lies outside of any eigenspace Jan 22 accepted Orthogonal matrix Q of A such that $Q^T A Q$ is a diagonal matrix Jan 22 asked Orthogonal matrix Q of A such that $Q^T A Q$ is a diagonal matrix Jan 22 comment Calculating Diagonal Matrix, too many zeroes in the eigen vectors, what now? I see, accepted! Jan 22 accepted Calculating Diagonal Matrix, too many zeroes in the eigen vectors, what now? Jan 22 comment Calculating Diagonal Matrix, too many zeroes in the eigen vectors, what now? I was afraid of that for the same reason, however I have to calculate the jacobi iteration starting at $0$, and I see in the lecture they've found out the diagonal matrix $$D = \left(\begin{matrix} 1 & 0 & 0 \\ 0 & 2 & 0 \\ 0 & 0 & 1 \end{matrix}\right)$$ Jan 22 asked Calculating Diagonal Matrix, too many zeroes in the eigen vectors, what now? Jan 21 accepted How would you model subjective opinions like “how fast time passes”? Jan 21 comment How would you model subjective opinions like “how fast time passes”? Ok, and then? Let's assume I've established that my assumption was completely right (for the sake of simplicity), then how do I predict how a student would react to a given tuple $(T,D,O,I,M)$? I'm interesting in saying "Student X will say that this was [0,1] hard". Jan 21 asked How would you model subjective opinions like “how fast time passes”? Jan 16 awarded Critic Jan 15 revised Getting a feel for the transformation A on vector x which lies outside of any eigenspace added 127 characters in body Jan 15 asked Getting a feel for the transformation A on vector x which lies outside of any eigenspace