Ricardo Altamirano
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 Feb 11 comment What exactly are eigen-things? Just a possible typo, but did you leave out the word "behaviour" in the first sentence? "Eigenvectors are those vectors that exhibit especially simple [behaviour] under..." Feb 8 accepted What course sequence should I study in order to build a foundation for studying cryptography and signal processing? Feb 7 comment What course sequence should I study in order to build a foundation for studying cryptography and signal processing? I see cryptography and cryptanalysis and inextricably linked, so I would probably include the latter in my efforts as well (perhaps after I've covered significant quantities of material in cryptography). Feb 7 comment What course sequence should I study in order to build a foundation for studying cryptography and signal processing? @TMM Good to know. I vaguely remembered reading that the study of elliptic curves was useful in cryptography, and that it relied on complex analysis somewhat. Feb 7 asked What course sequence should I study in order to build a foundation for studying cryptography and signal processing? Feb 3 awarded Editor Oct 7 awarded Student Oct 7 accepted How do I find the variance of a linear combination of terms in a time series? Oct 7 comment How do I find the variance of a linear combination of terms in a time series? @did Ah, ok. Post your comments as an answer and I'll accept it immediately. Thank you for the help. Oct 7 comment How do I find the variance of a linear combination of terms in a time series? @did Then the condition that $ε_{t-3} = ε_{t-2} = 1$ doesn't change the problem in the slightest, correct? Oct 7 asked How do I find the variance of a linear combination of terms in a time series? Aug 12 awarded Organizer Aug 12 revised What does the notation $[0,1)$ mean? remove irrelevant tag Aug 12 suggested approved edit on What does the notation $[0,1)$ mean? Jul 9 awarded Supporter Jun 18 awarded Autobiographer Jun 13 awarded Scholar