Istvan Chung
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 Apr 21 comment Why don't we define “imaginary” numbers for every “impossibility”? Several years later, this answer makes a little more sense to me in terms of adjoining elements to rings :) Apr 21 comment Why don't we define “imaginary” numbers for every “impossibility”? Several years later, I can finally understand what this answer was saying! Nov 23 comment What is the fallacy in this proof? The error is elsewhere, as described in other answers. It is in fact true that (4 - 9/2)^2 = (5 - 9/2)^2 Jun 2 awarded Yearling Dec 28 comment Easy example why complex numbers are cool And in particular, that $e^{\tau{}i} = 1$ Dec 10 awarded Excavator Dec 8 awarded Caucus Oct 2 awarded Quorum Sep 1 comment What could be better than base 10? Doesn't that imply that you need a potentially unbounded number of symbols to represent large numbers? If a number requires $n$ factorial digits, then you need $n$ symbols to represent the most significant digit. In a classic base $B$, you only ever need $B$ symbols. Aug 31 revised Solving a logarithmic expression without a calculator clarified log base Aug 31 suggested approved edit on Solving a logarithmic expression without a calculator Aug 28 comment What could be better than base 10? @MJD If you want to use your hands and are allowed to distinguish between fingers on each hand, then binary is clearly optimal, allowing you to count from 0 to 1024 (half-open). Aug 28 comment What could be better than base 10? Um... call me dumb, but in what base do you represent each $a_i$, considering that no constant finite base will suffice once $i!$ is greater than it? Aug 24 revised If there are obvious things, why should we prove them? fixed grammar, removed gender-specific "man". Aug 24 suggested approved edit on If there are obvious things, why should we prove them? Jun 26 awarded Custodian Jun 12 comment Mathematical research of Pokémon @JairTaylor right- that paper uses some clever Pokémon-engineering to ensure the outcome of each battle beforehand, so it doesn't really go into this :) Jun 2 awarded Yearling May 31 comment Are problems about finding the next term of a sequence mathematical? "I find succeeding numbers of a sequence mathematical; I understand equations, both the simple and quadratical..." (I initially mis-parsed the title, with "mathematical" modifying "sequence" :) May 27 reviewed No Action Needed Limit of $\frac{\sin(xy^2)}{x^2+y^2}$ as $x\to0$ and $y\to0$