Mitch
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 Dec7 answered comparison of simplex and shortest path method Dec7 revised Are all good mathematicians fluent in computational aspects of mathematics grammar Dec3 comment How to prove that either $2^{500} + 15$ or $2^{500} + 16$ isn't a perfect square? Dude, you just gave him a fish. He'll die of starvation tomorrow. Nov23 revised Translating an argument into symbolic logic fixed logical error Nov22 comment Translating an argument into symbolic logic @Adam: Argh...I don't know what I was thinking. I meant absorption...fixing now. Nov11 awarded Nice Answer Nov9 comment Show that $\frac{(2n)!}{(n)!}=2^n(2n-1)!!$ @Pauly...if you call 'helping' = 'doing the entire problem for you' Oct25 awarded Popular Question Oct21 comment Are there any open mathematical puzzles? I was about to remark that this is genref because of the many lists of unsolved problems in mathematics. But then I noticed that the title specifically says 'puzzles'. But then I'm not sure what the difference is between 'puzzles' and mathematical problems in general. I mean I know it when I see it but... Oct21 answered Are there any open mathematical puzzles? Oct19 comment Are there any open mathematical puzzles? Oct15 comment Where did mathematicians learn how to do truth tables? @CharlesStewart: Sure, WIttgenstein wasn't incapable of understanding higher mathematics and I'm sure he would have been able to create new higher mathematics had he pursued it. I just haven't seen any evidence though of his writing's (all philosophical) influences on mathematicians (um...yes...Kripke wrote about him but wrote philosophically about Wittgenstein's non-mathematical philosophy). Oct5 comment Improbable vs Impossible? 'almost impossible' is not 'exactly zero' in any natural or informal language; that goes against any useful definition of 'almost'. Sep16 awarded Yearling Aug16 comment Connecting finite automata and regular languages in teaching/applications Yes, these are all good examples of uses of finite automata either in design or analysis of engineering systems, but does their interpretation as regular languages add anything meaningful? Well, Kleene closure really needs to be used meaningfully. Jul22 awarded Popular Question Jun22 comment Transformation of matrix So are you only allowed matrix operations? You want a 'closed' form that you can then manipulate? If you just want the results of such a matrix, just notate it: $A^{*}_{i,j} = A_{i, i+j}$ or 0 if $i>j$. Jun19 comment Where did mathematicians learn how to do truth tables? Yes, the specific strand of culture is difficult to specify, because there are language/nation separations (in addition to the faculty differentiation), but academic borrowing, too. Also, the 20th century has seen a lot of changes in communication, which complicates the matter. If forced, I'd have to limit it to English speaking culture (where things might be likely to have been borrowed from German or French, and doubtfully from Russian or Polish (but that would be very interesting!)) May29 answered Can $\frac{n!}{(n-r)!r!}$ be simplified? May19 comment Why the terms “unit” and “irreducible”? @user42912: 'unit' is not defined in your given definition. If you look at a definition, a unit divides a multiplicative identity, commutes with everything, and so has many similar properties to the multiplicative identity, which is often given the name '1' because it is so much like the integer 1.