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visits member for 1 year, 7 months
seen 18 hours ago

Sep
18
comment There is no smallest infinity in calculus?
Perfect. Saying that "$= \infty$" is an abbreviation for a longer statement is exactly the correct way to think about infinity in this context (and what I was taught that it formally meant). Unless you know what you are doing, any other interpretation will lead you into trouble.
Aug
22
comment Necessary and sufficient condition for a directed graph be Eulerian circuit and Hamilton cycle
Sorry to nitpick, but doesn't a finite connected digraph always contain at least one edge? (Unless it has a single vertex, in which case it does technically have an Eulerian circuit.)
Aug
22
comment Prove that the 25 people can be seated in this way
How do you know that 1 points to 2 and so on? I am sure that it does so here, but it's not clear to me how you could be sure starting out that this would work.
Jul
14
comment Apparent Paradox in the Idea of Random Numbers
@EricTowers - to understand your question is to know the answer to the OP.
Jul
10
comment Lebesgue density strictly between 0 and 1
I'm pleasantly surprised to find that my thesis has been of use to someone!
Jul
4
comment Condensation point of Cantor set
Excellent answer, as simple as possible and no simpler.
Jul
3
comment When does the integral preserve strict inequalities?
Not very helpful. If you don't know the answer to the OP's question you probably don't know about Lebesgue integration on abstract measure spaces. And if you do, the above is probably quite obvious to you.
Jul
1
comment What is the quickest way to show that the integral equals zero?
What calculation do you think he was doing?
Jul
1
comment What is the quickest way to show that the integral equals zero?
Do you think your 'method' is mathematically different in any way to what the OP did?? If so, how?
Jul
1
comment What is the truth table for demorgan's law?
You haven't explained where the OP has gone wrong.
Jul
1
comment What is the quickest way to show that the integral equals zero?
Have you read the other answers and comments? The top voted answer says that the way the OP answered the question isn't particularly tedious. Did you actually notationally apply a shift to the function and calculate that it was an odd polynomial (which would have been quite tedious) ? Or did you just reason that the factors were symmetric about that point? You said in your last comment 'the way I did this', where 'this' refers to doing what the OP did. I'm genuinely curious as to whether you think your 'method' is mathematically different in any way to what the OP did, and if so, how??
Jul
1
comment What is the quickest way to show that the integral equals zero?
"I showed it by proving that [it] is an odd function w.r.t. $\frac{a+b}{2}$". Clearly for you, this is very different to 'shifting first' and then showing something is an odd function.
Jul
1
comment Why is a rectangle a parallelogram, but a parallelogram is not a rectangle?
I think it is perfectly valid to answer a question with a rhetorical question, which illustrates the answer by analogy, and this answer is a great example of that. Don't just look at the question mark at the end and shout 'comment!'
Jul
1
comment What is the quickest way to show that the integral equals zero?
Can you explain how this is different to what the OP did?
Jun
30
comment What is the quickest way to show that the integral equals zero?
That's exactly what he said he did, isn't it?
Jun
30
comment Is it okay to reverse engineer proofs in homework questions?
@CompuChip, you've repeated a confusion that Deepak made 7 hours earlier and that two people have since pointed out.
Jun
27
comment How to tell if a Fibonacci number has an even or odd index
The problem with this is that you have to multiply by an approximation to $\phi$ and then determine whether a number very very close to an integer is bigger or smaller.
Jun
27
comment How to tell if a Fibonacci number has an even or odd index
I don't see how your approximate method can possible work, unless all Fibonacci values have different numbers of digits. Even in binary this is not true.
Jun
11
comment 'Obvious' theorems that are actually false
This is not a mathematical statement, nor is it false.
Jun
11
comment 'Obvious' theorems that are actually false
@deed02392 No it doesn't, but this question is exactly why the 'clay counter-example' is not obvious.