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  • 0 posts edited
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  • 116 votes cast
Jul
4
comment Summation formula name
Could someone please edit the formula for me so that the integrand of the first integral on the RHS is simply “f”? (I am an advocate of dropping the extra baggage.) – and edit the formula so that the integrand of the second integral is “f’w”? Thanks. (I’m struggling with a Chinese operating system, and a lack of knowledge of whatever markup system the rest of you are using for writing mathematical formulas.)
Jul
3
asked Summation formula name
Jun
29
asked Enlightening misunderstandings of test questions
Jun
28
accepted Are magic squares inevitable?
Jun
28
comment Are magic squares inevitable?
You're talking about relative abundance, whereas I had in mind absolute abundance. Nonetheless, you make a good point, and I think your answer is the most relevant/spot-on/sobering of those given, and so am up-voting it and accepting it.
Jun
28
comment Are magic squares inevitable?
I want to thank everyone for their sobering comments and answers.
Jun
28
comment Are magic squares inevitable?
Flase results? No surprise there, as this is only a heuristic. But I appreciate the specific example you give, and so am up-voting your answer.
Jun
28
comment Are magic squares inevitable?
I did an edit to make it clear that there is to be no overlap between selections. In other words, we are dealing with "normal" magic squares.
Jun
28
revised Are magic squares inevitable?
made it clear that there is no overlap between selections
Jun
28
answered Proof that $\sum\limits_{k=1}^nk^2 = \frac{n(n+1)(2n+1)}{6}$?
Jun
27
asked Are magic squares inevitable?
Jun
27
comment Are angles ever multiplied?
Bingo. This is the I-should-have-thought-of-that answer that I was looking for. I have up-voted this answer, and accepted it. I love MSE!
Jun
27
accepted Are angles ever multiplied?
Jun
26
revised Help to understand material implication
added 314 characters in body
Jun
26
asked Are angles ever multiplied?
Jun
25
comment How do you pronounce the symbol $'$ in $f'$?
This is part of a larger issue: Some symbols are pronounced using their name, and some are pronounced, at least in certain circumstances, using a special name. Besides the appostrophe being pronounced "prime" (when used to indicate a derivative), there are also the cases of the ampersand (&) being read "and" and the asterisk (*) being read "star".
Jun
25
comment Reference request: is mathematics discovered or created?
I don't understand the down-vote. It answered what the OP asked, and it's a great answer in its own right, so I'm up-voting this answer.
Jun
25
comment What makes $9$ special?
I was going to mention 'casting out nines' if no one else did, so I up-voted this answer.
Jun
25
comment Good Physical Demonstrations of Abstract Mathematics
I've often wondered about this too.
Jun
25
answered A challenge by R. P. Feynman: give counter-intuitive theorems that can be translated into everyday language