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May
23
revised Floer theory or Floer homology, an introduction for physicists needed
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May
23
revised Floer theory or Floer homology, an introduction for physicists needed
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May
22
revised Product of all elements in an odd finite abelian group is 1
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May
22
awarded  Civic Duty
May
21
awarded  Citizen Patrol
May
20
revised Elliptic Curves and Points at Infinity
fixed typo in title
May
20
suggested approved edit on Elliptic Curves and Points at Infinity
May
20
answered What math should a computer scientist take in college?
May
20
comment Probability of a point taken from a certain normal distribution will be greater than a point taken from another?
Just to be sure: do you consider the two draws to be strictly independent, i.e. the mechanism simulated by the second draw is not modified or influenced by the value of the first? If this is the case, the problem can be rephrased very simply, while perhaps not realistic. Also note that there is Cross-Validated, the SE site for statistical Q&A.
May
20
revised Totally ordered abelian group
spelling and grammar
May
20
suggested approved edit on Totally ordered abelian group
May
20
comment Logic Puzzle of the age of three sons
@Amy : see my answer to R. Israel. No this is not a standard, just a possible thought process of the problem's author. As these problems are supposed to make youngsters manipulate properties of integers, this made-up rule is a way to introduce the composite/prime distinction in the problem.
May
20
comment Logic Puzzle of the age of three sons
@Robert Israel: I agree with you, and I should not have presented my interpretation as if I believed that buildings are somehow figurate numbers. Just a hint or a trick toward a possible solution. As user6312 said, we are not doing mathematics here. We are just trying to outguess/reverse engineer a very vague and inconsistent fantasy world which is more or less shared among variants of these kinds of problem. This riddle is only a support for successive hypothesis and manipulation of integers, not a scientific slice of reality.
May
19
comment Logic Puzzle of the age of three sons
@svenkatr : You are right that this way was not listed. But if there is (one) older son, 1,6,6;13 is not possible.
May
19
comment Logic Puzzle of the age of three sons
@El'endia : a building has several floors with the same number of windows at each floor, so the number must be composite and not prime.
May
19
comment A Question about p-primary Group
@Arturo: I asked only to better understand etiquette on math.SE.
May
19
awarded  Tag Editor
May
19
revised algebraic-topology wiki excerpt
added 142 characters in body
May
19
suggested approved edit on algebraic-topology tag wiki excerpt
May
19
wiki created algebraic-topology excerpt