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awarded  Nice Answer 
10h

revised 
Dimension of incomplete matrix over finite fields.
Name of the article that I linked to was wrong 
Dec 19 
reviewed  Approve selfavoidance time of random walk 
Nov 26 
reviewed  Approve Absolutely continuous functions 
Nov 24 
reviewed  Close lowerbound for $Pr[X\geq EX]$ 
Nov 14 
reviewed  Approve Breaking down the co power of a topological space 
Nov 13 
reviewed  Reviewed every arithmetic progression contains a sequence of $k$ “consecutive” primes for possibly all natural numbers $k$? 
Nov 13 
reviewed  Close Oldest photographed mathematician 
Nov 10 
reviewed  Close How to solve definite integral involving exponential function 
Nov 10 
comment 
How to solve definite integral involving exponential function
The question shows no research effort. 
Nov 10 
comment 
How to solve definite integral involving exponential function
You mention that you want to perform some analysis on f. Most of the time, this can be done without getting a "closed form". So, your real question is about properties of this function, not about the closed form. 
Nov 10 
reviewed  Close Looking for the name of an infinite sequence 
Nov 10 
reviewed  Close Exploiting the Linearity of the Pullback 
Nov 5 
comment 
Probability of each edge in Kclique
My point is not so much that assisting a cheating student is unethical, but that the questions that are not on the level appropriate for MathOverflow (as defined in Help Center) should not be encouraged by being answered. 
Nov 5 
comment 
Probability of each edge in Kclique
I vote down as MO should not be a place where a solutions to standard exercises are given. 
Nov 5 
comment 
Probability of each edge in Kclique
This is not a researchlevel question, being a standard exercise. I vote to close as being offtopic for MO. 
Oct 31 
reviewed  Close Construct the best piecewise linear continuous function fitting given curve 
Oct 31 
reviewed  Close Difference between ZFC and ZF+GCH 
Oct 31 
comment 
Sylowsubgroups of the group of units of a finite field
Sometimes (p1)/2 is a prime, sometimes it is not. Conjecturally, the former happens infinitely often. There is no universal answer. Probably you should explain what you are looking for, and why, so that we can help. Are you interested in a worst case? Then define "worst". Are you interested in averagecase behavior, then what are you averaging over, p or n, etc. 
Oct 31 
reviewed  Reviewed Estimating a sum 