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Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
28
awarded  Popular Question
Jun
26
awarded  Good Answer
Jun
10
awarded  Nice Answer
May
16
awarded  Nice Question
May
12
reviewed Approve Is the quotient ring $\mathbb{Z}_4[x]/<x^n-1>$ a vector space?
May
12
reviewed Approve A tricky question on sequences of functions.
May
11
comment Integrality Conjectures
@robjohn: My student posted material from my unpublished manuscripts. I have asked that he delete all of the offending posts including this one. He has agreed. If you have moderator privileges to help delete these, please do so.
May
9
revised GCD function and relation between Hurwitz and Riemann zeta function
deleted 3 characters in body
May
9
awarded  Informed
May
9
revised Summation of Dedekind sums to zero
deleted 693 characters in body
May
8
awarded  Nice Question
Apr
22
awarded  Nice Answer
Mar
31
awarded  Good Answer
Feb
17
accepted Solution Multiplicity of the Diophantine Equation $k = b(a - \gcd(a,b))$.
Feb
17
revised When is an Indefinite Quadratic Form over the Non-negative Integers Universal?
added 38 characters in body
Feb
17
asked When is an Indefinite Quadratic Form over the Non-negative Integers Universal?
Feb
7
comment Find the sum of all the multiples of 3 or 5 below 1000
The first two sums account for multiples of $3$ and $5$, the last sum accounts for over-counting multiples of $15$ (which can appear in either of the first two sums).
Jan
24
revised Fractional Part Double Summations
deleted 2 characters in body