bio | website | math.haifa.ac.il/~seva |
---|---|---|
location | Israel | |
age | 52 | |
visits | member for | 4 years, 9 months |
seen | 10 mins ago | |
stats | profile views | 3,313 |
.
Jul 6 |
comment |
Uniformly small sums of roots of unity
@Greg: Not that I needed a confirmation or pretended to have an answer. I mostly wanted to outline a direction, in case you are interested: to check known constructions of pseudo-random sets in ${\mathbb Z}/n{\mathbb Z}$. |
Jul 6 |
answered | Uniformly small sums of roots of unity |
Jul 3 |
comment |
Differences of consecutive ordered fractional parts
@Clark Kimberling: I expanded my answer a little to address the general case of $h\ne 0$. Does this answer your question? |
Jul 1 |
revised |
Differences of consecutive ordered fractional parts
added 545 characters in body |
Jul 1 |
comment |
When are the powers of 2 sum-free mod n?
What are the values of $n$ smaller than, say, $100$, with the property in question? What does OEIS say? |
Jun 30 |
revised |
Differences of consecutive ordered fractional parts
Typo fixed |
Jun 30 |
answered | Differences of consecutive ordered fractional parts |
Jun 1 |
awarded | Revival |
May 31 |
revised |
When is $1+a+a^2+\dotsb+a^{{\rm ord}_n(a)-1}$ divisible by $n$?
deleted 45 characters in body; edited title |
May 30 |
answered | When is $1+a+a^2+\dotsb+a^{{\rm ord}_n(a)-1}$ divisible by $n$? |
May 28 |
revised |
Sumsets and dilates: does $|A+\lambda A|<|A+A|$ ever hold?
Just fixing (some) typos |
May 28 |
accepted | Sumsets and dilates: does $|A+\lambda A|<|A+A|$ ever hold? |
May 28 |
revised |
Sumsets and dilates: does $|A+\lambda A|<|A+A|$ ever hold?
added 288 characters in body |
May 27 |
asked | Sumsets and dilates: does $|A+\lambda A|<|A+A|$ ever hold? |
May 26 |
comment |
When is $1+a+a^2+\dotsb+a^{{\rm ord}_n(a)-1}$ divisible by $n$?
As a very basic observation, you have $S_n(\bar a)=0$ provided that both $a$ and $a-1$ are co-prime with $n$. |
May 25 |
awarded | Necromancer |
May 22 |
awarded | Revival |
May 22 |
revised |
Minimal “sumset basis” in the discrete linear space $\mathbb F_2^n$
added 39 characters in body |
May 22 |
revised |
Minimal “sumset basis” in the discrete linear space $\mathbb F_2^n$
added 23 characters in body; edited tags |
May 22 |
answered | Minimal “sumset basis” in the discrete linear space $\mathbb F_2^n$ |