Question

Distribution of the sumset of two GF($q$) subsets

score 75 · Answer 1 · 2015-07-18 19:39:01

75

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Distribution of the sumset of two GF($q$) subsets

Published on 18 Jul 2015 - 19:39

score 1.7k · Answer 2 · 2015-11-11 19:33:00

1.7k

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If $A$ is closed and $B$ is compact in $\mathbb R^n$ then $A+B=\{a+b : a \in A \text{ and } b \in B\}$ is closed.

Published on 11 Nov 2015 - 19:33

score 238 · Answer 3 · 2015-11-17 16:59:53

238

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Prove there is a Bernstein set $B$ such that $B+B$ is also Bernstein

Published on 17 Nov 2015 - 16:59

score 2.7k · Answer 4 · 2015-11-19 04:31:06

2.7k

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Sum of open and closed sets

Published on 19 Nov 2015 - 4:31

score 102 · Answer 5 · 2015-11-27 12:24:43

102

Views

Find $S=(a-b)(99-c)(999-2c)+(b-c)(99-a)(999-2a)+(c-a)(99-b)(999-2b)$

Published on 27 Nov 2015 - 12:24

score 5k · Answer 6 · 2016-01-23 20:34:05

5k

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Sum of two open sets is open?

Published on 23 Jan 2016 - 20:34

score 141 · Answer 7 · 2016-04-04 17:02:31

141

Views

A set such that $A$, $A+A$ have density zero but $A+A+A$ has positive density.

Published on 04 Apr 2016 - 17:02

score 4.9k · Answer 8 · 2016-05-15 23:18:12

4.9k

Views

What's the difference between the Minkowski difference of $A$ and $B$ and the Minkowski sum of $A$ and $-B$?

Published on 15 May 2016 - 23:18

score 219 · Answer 9 · 2016-05-18 14:58:08

219

Views

Show that $|A+A|\geq (2n-1)$

Published on 18 May 2016 - 14:58

score 147 · Answer 10 · 2016-06-09 19:34:40

147

Views

Lower bound for arithmetic progressions in sumsets

Published on 09 Jun 2016 - 19:34

score 9.5k · Answer 11 · 2013-10-05 12:06:26

9.5k

Views

Sum of closed and compact set in a TVS

Published on 05 Oct 2013 - 12:06

score 649 · Answer 12 · 2013-11-30 09:42:39

649

Views

What is first edge position in the Minkowski sum of two convex polygons in the plane?

Published on 30 Nov 2013 - 9:42

score 97 · Answer 13 · 2013-12-02 18:12:51

97

Views

Question about Schnirelmann Density and Sumset: if $d(A) \ge \frac{1}{2}$ and $d(B) > 0$, wouldn't $d(A+B)=1$

Published on 02 Dec 2013 - 18:12

score 221 · Answer 14 · 2013-12-08 08:21:14

221

Views

Trying to understand an assumption in the proof of Mann's Theorem

Published on 08 Dec 2013 - 8:21

score 1.9k · Answer 15 · 2014-02-07 11:31:46

1.9k

Views

Number of vectors so that no two subset sums are equal

Published on 07 Feb 2014 - 11:31

List Question

Distribution of the sumset of two GF($q$) subsets

If $A$ is closed and $B$ is compact in $\mathbb R^n$ then $A+B=\{a+b : a \in A \text{ and } b \in B\}$ is closed.

Prove there is a Bernstein set $B$ such that $B+B$ is also Bernstein

Sum of open and closed sets

Find $S=(a-b)(99-c)(999-2c)+(b-c)(99-a)(999-2a)+(c-a)(99-b)(999-2b)$

Sum of two open sets is open?

A set such that $A$, $A+A$ have density zero but $A+A+A$ has positive density.

What's the difference between the Minkowski difference of $A$ and $B$ and the Minkowski sum of $A$ and $-B$?

Show that $|A+A|\geq (2n-1)$

Lower bound for arithmetic progressions in sumsets

Sum of closed and compact set in a TVS

What is first edge position in the Minkowski sum of two convex polygons in the plane?

Question about Schnirelmann Density and Sumset: if $d(A) \ge \frac{1}{2}$ and $d(B) > 0$, wouldn't $d(A+B)=1$

Trying to understand an assumption in the proof of Mann's Theorem

Number of vectors so that no two subset sums are equal

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