bio | website | math.haifa.ac.il/~seva |
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location | Israel | |
age | 51 | |
visits | member for | 3 years, 6 months |
seen | 28 mins ago | |
stats | profile views | 2,782 |
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Apr 17 |
comment |
Characterizing and counting boolean functions with all influences 1/2
Just a translation into the plain language of abelian groups: we are seeking to classify / count subsets $A\subset{\mathbb F}_2^n$ such that each one of the $n$ coordinate vectors has exactly $|A|-2^{n-2}$ representations as a sum of two elements of $A$. |
Apr 17 |
comment |
Cover one finite subset of integers by another one
The standard Ruzsa covering lemma says that $B$ can be covered by at most $|B-A|/|A|$ translates of the set $A-A$. I am pretty sure that you cannot replace here $A-A$ with $A$, although I cannot think of a counterexample off the top of my head. |
Apr 17 |
reviewed | Approve suggested edit on Advice for number theory library |
Apr 15 |
revised |
Symmetric matrices with $\rho(A)\gg\|A\|_\infty$
Tag edit, the extreme special case $\|A\|=\|A\|_\infty$ is discussed. |
Apr 12 |
revised |
Symmetric matrices with $\rho(A)\gg\|A\|_\infty$
Tags added, two particular cases mentioned, minor formatting |
Apr 11 |
asked | Symmetric matrices with $\rho(A)\gg\|A\|_\infty$ |
Mar 31 |
awarded | Nice Answer |
Mar 31 |
awarded | co.combinatorics |
Mar 30 |
awarded | Revival |
Mar 30 |
answered | Looking for a paper of Kemperman on semigroups |
Mar 28 |
awarded | Enlightened |
Mar 28 |
awarded | Nice Answer |
Mar 28 |
revised |
Consecutive non-quadratic residues
A general clean-up, extensions mentioned |
Mar 28 |
comment |
Disconnecting a three regular graph
@Gerry: I voted to close because I absolutely cannot understand the question. Certainly, if you remove enough edges from any graph, this will disconnect it - but how is this related to probability and 3-regularity? What does it mean "if I disconnect a graph, I get a subgraph"? What is the exact meaning of the sentence that follows? |
Mar 25 |
revised |
Consecutive non-quadratic residues
added 575 characters in body |
Mar 25 |
awarded | Citizen Patrol |
Mar 24 |
comment |
Consecutive non-quadratic residues
@GH: fixed, thanks! |
Mar 24 |
revised |
Consecutive non-quadratic residues
More typos fixed |
Mar 24 |
revised |
Consecutive non-quadratic residues
added 46 characters in body |
Mar 24 |
accepted | The height of the Perron-Frobenius eigenvector |