From b36ff8cf84daa8beb4e4cf5417d665730968516b Mon Sep 17 00:00:00 2001 From: Chris Cox Date: Tue, 13 Dec 2022 15:25:45 -0600 Subject: New paper submitted --- content/papers.bib | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'content/papers.bib') diff --git a/content/papers.bib b/content/papers.bib index ea39d7b..246e3b6 100644 --- a/content/papers.bib +++ b/content/papers.bib @@ -1,6 +1,21 @@ +@unpublished{sipp, + author = {Brennan, Zach and Curtis, Bryan and Gomez-Leos, Enrique and Hadaway, Kimberly and Hogben, Leslie and Thompson, Conor}, + title = {Orthogonal realizations of random sign patterns and other applications of the SIPP}, + year = {2022}, + month = {Dec}, + url = {http://arxiv.org/abs/2212.05207}, + eprint = {2212.05207}, + eprintclass = {math.CO}, + eprinttype = {arxiv}, + keywords = {submitted}, + author+an = {1=earlygrad; 3=earlygrad; 4=earlygrad; 6=earlygrad}, + abstract = {A sign pattern is an array with entries in $\{+,-,0\}$. A matrix $Q$ is row orthogonal if $QQ^T = I$. The Strong Inner Product Property (SIPP), introduced in [B.A.~Curtis and B.L.~Shader, Sign patterns of orthogonal matrices and the strong inner product property, Linear Algebra Appl. 592: 228--259, 2020], is an important tool when determining whether a sign pattern allows row orthogonality because it guarantees there is a nearby matrix with the same property, allowing zero entries to be perturbed to nonzero entries, while preserving the sign of every nonzero entry. This paper uses the SIPP to initiate the study of conditions under which random sign patterns allow row orthogonality with high probability. Building on prior work, $5\times n$ nowhere zero sign patterns that minimally allow orthogonality are determined. Conditions on zero entries in a sign pattern are established that guarantee any row orthogonal matrix with such a sign pattern has the SIPP.} +} + @unpublished{unicorns, author = {King, Emily J. and Mixon, Dustin G. and Parshall, Hans}, title = {Uniquely optimal codes of low complexity are symmetric}, + year = {2020}, eprint = {2008.12871}, eprintclass = {math.CO}, eprinttype = {arxiv}, -- cgit v1.2.3