http://www.vdwnumbers.org/vdwnumbers/
Team
Van Der Waerden Numbers
Schade, noch ein Projekt weniger:
Thread kann also stillgelegt werden...Paper Posted; End of Project
27 Oct 2016, 1:29:07 UTC
Sorry for my recent inactivity. A paper has been posted on arxiv for this project at https://arxiv.org/abs/1603.03301, and has been submitted for publication. I would like to thank all the volunteers who contributed their resources to this project. The project will no longer generate new work, but will incorporate any results received.
Life is Science, and Science rules. To the universe and beyond
Member of BOINC@Heidelberg + BOINC Confederation
My BOINC-Stats / My Badges-List
Member of BOINC@Heidelberg + BOINC Confederation
My BOINC-Stats / My Badges-List
Re: Van Der Waerden Numbers
Überraschenderweise meldete sich das Projekt zum Jahreswechsel mit neuer Arbeit zurück:
Damit kommt der Thread zurück in die Mathe-Kategorie.
Zwischenzeitlich war die Homepage etwas zerschossen, jetzt kann man sich aber wieder anmelden.29 Dec 2020, 18:19:49 UTC Revival of the Project
This project is in the process of being revived in light of comments I have received that optimal primes for two colors and large lengths exhibit strange properties. In particular, the best primes for lengths 23, 24, and 25 are one more than 6 * p, 4 * 47 * p, and 2 * 24 * p, the ps all being primes. Striking in particular is the multiplicative composition of the latter two; 24 = 25 - 1 and 47 = 2 * 24 - 1.
Loop unrolling, faster progression checking, and bit packing have made for a much faster program, making it feasible to run the two-color case up to 4 billion. The computation should give insight into:
The growth of low-color, high-length van der Waerden numbers
The additive distribution of quadratic residues modulo a prime
Damit kommt der Thread zurück in die Mathe-Kategorie.
Life is Science, and Science rules. To the universe and beyond
Member of BOINC@Heidelberg + BOINC Confederation
My BOINC-Stats / My Badges-List
Member of BOINC@Heidelberg + BOINC Confederation
My BOINC-Stats / My Badges-List
Re: Van Der Waerden Numbers
Die Homepage ist wohl seit längerem nicht mehr verfügbar und die Stats-Seiten haben das Projekt schon stillgelegt.
Machen wir das also hier auch...
Machen wir das also hier auch...
Life is Science, and Science rules. To the universe and beyond
Member of BOINC@Heidelberg + BOINC Confederation
My BOINC-Stats / My Badges-List
Member of BOINC@Heidelberg + BOINC Confederation
My BOINC-Stats / My Badges-List