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Forum: Science & Technology 2021-02-17, 17:18
Replies: 81
Views: 6,322
Posted By Till
:goodposting:

:goodposting:
Forum: Lounge 2021-02-09, 18:50
Replies: 88
Views: 3,147
Posted By Till
In my region, it all turned out fine. As...

In my region, it all turned out fine.

As predicted we got a nice snow surface of ~20 cm in average (of course because of the wind it is 5cm in some places and 50cm in others). No ice rain except...
Forum: Lounge 2021-02-06, 20:55
Replies: 88
Views: 3,147
Posted By Till
Interestingly, in northern Germany, 1978 featured...

Interestingly, in northern Germany, 1978 featured the hardest winter storm remembered since then, too. See e.g. (german source)
...
Forum: Lounge 2021-02-06, 17:07
Replies: 88
Views: 3,147
Posted By Till
Quite impressive ;-) You meant 6...

Quite impressive ;-)




You meant 6 mm, right?
Forum: Lounge 2021-02-06, 15:46
Replies: 88
Views: 3,147
Posted By Till
Dr. Sardonicus did. The map seems to...

Dr. Sardonicus did.



The map seems to get updated regularly.


Edit: I didn't update before posting, sorry.
Forum: Lounge 2021-02-06, 15:32
Replies: 88
Views: 3,147
Posted By Till
I am living on the northern edge of the "violet...

I am living on the northern edge of the "violet zone". The weather forecast looks interesting but not catastrophical. Probably we'll get around 20 cm snow by tomorrow. The temperatures may drop to...
Forum: ONeil 2021-01-04, 22:17
Replies: 84
Views: 2,339
Posted By Till
Do you remember which type of cancer? I just...

Do you remember which type of cancer?
I just had a friend dying of https://en.wikipedia.org/wiki/Glioblastoma in december. I thought that is the most aggressive brain cancer and didn't hear of any...
Forum: Analysis & Analytic Number Theory 2020-10-11, 18:11
Replies: 8
Views: 5,859
Posted By Till
For completeness I'ld like to add that it's more...

For completeness I'ld like to add that it's more than counting.

For any n>2, we can obtain the values of A004215 (natural numbers representable by 4 squares but no less) < 2^n from the set of...
Forum: Analysis & Analytic Number Theory 2020-09-21, 16:27
Replies: 8
Views: 5,859
Posted By Till
In my opinion, any cross-reference in OEIS is a...

In my opinion, any cross-reference in OEIS is a big help.
Forum: Analysis & Analytic Number Theory 2020-09-21, 14:44
Replies: 8
Views: 5,859
Posted By Till
Thanks for your analysis. I submitted the...

Thanks for your analysis. I submitted the conjecture to OEIS.
Forum: Analysis & Analytic Number Theory 2020-09-20, 16:38
Replies: 8
Views: 5,859
Posted By Till
Sorry, I made a little mistake: It is...

Sorry, I made a little mistake: It is http://oeis.org/A004215, not A004015...
Forum: Analysis & Analytic Number Theory 2020-09-20, 12:23
Replies: 8
Views: 5,859
Posted By Till
Quadratic residue counts related to four squares representation counts

Hi all,
today I found something curious...

Let X(m) be the number of distinct quadratic residues mod m. (A023105 for m=2^n)
Let Y(m) be the number of n < m that can be expressed as a sum of 4...
Forum: Puzzles 2020-09-03, 15:41
Replies: 33
Views: 8,076
Posted By Till
I see... Compare that to...

I see... Compare that to http://www.research.ibm.com/haifa/ponderthis/challenges/September2020.html


Just wondering how long it takes...
Forum: Puzzles 2020-09-03, 15:12
Replies: 33
Views: 8,076
Posted By Till
Guys, you are worrying me... Shouldn't the...

Guys, you are worrying me...
Shouldn't the permutation (0 2) lead to the rules

2 -> 0
1 -> 1
0 -> 2
instead of

2 -> 1
1 -> 0
Forum: Puzzles 2020-08-31, 14:20
Replies: 33
Views: 8,076
Posted By Till
The challenge description is buggy, or not?

The challenge description is buggy, or not?
Forum: Miscellaneous Math 2020-08-27, 16:56
Replies: 57
Views: 12,021
Posted By Till
Yes, one should not name stuff after himself. ...

Yes, one should not name stuff after himself.
You should have one or two friends that do that for you :razz::razz:

Apart from that: I didn't look at the paper but the implementation I got looks...
Forum: Miscellaneous Math 2020-08-26, 19:10
Replies: 57
Views: 12,021
Posted By Till
I have been provided with a Java implementation...

I have been provided with a Java implementation of this sieve a couple of months ago. You can find it here:...
Forum: Lounge 2020-08-25, 17:52
Replies: 83
Views: 9,667
Posted By Till
Just noticed that I have such numbers, too. Not...

Just noticed that I have such numbers, too. Not too impressive ones, though: Erdös=5 and Dijkstra=6. But hey, better than nothin' :smile:
https://www.csauthors.net/tilman-neumann/
Forum: Factoring 2020-08-22, 15:57
Replies: 3
Views: 3,007
Posted By Till
Apart from the 2- (or even 3-) large primes...

Apart from the 2- (or even 3-) large primes variant and the small primes variant I would like to mention:

1. It should be SIQS
2. Knuth-Schroeppel multiplier
3. Block-Lancos or Block-Wiedemann...
Forum: Lounge 2020-08-19, 15:21
Replies: 17
Views: 4,405
Posted By Till
German "Karacho" (speed, velocity) stems from...

German "Karacho" (speed, velocity) stems from spanish "carajo" (dick).


I wonder if Juan Manuel Fangio had some influence to form that word ;-)
Forum: Lounge 2020-08-13, 19:45
Replies: 1,323
Views: 97,819
Posted By Till
Yesterday, the UK took around 5000 death from its...

Yesterday, the UK took around 5000 death from its COVID death toll list...



From https://www.worldometers.info/coronavirus/country/uk/


1,009 new cases and 20 new deaths in the United...
Forum: Lounge 2020-08-13, 19:35
Replies: 14
Views: 3,644
Posted By Till
Yeah, selling their data would be the most...

Yeah, selling their data would be the most logical thing.
I see that now they have a "contact" option: https://www.worldometers.info/contact/
This has not been the case when I created this thread....
Forum: Miscellaneous Math 2020-08-12, 21:09
Replies: 80
Views: 9,063
Posted By Till
Yep :-/ Thanks for the...

Yep :-/





Thanks for the explanation. There is so much to learn...
Forum: Miscellaneous Math 2020-08-11, 20:59
Replies: 80
Views: 9,063
Posted By Till
Uh I think I got the last bit... "de" vs. "bi" is...

Uh I think I got the last bit... "de" vs. "bi" is the pun?
Forum: Miscellaneous Math 2020-08-11, 19:53
Replies: 80
Views: 9,063
Posted By Till
I understood that much... Good night :cool:

I understood that much... Good night :cool:
Showing results 1 to 25 of 426

 
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