mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 1000
Search took 0.25 seconds.
Search: Posts Made By: Nick
Forum: Soap Box 2021-07-29, 06:54
Replies: 25
Views: 2,847
Posted By Nick
The container ship that blocked the Suez canal...

The container ship that blocked the Suez canal for a while has finally arrived
in Rotterdam with about 14000 containers, containing everything from
school diaries to motorbikes (1000 of them).
Forum: Lounge 2021-07-28, 18:04
Replies: 1,012
Views: 92,978
Posted By Nick
From next year, the Dutch regulator will require...

From next year, the Dutch regulator will require all Internet Service Providers to allow their customers
to use their own modem/router instead of forcing them to take one chosen & administered by...
Forum: Other Mathematical Topics 2021-07-26, 08:29
Replies: 25
Views: 12,362
Posted By Nick
For anyone looking for a fun bit of summer...

For anyone looking for a fun bit of summer reading:
The discrete yet ubiquitous theorems of Carathéodory, Helly, Sperner, Tucker, and Tverberg...
Forum: Hobbies 2021-07-25, 08:16
Replies: 22
Views: 467
Posted By Nick
I once came across a Calculus textbook marked...

I once came across a Calculus textbook marked "Copyright year N" on sale in May of year N-1.
I wondered if students could simply copy it for the next 7 months.
Forum: LaurV 2021-07-22, 17:20
Replies: 10
Views: 401
Posted By Nick
The first version was made while they were still...

The first version was made while they were still at Stanford and the algorithm is therefore public.
Then they turned it into an American corporation...
Forum: Soap Box 2021-07-21, 20:09
Replies: 396
Views: 52,068
Posted By Nick
It could just be a coincidence (there will be...

It could just be a coincidence (there will be lots of times whten this
didn't happen - you don't tend to notice those).
If you are genuinely worried, I would suggest monitoring things like
your...
Forum: Number Theory Discussion Group 2021-07-10, 08:19
Replies: 9
Views: 602
Posted By Nick
We have \(2ax+b-y\equiv 0\pmod{4an}\) and...

We have \(2ax+b-y\equiv 0\pmod{4an}\) and \(\gcd(2a,4an)=2a\neq 1\).
If 2a does not divide b-y then there is no solution.
If instead b-y=2at for some integer t then \(x\equiv -t\pmod{2n}\).
Forum: Number Theory Discussion Group 2021-07-08, 21:57
Replies: 9
Views: 602
Posted By Nick
Yes (assuming you mean discr=(b*)²-4a*c* mod p). ...

Yes (assuming you mean discr=(b*)²-4a*c* mod p).
That is what we mean by Propostion 22 here (https://www.mersenneforum.org/showthread.php?t=21677)
Forum: Number Theory Discussion Group 2021-07-07, 09:20
Replies: 9
Views: 602
Posted By Nick
See section 2.3.2 in the 2nd edition of the book...

See section 2.3.2 in the 2nd edition of the book by Crandall and Pomerance:
"Prime Numbers , a computational perspective" (https://www.springer.com/gp/book/9780387252827)
Forum: Number Theory Discussion Group 2021-07-06, 06:49
Replies: 9
Views: 602
Posted By Nick
Yes, in this subforum already! ...

Yes, in this subforum already!
https://www.mersenneforum.org/showthread.php?t=22058
Forum: Lounge 2021-07-02, 18:17
Replies: 1,012
Views: 92,978
Posted By Nick
Great! The easy one to forget (for people from...

Great! The easy one to forget (for people from the UK) is health insurance,
but I assume you have that sorted too.
Forum: Other Mathematical Topics 2021-06-23, 21:13
Replies: 11
Views: 1,519
Posted By Nick
That's called a confetto!

That's called a confetto!
Forum: Lounge 2021-06-18, 16:17
Replies: 95
Poll: GIMPS shirts
Views: 25,348
Posted By Nick
"Taximeter cabriolet", which we shorten to "taxi"...

"Taximeter cabriolet", which we shorten to "taxi" and you shorten to "cab".
Forum: Languages -- Ancient & Modern, Human & Machine 2021-06-12, 11:57
Replies: 17
Views: 6,888
Posted By Nick
Silbo Gomero...

Silbo Gomero (https://en.wikipedia.org/wiki/Silbo_Gomero) is a whistled language used in the Canary Islands (specifically on La Gomera) to communicate over long distances across deep valleys or...
Forum: Lounge 2021-06-11, 18:01
Replies: 13
Views: 506
Posted By Nick
If I remember rightly, the format was simple...

If I remember rightly, the format was simple enough to reverse engineer with ease up to dBase III, but got somewhat messier after that.
The index files were separate, however, so using a hexdump...
Forum: Soap Box 2021-06-11, 08:13
Replies: 81
Views: 11,809
Posted By Nick
Lake Mead: Largest US reservoir dips to record...

Lake Mead: Largest US reservoir dips to record low
https://www.bbc.com/news/world-us-canada-57436860
Forum: Astronomy 2021-06-11, 08:11
Replies: 42
Views: 3,846
Posted By Nick
A great shot!

A great shot!
Forum: Astronomy 2021-06-10, 10:33
Replies: 42
Views: 3,846
Posted By Nick
We just viewed the partial eclipse here (with...

We just viewed the partial eclipse here (with Eclipse glasses), only about 17% covered but still impressive!
Forum: Miscellaneous Math 2021-06-03, 08:37
Replies: 30
Views: 1,241
Posted By Nick
The mathematics behind this is explained here....

The mathematics behind this is explained here. (https://www.mersenneforum.org/showthread.php?t=21717)
Forum: Soap Box 2021-05-30, 16:45
Replies: 396
Views: 52,068
Posted By Nick
It might fall foul of Lawful Interception...

It might fall foul of Lawful Interception regulations.
Forum: Soap Box 2021-05-28, 22:16
Replies: 35
Views: 3,838
Posted By Nick
Coincidence: I was just reading about a John...

Coincidence: I was just reading about a John Deere baler in a novel by Tom Spanbauer!
Forum: Lounge 2021-05-28, 11:58
Replies: 1,761
RIP
Views: 172,104
Posted By Nick
Kees de Jager...

Kees de Jager (https://en.wikipedia.org/wiki/Kees_de_Jager) Dutch astronomer
Forum: Tales From the Crypt(o) 2021-05-25, 16:23
Replies: 283
Views: 85,563
Posted By Nick
European Court of Human Rights rules against UK...

European Court of Human Rights rules against UK mass surveillance.
Article:...
Forum: Other Mathematical Topics 2021-05-25, 12:21
Replies: 25
Views: 12,362
Posted By Nick
Thanks to Mike for the following tip: ...

Thanks to Mike for the following tip:
https://artofproblemsolving.com/articles/files/SatoNT.pdf

Slight caveat on this one: the puzzles are good but the theory is not always completely precise or...
Forum: Lounge 2021-05-23, 08:59
Replies: 1,107
Views: 91,666
Posted By Nick
"Rocket plane flies to edge of space" ...

"Rocket plane flies to edge of space"
https://www.bbc.com/news/science-environment-57214988

It's a pity they mean the start of space and not the end...
Showing results 1 to 25 of 1000

 
All times are UTC. The time now is 22:45.


Thu Jul 29 22:45:17 UTC 2021 up 6 days, 17:14, 1 user, load averages: 1.97, 2.08, 2.09

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.