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Search: Posts Made By: Nick
Forum: Lounge 2020-10-28, 21:54
Replies: 8
Views: 166
Posted By Nick
Current disadvantages: Students (or even...

Current disadvantages:


Students (or even some lecturers) with technical problems
Much less fits on a screen than on a pair of large blackboards
Distractions from a noisy home environment or...
Forum: Lounge 2020-10-28, 09:24
Replies: 937
Views: 50,987
Posted By Nick
Congratulations!

Congratulations!
Forum: GpuOwl 2020-10-24, 13:16
Replies: 39
Views: 886
Posted By Nick
It's logical because it respects concatenation: ...

It's logical because it respects concatenation:
if "wc -l a" gives m and "wc -l b" gives n then "cat a b|wc -l" gives m+n.
Forum: Lounge 2020-10-24, 10:14
Replies: 44
Views: 3,653
Posted By Nick
We all have moments like that!

We all have moments like that!
Forum: EdH 2020-10-22, 14:00
Replies: 14
Views: 301
Posted By Nick
I don't use Ubuntu but the rule of thumb with IP...

I don't use Ubuntu but the rule of thumb with IP problems is that they are either routing problems or filtering problems.
What does the routing table look like?
Forum: Lounge 2020-10-21, 20:51
Replies: 17
Views: 577
Posted By Nick
Happy Birthday! :smile:

Happy Birthday! :smile:
Forum: Lounge 2020-10-20, 10:54
Replies: 53
Views: 1,325
Posted By Nick
Welcome to the forum!

Welcome to the forum!
Forum: Lounge 2020-10-19, 20:04
Replies: 1,010
Views: 47,560
Posted By Nick
Nokia to build mobile phone network for the moon ...

Nokia to build mobile phone network for the moon
https://www.nokia.com/about-us/news/releases/2020/10/19/nokia-selected-by-nasa-to-build-first-ever-cellular-network-on-the-moon/

The moon doesn't...
Forum: Lounge 2020-10-19, 16:56
Replies: 968
Views: 52,091
Posted By Nick
"Time to straighten right out ... else you'll...

"Time to straighten right out ... else you'll wind up in jail....A message to you, Rudy..."
That old Rock Steady number seems appropriate somehow.
Forum: Lounge 2020-10-19, 10:35
Replies: 1,127
Views: 54,662
Posted By Nick
I think links like that should be accompanied...

I think links like that should be accompanied with a note of their political non-scientific origins.
Forum: Soap Box 2020-10-18, 09:15
Replies: 344
Views: 20,366
Posted By Nick
How smart devices are exploited for domestic...

How smart devices are exploited for domestic abuse
BBC article: https://www.bbc.com/news/technology-54554408
Forum: Math 2020-10-17, 12:09
Replies: 14
Views: 440
Posted By Nick
Peter Cameron question

Prof. Peter Cameron has put a quick question in his blog:
for which positive integers n are \(2^n-1\) and \(2^n+1\) both products of at most 2 distinct primes?
Link:...
Forum: Miscellaneous Math 2020-10-17, 10:00
Replies: 18
Views: 759
Posted By Nick
Feedback on version dated 15 October 2020: 7...

Feedback on version dated 15 October 2020:

7 Mersenne Numbers
Formula for factorization of \(M_{pq}\) is almost right!

9.1 Legendre symbol
Say p is an odd prime or p not equal to 2.
Typo...
Forum: Abstract Algebra & Algebraic Number Theory 2020-10-16, 08:05
Replies: 2
Views: 237
Posted By Nick
It's not my area (and I don't know how far you...

It's not my area (and I don't know how far you are already), but the books people usually start with are:


Eisenbud: Commutative Algebra with a view toward algebraic geometry
Cox, Little &...
Forum: Lounge 2020-10-16, 07:41
Replies: 1,316
Views: 71,857
Posted By Nick
Wasn't that the behaviour that brought humans...

Wasn't that the behaviour that brought humans first HIV and now Covid-19?
Forum: Lounge 2020-10-15, 20:12
Replies: 4,088
Views: 254,434
Posted By Nick
"Anything is a soldering kit if you're brave...

"Anything is a soldering kit if you're brave enough!"

Brilliant! :smile:
Forum: Miscellaneous Math 2020-10-15, 09:09
Replies: 18
Views: 759
Posted By Nick
Some feedback on the version dated 12 October...

Some feedback on the version dated 12 October 2020:

2.1 Primes.
I find the first sentence confusing (though that may just be me).
Your explanation of what prime numbers are at the start of...
Forum: Math 2020-10-14, 17:49
Replies: 12
Views: 509
Posted By Nick
It's an example of what's called a telescopic...

It's an example of what's called a telescopic sum: if you multiply out the brackets on the right hand side, then all terms cancel except for the first and the last.
If it's not clear, try writing it...
Forum: Math 2020-10-14, 15:02
Replies: 12
Views: 509
Posted By Nick
So do we!: proposition 16 here...

So do we!: proposition 16 here (https://www.mersenneforum.org/showthread.php?t=21658)
Forum: Lounge 2020-10-14, 08:48
Replies: 1,127
Views: 54,662
Posted By Nick
We had several anchored off the coast here,...

We had several anchored off the coast here, visible from the shore by Noordwijk.
They are now moving to Southampton for better shelter from coming storms.
Forum: Lounge 2020-10-13, 07:37
Replies: 74
Views: 1,890
Posted By Nick
Absolutely! I still remember a great visit to...

Absolutely! I still remember a great visit to the Glasgow Transport Museum (https://www.glasgowlife.org.uk/museums/venues/riverside-museum),
and you come across locomotives built in Scotland all...
Forum: Miscellaneous Math 2020-10-11, 22:26
Replies: 18
Views: 759
Posted By Nick
Feedback on version dated 11 October 2020 (wow...

Feedback on version dated 11 October 2020 (wow you've written a lot!)
p5 The proof that root 2 is irrational relies on the uniqueness of prime factorization.
As this is a special property of the...
Forum: Miscellaneous Math 2020-10-11, 07:44
Replies: 18
Views: 759
Posted By Nick
There are a number of errors at the start, some...

There are a number of errors at the start, some just details of definitions but others hiding more important points.
How it would be best to resolve these depends strongly on who you are writing...
Forum: jvang 2020-10-06, 07:59
Replies: 19
Views: 668
Posted By Nick
OK well LaurV clearly doesn't think that that...

OK well LaurV clearly doesn't think that that will be a quick way to get a deeper insight into the hardware, and he's an expert at this stuff!
If you like hardware enough to consider reading a...
Forum: jvang 2020-10-05, 07:57
Replies: 19
Views: 668
Posted By Nick
You're right, it's confusing! That's because...

You're right, it's confusing! That's because what it gets used for has changed so quickly.
This Intel document is a few years old now but still gives a good introduction:...
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