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Forum: Number Theory Discussion Group 2020-10-23, 00:26
Replies: 9
Views: 162
Posted By Dr Sardonicus
Once upon a time, long long ago, I posted a link...

Once upon a time, long long ago, I posted a link to a paper discussing this, Prime Number Races (https://dms.umontreal.ca/~andrew/PDF/PrimeRace.pdf).
Forum: Puzzles 2020-10-22, 23:49
Replies: 3
Views: 68
Posted By Dr Sardonicus
Starting at the upper left, and proceeding...

Starting at the upper left, and proceeding clockwise around the perimeter, there are a number of objects with possibly symbolic meanings.

An oil lamp.
Lightning bolt (?)
Scales
Shield...
Forum: Science & Technology 2020-10-22, 16:41
Replies: 30
Views: 1,798
Posted By Dr Sardonicus
Unfortunately, the previous poster failed to...

Unfortunately, the previous poster failed to emphasize the main problem:

It seems that drifting is the snow issue. The old station was buried under so much snow, it was ordered sealed because...
Forum: Lounge 2020-10-22, 16:10
Replies: 1,508
RIP
Views: 102,462
Posted By Dr Sardonicus
Harry Houdini and Sherlock Holmes creator Arthur...

Harry Houdini and Sherlock Holmes creator Arthur Conan Doyle became friends, but Doyle was a Spiritualist, and their friendship ended over Houdini's campaign against phony Spiritualist mediums.
...
Forum: Number Theory Discussion Group 2020-10-22, 15:34
Replies: 9
Views: 162
Posted By Dr Sardonicus
K-TUPLE Permissible Patterns...

K-TUPLE Permissible Patterns (http://www.opertech.com/primes/k-tuples.html)
Forum: Lounge 2020-10-22, 15:01
Replies: 1,508
RIP
Views: 102,462
Posted By Dr Sardonicus
Would a fraudster setting up a GoFundMe page for...

Would a fraudster setting up a GoFundMe page for his funeral expenses do?
Forum: Lounge 2020-10-22, 12:45
Replies: 1,311
Views: 71,195
Posted By Dr Sardonicus
<snip>[/QUOTE]Perhaps he hasn't tried fermented...

<snip>[/QUOTE]Perhaps he hasn't tried fermented Greenland shark, Kæster Hákarl (https://allthatsinteresting.com/hakarl)

This delicacy was brought to my attention by a cook book I received as a...
Forum: Puzzles 2020-10-22, 11:37
Replies: 6
Views: 172
Posted By Dr Sardonicus
Yes, substituting x for 7! does make things much...

Yes, substituting x for 7! does make things much easier to handle. The obvious regrouping of the first part of the expression gives
...
Forum: jwaltos 2020-10-22, 11:15
Replies: 2
Views: 62
Posted By Dr Sardonicus
According to the Mathematics Genealogy Project...

According to the Mathematics Genealogy Project (https://www.genealogy.math.ndsu.nodak.edu/id.php?id=69767), André Néron got his Ph.D. in 1952, and the title of his thesis is Problèmes arithmétique et...
Forum: Soap Box 2020-10-22, 00:09
Replies: 1,339
Views: 57,579
Posted By Dr Sardonicus
I will consider myself fortunate if this doesn't...

I will consider myself fortunate if this doesn't give me a fatal case of the dry heaves.[/QUOTE]Trump rape accuser 'stunned' at DOJ no-show at court hearing...
Forum: Soap Box 2020-10-21, 13:40
Replies: 338
Views: 19,644
Posted By Dr Sardonicus
[/QUOTE]Reminds me of an SF story, Something in...

[/QUOTE]Reminds me of an SF story, Something in the City (Novelette, author Colin Kapp, got the cover illustration of the November 1984 ANALOG).
Forum: Lounge 2020-10-21, 12:26
Replies: 72
Views: 1,732
Posted By Dr Sardonicus
Avocados can be poisonous to horses. Nasty stuff....

Avocados can be poisonous to horses. Nasty stuff.

https://ker.com/equinews/avocados-can-toxic-horses/[/QUOTE]Based on the xkcd "What if?..." A mole of moles (https://what-if.xkcd.com/4/), we have...
Forum: Lounge 2020-10-20, 14:30
Replies: 72
Views: 1,732
Posted By Dr Sardonicus
The (approximate) molecular weight of the...

The (approximate) molecular weight of the asphyxiant CO is 12 + 16 = 28, which is the same as the 14 + 14 of N2, which is by far the largest component of air. (The next-largest is oxygen, with a...
Forum: Lounge 2020-10-19, 23:27
Replies: 1,124
Views: 53,147
Posted By Dr Sardonicus
Speaking of ready-made scapegoats...

From a Monday call to campaign staff -- knowing members of the press were on the line -- as quoted, e.g. here...
Forum: Lounge 2020-10-19, 19:20
Replies: 127
Views: 10,824
Posted By Dr Sardonicus
Owl boards helicopter fighting California...

Owl boards helicopter fighting California wildfire (https://www.upi.com/Odd_News/2020/10/16/Owl-boards-helicopter-fighting-California-wildfire/9711602880111/)
...
Forum: Lounge 2020-10-19, 19:08
Replies: 1,311
Views: 71,195
Posted By Dr Sardonicus
I have no objection to eating roadkill. I was...

I have no objection to eating roadkill. I was merely pointing out that "road mortality" wasn't all that eco-friendly.

There is one caveat, at least here in the US. Some states require that, if...
Forum: Lounge 2020-10-19, 14:16
Replies: 1,311
Views: 71,195
Posted By Dr Sardonicus
I wouldn't be so sure of that. According to,...

I wouldn't be so sure of that. According to, e.g. the 2004 article about how roads affect the ecology, The Ecology of Roadkill (https://www.discovermagazine.com/environment/the-ecology-of-roadkill)...
Forum: Lounge 2020-10-19, 11:36
Replies: 1,124
Views: 53,147
Posted By Dr Sardonicus
I don't see why. The folks here seem to have...

I don't see why. The folks here seem to have zeroed in on the fact that the Great Barrington Declaration "proposes" a facile phrase -- "focused protection" -- without any real idea of how to carry...
Forum: Lounge 2020-10-19, 01:31
Replies: 1,124
Views: 53,147
Posted By Dr Sardonicus
The Great Barrington Declaration...

The Great Barrington Declaration (https://gbdeclaration.org/)
Forum: Lounge 2020-10-18, 20:53
Replies: 4,087
Views: 252,518
Posted By Dr Sardonicus
Also see last link in this post...

Also see last link in this post (https://www.mersenneforum.org/showpost.php?p=560081&postcount=2825) in Science & Technology, Official "Science News" Thread
Forum: Lounge 2020-10-17, 22:53
Replies: 4,087
Views: 252,518
Posted By Dr Sardonicus
The plight of Nelson the Norfolk Terrier reminded...

The plight of Nelson the Norfolk Terrier reminded me of a song I heard many years ago. I was prompted to look it up.

The rendition (on YouTube) I'd Like to be a Cowgirl...
Forum: Lounge 2020-10-17, 21:55
Replies: 441
Views: 17,452
Posted By Dr Sardonicus
You guess correctly. Go to the head of the...

You guess correctly. Go to the head of the class!

Your offering 3,560,600,696,674 has AFAIK defied analysis so far (I haven't figured out why it is special), so you're current.
Forum: Lounge 2020-10-17, 13:55
Replies: 441
Views: 17,452
Posted By Dr Sardonicus
Nice try. Alas, the stated fact doesn't make 37...

Nice try. Alas, the stated fact doesn't make 37 "special." Every prime p other than 2 or 5 divides some repunit. "Largest prime factor of smallest composite decimal repdigit" is rather contrived. ...
Forum: Number Theory Discussion Group 2020-10-17, 13:37
Replies: 3
Views: 124
Posted By Dr Sardonicus
The overall result about the computation has...

The overall result about the computation has already been posted. It's comparable to a gcd computation.

The following pertains to the specific case at hand.

Apart from the individual factors,...
Forum: Puzzles 2020-10-16, 19:24
Replies: 32
Views: 660
Posted By Dr Sardonicus
So you did, and so I did. :blush: Hmm. The...

So you did, and so I did. :blush:

Hmm. The question of what starting values give bounded sequences is more interesting than I thought!
Showing results 1 to 25 of 1000

 
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