Forum: Miscellaneous Math
2022-06-21, 18:58
|
|
Replies: 23
Views: 452
|
|
Forum: FactorDB
2022-06-16, 18:59
|
|
Replies: 561
Views: 105,265
Unless your From: header was itself an invalid...
Unless your From: header was itself an invalid address.
A technique quite often used by spammers.[/QUOTE]That would make attributing not having gotten a response to the recipient's address not...
|
|
Forum: FactorDB
2022-06-15, 18:46
|
|
Replies: 561
Views: 105,265
|
|
Forum: storm5510
2022-06-14, 03:21
|
|
Replies: 29
Views: 641
|
|
Forum: storm5510
2022-06-13, 20:12
|
|
Replies: 29
Views: 641
No. Burning a gallom of ethanol produces less...
No. Burning a gallom of ethanol produces less energy than burning a gallon of gasoline. Only about 2/3 the energy IIRC. So the more ethanol in the mixture, the lower your mileage will be.
The...
|
|
Forum: Soap Box
2022-06-12, 13:52
|
|
Replies: 37
Views: 1,107
|
|
Forum: storm5510
2022-06-12, 13:19
|
|
Replies: 29
Views: 641
One factor affecting the price of gas or diesel...
One factor affecting the price of gas or diesel is the price of crude oil. During the OPEC-Russia oil price war of 2020 (which was also during the COVID pandemic), Brent crude dropped below $20 per...
|
|
Forum: Homework Help
2022-06-10, 14:07
|
|
Replies: 24
Views: 1,104
|
|
Forum: Factoring
2022-06-10, 13:45
|
|
Replies: 61
Views: 4,299
|
|
Forum: Lounge
2022-06-10, 12:19
|
|
Replies: 379
Views: 46,867
June 10
(See this post...
June 10
(See this post (https://www.mersenneforum.org/showpost.php?p=598495&postcount=330) and the discussion which ensued in subsequent posts for more on the first two items.)
1942 Destruction...
|
|
Forum: Miscellaneous Math
2022-06-10, 11:55
|
|
Replies: 8
Views: 428
The following may be pertinent:
Jon...
The following may be pertinent:
Jon Grantham, There are infinitely many Perrin pseudoprimes, J. Number Theory 130 (2010) 1117-1128
[$]\text{Theorem 1.1. Let }f (x)\;\in\;\mathbb{Z}[x]\text{ be...
|
|
Forum: Lounge
2022-06-09, 13:12
|
|
Replies: 379
Views: 46,867
June 9
68 AD Roman Emperor Nero (15 Dec 37 -...
June 9
68 AD Roman Emperor Nero (15 Dec 37 - 09 June 68), Lucius Domitius Ahenobarbus before becoming Emperor, then Nero Claudius Caesar Augustus Germanicus, "commits suicide" at age 30 after the...
|
|
Forum: Number Theory Discussion Group
2022-06-08, 16:10
|
|
Replies: 18
Views: 1,808
|
|
Forum: Other Mathematical Topics
2022-06-07, 23:49
|
|
Replies: 1
Views: 646
I agree, Quanta booted the title. A more...
I agree, Quanta booted the title. A more accurate title appears to be A proof of the Erdős primitive set conjecture (https://arxiv.org/abs/2202.02384) (Arxiv preprint).
I found a description of...
|
|
Forum: Lounge
2022-06-07, 12:33
|
|
Replies: 432
Views: 73,114
Then, I hung up and thought: "Are you even...
Then, I hung up and thought: "Are you even trying?"
I now wish I would have listened longer to see what other wisdom they had.[/QUOTE]Apparently they don't have to try very hard. The thought...
|
|
Forum: Lounge
2022-06-06, 13:01
|
|
Replies: 379
Views: 46,867
June 6
1939 The ship MS St. Louis, carrying...
June 6
1939 The ship MS St. Louis, carrying 907 Jewish refugees from Europe, begins sailing back to the continent after it was refused entry into America. Approximately a quarter of those on board...
|
|
Forum: Number Theory Discussion Group
2022-06-06, 12:38
|
|
Replies: 18
Views: 1,808
Let g = gcd(d, f).If g > 1 and any prime-power...
Let g = gcd(d, f).If g > 1 and any prime-power factor of g is congruent to 3 (mod 4) there is no solution.
If g = 1, f is divisible by 4 and d == 3 (mod 4) there is no solution.
If g = 1, f is...
|
|
Forum: Soap Box
2022-06-04, 12:40
|
|
Replies: 972
Views: 92,446
US Rep. Mo Brooks (R-AL) has another theory of...
US Rep. Mo Brooks (R-AL) has another theory of what causes mass shootings: Single mothers. And a "decline in moral values."
Given the fact that his party has become a personality cult, embracing...
|
|
Forum: Soap Box
2022-06-04, 03:34
|
|
Replies: 972
Views: 92,446
|
|
Forum: Soap Box
2022-06-03, 12:03
|
|
Replies: 972
Views: 92,446
US Rep. Billy Long (R-MO) is blaming mass...
US Rep. Billy Long (R-MO) is blaming mass shootings on abortion. He says, “When I was growing up in Springfield, you had one or two murders a year. Now we have two, three, four a week in...
|
|
Forum: Lounge
2022-06-02, 12:48
|
|
Replies: 15
Views: 549
I have gotten rid of many unwanted woody plants...
I have gotten rid of many unwanted woody plants (small trees, etc) by cutting them down to short stumps, applying concentrated brush killer to the stump, and then covering the poisoned stump with a...
|
|
Forum: Soap Box
2022-06-02, 12:09
|
|
Replies: 972
Views: 92,446
|
|
Forum: Lounge
2022-06-02, 04:49
|
|
Replies: 42
Views: 3,526
In my experience, the yellow-orange Oleander...
In my experience, the yellow-orange Oleander Aphid (Aphis nerii) is the one that attacks Common Milkweed (Asclepias syriaca).
From Bugguide, Aphis nerii (https://bugguide.net/node/view/6167) -...
|
|
Forum: Lounge
2022-06-01, 12:49
|
|
Replies: 42
Views: 3,526
My Columbines and Irises are nearly done. Some...
My Columbines and Irises are nearly done. Some of my volunteer Picatee Cosmos and trailing Petunias are blooming. My Penstemons are open. My Common Milkweed (Asclepias syriaca) and Butterfly Weed...
|
|
Forum: Lounge
2022-06-01, 11:11
|
|
Replies: 4,466
Views: 421,385
|
