Forum: Soap Box
2022-06-30, 03:02
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Replies: 134
Views: 29,586
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Forum: Charles Kusniec
2022-06-28, 03:01
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Replies: 18
Views: 470
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Forum: Soap Box
2022-06-28, 02:50
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Replies: 161
Views: 12,304
I previously commented on overturning Loving v...
I previously commented on overturning Loving v Virginia and Brown v Board of Education in this post (https://www.mersenneforum.org/showpost.php?p=605282&postcount=130).
I also commented on Brown...
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Forum: Charles Kusniec
2022-06-27, 02:46
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Replies: 18
Views: 470
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Forum: Miscellaneous Math
2022-06-27, 02:20
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Replies: 28
Views: 654
If by "mod 17" you mean, "an element of the...
If by "mod 17" you mean, "an element of the residue ring of the integers Z mod 17Z," the terms "real" and "imaginary" are meaningless. I note that, mod 17, 4^2 +1 == 13^2 + 1 == 0 so 4 and 13 are...
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Forum: Miscellaneous Math
2022-06-21, 18:58
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Replies: 28
Views: 654
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Forum: FactorDB
2022-06-16, 18:59
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Replies: 561
Views: 105,535
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...
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Forum: FactorDB
2022-06-15, 18:46
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Replies: 561
Views: 105,535
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Forum: storm5510
2022-06-14, 03:21
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Replies: 29
Views: 662
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Forum: storm5510
2022-06-13, 20:12
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Replies: 29
Views: 662
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...
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Forum: Soap Box
2022-06-12, 13:52
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Replies: 37
Views: 1,167
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Forum: storm5510
2022-06-12, 13:19
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Replies: 29
Views: 662
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 $20 per...
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Forum: Homework Help
2022-06-10, 14:07
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Replies: 24
Views: 1,195
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Forum: Factoring
2022-06-10, 13:45
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Replies: 61
Views: 4,353
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Forum: Lounge
2022-06-10, 12:19
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Replies: 379
Views: 47,097
June 10
(See this post...
June 10
(See this post (https://www.mersenneforum.org/showpost.php?p=598495&postcount=330) and the discussion which ensued in subsequent posts for more on the first two items.)
1942 Destruction...
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Forum: Miscellaneous Math
2022-06-10, 11:55
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Replies: 8
Views: 443
The following may be pertinent:
Jon...
The following may be pertinent:
Jon Grantham, There are infinitely many Perrin pseudoprimes, J. Number Theory 130 (2010) 1117-1128
[$]\text{Theorem 1.1. Let }f (x)\;\in\;\mathbb{Z}[x]\text{ be...
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Forum: Lounge
2022-06-09, 13:12
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Replies: 379
Views: 47,097
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...
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Forum: Number Theory Discussion Group
2022-06-08, 16:10
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Replies: 18
Views: 1,840
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Forum: Other Mathematical Topics
2022-06-07, 23:49
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Replies: 1
Views: 681
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...
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Forum: Lounge
2022-06-07, 12:33
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Replies: 432
Views: 73,230
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...
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Forum: Lounge
2022-06-06, 13:01
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Replies: 379
Views: 47,097
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...
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Forum: Number Theory Discussion Group
2022-06-06, 12:38
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Replies: 18
Views: 1,840
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...
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Forum: Soap Box
2022-06-04, 12:40
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Replies: 972
Views: 92,898
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...
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Forum: Soap Box
2022-06-04, 03:34
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Replies: 972
Views: 92,898
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Forum: Soap Box
2022-06-03, 12:03
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Replies: 972
Views: 92,898
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...
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