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Search took 0.12 seconds. Search: Posts Made By: Mr. P-1
Forum: Science & Technology 2013-12-05, 14:04
Replies: 68
Views: 12,992
Posted By Mr. P-1
What is a self crossing loop? If you mean a...

What is a self crossing loop? If you mean a trajectory which returns the particle to the same place, you would need to define "same place".
Forum: Lounge 2013-10-31, 00:44
Replies: 29
Views: 4,081
Posted By Mr. P-1
In case it wasn't clear. I meant to run P+1 on...

In case it wasn't clear. I meant to run P+1 on the composite factor found by P-1, (which would take miliseconds) not on the unfactored Mersenne number, (which would still work, but would take...
Forum: Lounge 2013-10-30, 13:05
Replies: 29
Views: 4,081
Posted By Mr. P-1
It can find composite factors, but it is trivial...

It can find composite factors, but it is trivial to split them. A slick way to do so is using the P+1 algorithm to the same limits, which has a 50% chance of success per run.

My personal best is...
Forum: Lounge 2013-10-25, 01:54
Replies: 39
Views: 4,472
Posted By Mr. P-1
Are you talking to me?

Are you talking to me?
Forum: Lounge 2013-10-24, 14:22
Replies: 39
Views: 4,472
Posted By Mr. P-1
Is it safe?

Is it safe?
Forum: Miscellaneous Math 2013-10-23, 11:02
Replies: 64
Views: 6,120
Posted By Mr. P-1
Not when Pai Mai is sitting opposite.

Not when Pai Mai is sitting opposite.
Forum: Puzzles 2013-10-22, 00:00
Replies: 36
Views: 5,019
Posted By Mr. P-1
Actually it is we, not the participants, who...

Actually it is we, not the participants, who cannot conclude with world-state the participants are in. If the participants are in any of the solvable world-states as you have defined them, then it...
Forum: Puzzles 2013-10-21, 23:46
Replies: 36
Views: 5,019
Posted By Mr. P-1
The problem is that C is a false premise. A...

The problem is that C is a false premise. A valid argument from false premises is unsound, and may lead to false conclusions.
Forum: Puzzles 2013-10-20, 15:19
Replies: 36
Views: 5,019
Posted By Mr. P-1
On the seat of the pants of the four people who...

On the seat of the pants of the four people who have been told their own colour.



Nobody can see the back of their own pants, or the pants of anyone before the other person has got up to go to...
Forum: Puzzles 2013-10-20, 08:13
Replies: 36
Views: 5,019
Posted By Mr. P-1
To take this to it's logical conclusion: The...

To take this to it's logical conclusion: The professor draws a dot on both heads, and asks them to determine whether the two dots are the same colour or a different colour, and says that this...
Forum: Puzzles 2013-10-20, 08:05
Replies: 36
Views: 5,019
Posted By Mr. P-1
"... told four of you the colour I was going to...

"... told four of you the colour I was going to give them in a private conversation this morning, and sewed clues for the rest of you on the seat of their pants."
Forum: Puzzles 2013-10-20, 08:03
Replies: 36
Views: 5,019
Posted By Mr. P-1
I have proven it unsolvable: It...

I have proven it unsolvable:





It is you with the circular argument. The problem as stated is unsolvable because there are multiple (in fact infinite) possibilities consistent with the...
Forum: Puzzles 2013-10-19, 23:05
Replies: 36
Views: 5,019
Posted By Mr. P-1
Consider the "problem" defined by the following: ...

Consider the "problem" defined by the following:

1. Johnny's shirt is green.
2. This problem is solvable.
3. What colour is Sarah's skirt?

Would any one seriously argue that the correct...
Forum: Puzzles 2013-10-19, 23:00
Replies: 36
Views: 5,019
Posted By Mr. P-1
You don't understand how the entire statement...

You don't understand how the entire statement "<premise> therefore <conclusion>" could be true? Or you don't understand how the premise which is itself an if ... then statement is true.



This...
Forum: Puzzles 2013-10-19, 22:03
Replies: 36
Views: 5,019
Posted By Mr. P-1
I'm afraid I have to disagree with you. I just...

I'm afraid I have to disagree with you. I just wanted to confirm that this solution was the one you were expecting.

The problem is that "If my colour is different from any other I can see, then...
Forum: Puzzles 2013-10-19, 21:21
Replies: 36
Views: 5,019
Posted By Mr. P-1
Assume that nobody sees any marker that isn't...

Assume that nobody sees any marker that isn't used on someone else, i.e., that the set of coloured dots on every other participant's forehead is the totality of colour information that any...
Forum: Puzzles 2013-10-19, 20:43
Replies: 36
Views: 5,019
Posted By Mr. P-1
It doesn't. I considered it carefully and cannot...

It doesn't. I considered it carefully and cannot see how it helps.

There are two logic problems here: The one posted to the 31 logicians, and the one posed to us. The statement that the problem...
Forum: Puzzles 2013-10-19, 19:28
Replies: 36
Views: 5,019
Posted By Mr. P-1
With this stipulation, each of the participants...

With this stipulation, each of the participants can solve the xkcd problem simultaneously for each dot colour. At the first bell, those with a unique dot colour (four in total) leave the table. ...
Forum: Puzzles 2013-10-19, 18:54
Replies: 36
Views: 5,019
Posted By Mr. P-1
I do not believe the problem is solvable as...

I do not believe the problem is solvable as written. Perhaps there is some additional information available to the particpants lost in the translation - perhaps that every marker was used at least...
Forum: Science & Technology 2013-10-11, 23:11
Replies: 68
Views: 12,992
Posted By Mr. P-1
The traditional twin paradox is easily resolved...

The traditional twin paradox is easily resolved by noting that there is no single inertial frame of reference with respect to which which the travelling twin is stationary throughout his journey. In...
Forum: Miscellaneous Math 2013-10-07, 13:37
Replies: 16
Views: 1,894
Posted By Mr. P-1
As has already been remarked, the weak version of...

As has already been remarked, the weak version of the "conjecture" is more clearly stated as asserting that for every Mersenne prime Mp there is a Mersenne prime Mq satisfying p#|Mq-1.

Observation...
Forum: Information & Answers 2013-10-07, 12:40
Replies: 3
Views: 1,283
Posted By Mr. P-1
This error usually goes away by itself. Don't...

This error usually goes away by itself. Don't worry about it, unless if persists for more than a day or so.
Forum: Factoring 2013-10-03, 07:53
Replies: 102
Views: 16,068
Posted By Mr. P-1
:explode:

:explode:
Forum: Factoring 2013-10-01, 16:03
Replies: 102
Views: 16,068
Posted By Mr. P-1
This is not a good deal. Guy will be $40 better...

This is not a good deal. Guy will be $40 better off, not $20, if a factor is found. So he's only offering 25% of what the factor is worth to him, to the person who actually does the work.
Forum: Information & Answers 2013-06-21, 12:02
Replies: 17
Views: 3,545
Posted By Mr. P-1
Actually it is the other way around. If we find...

Actually it is the other way around. If we find a factor (it doesn't matter whether or not it is the smallest), then the number is composite.

If we don't find a factor, then we need to use...
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