## Search found 8 matches

Mon Jul 09, 2012 11:08 pm UTC
Forum: Logic Puzzles
Topic: Ten Pin Bowling Score
Replies: 9
Views: 5459

### Re: Ten Pin Bowling Score

I'ma necro this thread, because someone is WRONG on the Internet. Can't have that, right? We know a is 5, so we fill that in. e+f is 5, but we cannot gain any more information about that. The score: (25) + (15+b) + (5+b) + (19) + (20) + (30) + (20+...
Thu Jun 07, 2012 5:11 am UTC
Forum: Mathematics
Topic: Hahn Series not a Field
Replies: 5
Views: 2202

### Re: Hahn Series not a Field

If a non-trivial statement is the basis for your argument, you absolutely need to prove it. You seem to think the proof is trivial by transfinite induction, but I can't make the limit case work. Perhaps you have an argument that you would like to share? In any case, you have other issues. Assuming t...
Tue Jun 05, 2012 11:47 pm UTC
Forum: Mathematics
Topic: Hahn Series not a Field
Replies: 5
Views: 2202

### Re: Hahn Series not a Field

Your argument seems to rely on the claim that
$\sum_0^{\sigma}{t^k} = \frac{1-t^{\sigma + 1}}{1-t}.$
Can you prove that this is true, even if [imath]\sigma[/imath] is not a finite value? Better yet, what value group are you using, and to what value in that group does an infinite [imath]\sigma[/imath] correspond?
Sun Apr 22, 2012 1:44 am UTC
Forum: Mathematics
Topic: Looking for a graph algorithm
Replies: 11
Views: 3964

### Re: Looking for a graph algorithm

When you say "From each node, we can place one outgoing edge," do you mean that each node must have an outgoing edge? If so, then any solution you create will necessarily have a cycle. Even if it's not mandatory, I can't see how adding an outgoing edge to a vertex that doesn't have one wo...
Sat Apr 21, 2012 4:06 am UTC
Forum: Mathematics
Topic: Looking for a graph algorithm
Replies: 11
Views: 3964

### Re: Looking for a graph algorithm

When you say "From each node, we can place one outgoing edge," do you mean that each node must have an outgoing edge? If so, then any solution you create will necessarily have a cycle. Even if it's not mandatory, I can't see how adding an outgoing edge to a vertex that doesn't have one wou...
Sun Mar 11, 2012 1:37 am UTC
Forum: Coding
Topic: Where are XP password hashes stored?
Replies: 4
Views: 7958

### Re: Where are XP password hashes stored?

Why do you want this?
Sun Feb 19, 2012 6:15 am UTC
Forum: Mathematics
Topic: Distance between two points on/in an ellipse
Replies: 6
Views: 3775

### Re: Distance between two points on/in an ellipse

Do you know how to do implicit differentiation? It might help you here.
Fri Feb 10, 2012 6:14 am UTC
Forum: Computer Science
Topic: What to do?
Replies: 21
Views: 4485

### Re: What to do?

I want to clarify something. You're claiming you have an algorithm that

- takes, as input, a set [imath]S[/imath] containing [imath]n[/imath] integers,
- returns a list of all the subsets of [imath]S[/imath] that sum to 0, and
- finishes in time that is polynomial in [imath]n[/imath] for all [imath]S[/imath].

Is this a correct characterization?