## Search found 8 matches

Wed Mar 02, 2011 9:35 am UTC
Forum: Mathematics
Topic: Math Question (maybe induction)
Replies: 9
Views: 1071

### Re: Math Question (maybe induction)

Wed Mar 02, 2011 7:35 am UTC
Forum: Mathematics
Topic: Math Question (maybe induction)
Replies: 9
Views: 1071

### Re: Math Question (maybe induction)

What you've done looks horrible. It doesn't look so bad, I don't think there's a problem with what I did. Oh, well, I edited it. Just treat a^n - b^n like a polynomial. Is there another polynomial, g(a,b) such that (a-b) g(a,b) = a^n-b^n ? Is a question or a guidance? How would it h...
Wed Mar 02, 2011 7:01 am UTC
Forum: Mathematics
Topic: Math Question (maybe induction)
Replies: 9
Views: 1071

### Math Question (maybe induction)

Is there a way to prove that:
If $\frac{a-b}{k}\inℤ$
then $\frac{a^n-b^n}{k}\inℤ ?$
Preferably by induction, if possible.
Tue Jan 18, 2011 5:15 am UTC
Topic: 0848: "3D"
Replies: 107
Views: 19554

### Re: 0848: "3D"

Diadem wrote:No, no, no, time and space are not of the same kind. Time is not just a dimension, it is a very special one. 3 space and 1 time dimension is entirely different from 4 space dimensions. Or 2 time and 2 space dimensions, for that matter.

Really?
Ignorance is bliss.
Mon Jan 17, 2011 5:08 pm UTC
Topic: 0848: "3D"
Replies: 107
Views: 19554

### Re: 0848: "3D"

Sure, but I think that's pretty well captured in the fact that they're called "movies". As in, they move . Through time. Indeed. It's like saying polygon with depth instead of polyhedron. What you said reminds me of http://xkcd.com/209/ By the way, explaining that 3 dimensional movies are...
Mon Jan 17, 2011 4:43 pm UTC
Forum: Books
Topic: xkcd's favourite 100 books - vote now!
Replies: 226
Views: 183333

### Re: xkcd's favourite 100 books - vote now!

The Hitchhiker's Guide to the Galaxy series (Douglas Adams)
Discworld series (Terry Pratchett)
His Dark Materials series (Philip Pullman)
Mon Jan 17, 2011 4:33 pm UTC
Forum: Language/Linguistics
Topic: עברית! (Hebrew, obviously)
Replies: 92
Views: 27546

### Re: עברית! (Hebrew, obviously)

engr wrote:לכן עברית שלו הייתה טובה מאוד, אולי טובה יותר מעברית שלי

העברית שלו, לא עברית שלו. זה צריך להיות מיודע.
theGoldenCalf; wrote:אני אשמח לעזור לכל מי שרוצה להשחיז את העברית שלו פה - ברינג און דה היברו!

גם אני.
Mon Jan 17, 2011 4:18 pm UTC