Brain Teasers

[sSsflamesSs]

Originally posted by loseyourname You know, there's actually an eyeball up above the other faces on the left side of the sky as well.

Hahahahahah

[PASAMONSTER]

Find an (efficient) algorithm, which given a set of vectors in Rn spanning a lattice, finds a minimal (in size) set of vectors that span the same lattice.

[anileve]

Puzzle for Advanced Mathematicians.

Let A be a finite set of real numbers. Show that there exists a non-zero integer n, such that each member of n. A has an integer within distance < 0.0001 from it.

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Look I can copy and paste to show off as well, and I also don't know the answer to this one. What happens if someone asks me for a confirmation of the answer they got? Well I'll just say they are right, regardless of the accuracy

[ckBejug]

Originally posted by anileve Puzzle for Advanced Mathematicians.

Let A be a finite set of real numbers. Show that there exists a non-zero integer n, such that each member of n. A has an integer within distance < 0.0001 from it.

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Look I can copy and paste to show off as well, and I also don't know the answer to this one. What happens if someone asks me for a confirmation of the answer they got? Well I'll just say they are right, regardless of the accuracy

Math sucks. That question felt like homework. Bleh.

[Arvestaked]

Originally posted by anileve Puzzle for Advanced Mathematicians.

Let A be a finite set of real numbers. Show that there exists a non-zero integer n, such that each member of n. A has an integer within distance < 0.0001 from it.

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Look I can copy and paste to show off as well, and I also don't know the answer to this one. What happens if someone asks me for a confirmation of the answer they got? Well I'll just say they are right, regardless of the accuracy

If I were to take a shot, I would say:

1/(nA10^5)

[Sip]

Originally posted by PASAMONSTER Find an (efficient) algorithm, which given a set of vectors in Rn spanning a lattice, finds a minimal (in size) set of vectors that span the same lattice.

What is meant by spanning a lattice? Are you basically looking for some sort of LLL variation?

[anileve]

Originally posted by Arvestaked If I were to take a shot, I would say:

1/(nA10^5)

Done! Sounds good enough to me.

[anileve]

Originally posted by Seapahn What is meant by spanning a lattice? Are you basically looking for some sort of LLL variation?

Smart ass.

[Sip]

Originally posted by anileve Done! Sounds good enough to me.

I don't get it That's a tough problem!

[anileve]

Originally posted by Seapahn I don't get it

Neither do I and neither does Pasamonster, so it sounds good enough to me. If you take a guess I would approve of that answer as well. If you are not clear on what I mean, please scroll above and read my post once again carefully.