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[info]freeskiers
While some of us long to escape the cold, dark stretch of winter for hot tropical beaches, for others, there's nothing quite like whoooooshing down those shimmering sugar alps. If you're fond of freestyle skiing, get ready to slide down the slippery slopes in good company. This passionate, international community shares travel/gear tips, anecdotes, photos, and videos for those who can't get enough of the sweet stuff.

[info]seasonal_icons
Need some extra twinkle to decorate your place? Check out these dazzling holiday-themed icons. If you're an artist, you can post your own creations, provided you abide by the simple rules (which is to say, all cheer and no politicking). Be sure to comment and give credit if you wish to borrow a little spirit (no direct links, please). If you're feeling a touch of humbug this season, this is an instant shot of festivity.

12/08/09 Homepage Spotlight

Posted by [info]ljspotlight in [info]lj_spotlight on 2009.12.07 at 09:43
[info]handmade_gifts
High on creativity, but low on cash? You'll find tons of brilliant suggestions for do-it-yourself crafts sure to please everyone on your holiday gift list. Offering detailed instructions, photos, budgets, timelines, and active support, you'll soon turn spare remnants of fabric and time into cherished keepsakes. Be sure to search entries and read user guidelines before you post for help!

New Video Game Releases this Week

Posted by [info]acefrehley in [info]gamers on 2009.12.07 at 09:41
12/7/2009

Safecracker: The Ultimate Puzzle Adventure (DS) [Google It]
The Legend of Zelda: Spirit Tracks (DS) [Google It]
Wii Nerf Switch Shot with Red Reveal (Wii) [Google It]
Yoga (Wii) [Google It]

12/8/2009

Avatar (PSP) [Google It]
Bookworm (DS) [Google It]
Chronicles of Mystery: The Tree of Life (PC) [Google It]
Dirt 2 (PC) [Google It]
Puzzler World (DS) [Google It]
SIlent Hll: Shattered Memories (Wii) [Google It]
Salon Superstar (DS) [Google It]
The Saboteur (360, PS3, PC) [Google It]

Nintendo DSiWare

Rayman (800 Points)
Ball Fighter (500 Points)
Pop Island (500 Points)
ARMY DEFENDER (200 Points)
myNotebook: Red™ (200 Points)

WiiWare™

My Dolphin (500 Points)
MAGNETIS™ (500 Points)
Stop Stress: A Day of Fury (800 Points)
Flowerworks® (1000 Points)

Virtual Console

Street Fighter Alpha 2 (800 Points)
Shinobi™ (800 Points)

XBOX: Qix ++ will be available this Wednesday on Xbox LIVE Arcade for 800 points.



Passwd

Posted by [info]bakachanaileen in [info]girlgeeks on 2009.12.06 at 12:56
I recently found out I've got a friend who created an old university password out of left-hand only keys so as not to have to remove the right hand from the mouse.... That's a lazy geek!

Now, a good password should be memorable and hard to crack. We, being the geeky gals that we are, probably have all sorts of clever tricks and references to help us remember our complex passwords. A favorite phone number in hex? Shakespeare quotes in l33tsp34k? I'm sure it's all been done.

So, who here thinks UUDDLRLRbaS would be a good password? And who could forget the "it's Klingon/future Chinese/Ewok for friend" classics? Let's have at it, girls! What were some of your geeky passwords of yore?

Disclaimer: This should go without saying, but don't post any passwords you're still using! Common sense and basic internet aptitude demand you change your password regularly and that it be a secret.

NES clone with working light zapper?

Posted by [info]annnerdley in [info]gamers on 2009.12.05 at 23:27
So I'm jonesing to play some old school NES cartridgey goodness but my NES died a couple of weeks ago. I've google-fu'd and can't seem to find an NES clone with a light zapper that works with a flat screen tv. Has anyone heard of a clone that has an hdtv lcd/flatscreen compat zapper?

Oh, and Ebay and Craig's list aren't and option. I'd love another NES but I've had so many die over the years and better conditioned systems seem to be going for collector's prices.

Riesz representation theorem example

Posted by [info]futurebird in [info]mathematics on 2009.12.05 at 10:44
My current understanding of the Riesz representation theorem is that it is useful since it tells you what all bounded linear functionals on Lp look like. They look like the integral of fg where g is some function in Lq. So, I was trying to think of an example of a bounded linear functional on an Lp space (1 <= p < infinity) that didn't look like the integral of fg where g is some function in Lq, and then find it's "riesz representation" --

I had a hard time thinking of a bounded linear functional, mostly because I'm still unsteady about the concept of "bounded" in this context. But I'm pretty sure that for f(x) in L2, T(f(x)) = f(1) would be a bounded linear functional on L2. T(af(x)+bh(x)) = af(1)+bh(1)= T(af(x)) +T(bh(x)), so it is linear. Now is it bounded? That is where I'm stuck.

||T|| = sup |f(1)|/||f||2

I don't know what to make of the numerator. It's smaller than the denominator? So ||T|| <= 1 and it is bounded (?) That means there must be a function g in L2 (I choose L2 since conjugate indicies are confusing otherwise) with T(f(x)) = integral [fg]. OK. What is g? That is where I'm stuck again.

I just want to see this theory "in action" or maybe I have misunderstood its purpose.

DS Games for sale!

Posted by [info]kelliemonster in [info]nintendo_ds on 2009.12.03 at 23:47
Hello all!

I've got some auctions up on eBay for nine DS games and a couple pieces of video game merchandise. Click for Mario, Professor Layton, Phoenix Wright, and more! )

Posted by [info]bucketofpuke in [info]gamers on 2009.12.03 at 23:05
Is anyone else taking Demon's Souls way too personally? Like, "Okay I've seriously died about fifteen times in an hour, I'm going to fuck you with a rake when I finally make it?"

PS: Don't get this game if you're a controller tosser.

Stupid chemistry jokes

Posted by [info]justphoenix in [info]girlgeeks on 2009.12.03 at 20:40
Current Mood: amused
I have a Biochemistry final next week, and today I was planning to study enzyme kinetics. So I changed my FB status to:

-is spending the evening with two guys-Michaelis and Menten :/

to which my husband responded:

-They'd better not be giving you k1[S][ES]!!!

ETA: I just learned Menten was actually a woman. That's what I get for not reading the textbook :)

[Xe/LaTeX] Text to EPS?

Posted by [info]llyrfish in [info]mathematics on 2009.12.02 at 23:06
So for reasons that would take too long to explain, I'd like to make a bunch of single words into eps files. I found a pretty decent way to do this with LaTeXiT for the Mac, which will even let me do XeTeX so I can use the font I want. However, it seems like this is the kind of thing there is probably a pre-existing macro or package for, somewhere. It would really be cute if I could wrap some text in a command and get Xe/LaTeX to think it's an eps, so I could do something like \includegraphics{\MagicEpsThing{some text}}. Does this exist? Thanks in advance!

Mapping Reals

Posted by [info]spl in [info]mathematics on 2009.12.02 at 22:22
I need a function that maps the real numbers to pairs of real numbers (one to one mapping):

R-> R*R

The cardinality of the sets is the same (according to wikipedia), so such a mapping should exist. Does anyone know a way to do this mapping?


EDIT: I'm looking for one-to-one AND onto
EDIT: Hah, found the right terminology: I'm looking for a "Bijection"

Numerical Analysis

Posted by [info]swanginbajingo in [info]mathematics on 2009.12.02 at 19:19
Tags:
Can anyone point me to a more rigorous NA textbook (that covers all the essentials: interpolation, forward/backwards/central differences, finite differences, solutions to linear/nonlinear systems, approximation theory, etc.)?

I currently have Burden's, but its exercises are horribly basic and mostly involve using the algorithm provided. I'm kind of wanting things involving more proofs, showing where problems can occur (like in stability, computational time, etc.), you know, more "interesting" things.

And of course something that actually proves the various theorems/postulates in it (or at least what it can). Just something more rigorous and complete.

It can be aimed at either undergrads or grads, I'm not too picky on difficulty.

MogileFS Maintenance

Posted by [info]mhwest in [info]lj_maintenance on 2009.12.02 at 12:18
Current Location: Jumping out of a perfectly good plane
Current Mood: dirty
Current Music: Bad Religion - Stranger Than Fiction
Tags: , ,
**EDIT Thu Dec 3 23:24:15 UTC 2009 **

Hey Everyone, we are about to run the last alter job that we need to on our database servers. This will effect userpics / scrapbook / vgift images for the next few hours. Have no fear, your images aren't lost, there is just a really intensive process running on the servers which store the information for mogilefs. Thank you for your understanding and all the LJ love...

Hey LJers,

I just wanted to let you all know that we are going to be performing some mogilefs maintenance over the next few days. We will be upgrading our current version to latest stable as well as changing some db config information to better handle the amount of files we are currently hosting. This shouldn't cause a big impact on site stability, but you may see some minor delays with userpic / scrapbook images appearing or other requests associated with our mogilefs. We would love to not have that happen, but unfortunately with some of the steps we need to take we have to cause a delay with images. I figured this was a better solution than taking down all of LiveJournal because well lets face it, we all need our daily LJ fix ;)

Thanks,

Gaming questionnaire

Posted by [info]casperkupo_x in [info]gamers on 2009.12.02 at 20:08
Current Location: Couch
Current Mood: curious
Current Music: Akira Yamaoka - You're Not Here
Hey everybody. I'm conducting research about gaming genres and how graphics effect the experiences of games, and I have created this questionnaire to gather some answers.
Please fill the questionnaire in with at least some detail, it will help me immensly with my research :)

The questionnaire is behind this cut, thanks in advance :)

To the questionnaire! )




Thank you for filling this questionnaire in.


NEW SUPER MARIOS BROS. WII!!!!

Posted by [info]checker_spot in [info]gamers on 2009.12.02 at 13:42
Cut for pictures )Read more... )</span>

analysis

Posted by [info]sans_galois in [info]mathematics on 2009.12.02 at 14:41
Hello all,

I'm trying to show that H^1([0,1]) is a proper, dense subset of L^2([0,1]).

First of all, I want to find some L^2 function that is not in H^1, but I really don't know many L^2 functions off the top of my head, and finding one not in H^1 has proved even more challenging.

And I genuinely have no idea how to show H^1 is dense in L^2. I mean, I know that if I can show the orthogonal complement of H^1 is {0}, then that'll do it.....but I need some help getting started.


Thanks!

Guest lecture

Posted by [info]futurebird in [info]mathematics on 2009.12.02 at 08:55
I went to a guest lecture the other day and I was very pleased that I was able to follow... oh... almost half of it! At any rate, he was talking about (among other things) how to select a random matrix with determinant 1. (so a random member of SL(N, Z))

He said there were two ways of doing this.

1. "the number theory way" picking it "out of a hat"

2. using a generating set and random walks on a graph (where did the graph come from??) to make "words" with the generating set and then these words are going to form a random matrix.

I could not understand the 2nd way-- has anyone heard of this? Why was he using a graph? making a random graph and choosing a "random walk" seems like making one problem in to another for no real reason and the whole process was lost on me. Anyone know what this is about?

Posted by [info]cherry_virus in [info]gamers on 2009.12.02 at 00:38
anyone can suggest me good horror/survival horror kind of games
excluding silent hill, and re
for psx/ps2 or pc
thanks 8D

12/01/09 Homepage Spotlight

Posted by [info]ljspotlight in [info]lj_spotlight on 2009.12.01 at 12:23
[info]backpacking
Want to embrace your wanderlust on the cheap? If you're high on adventurous spirit, but low on funds, this community can help you plan a trip to anywhere. Offering plentiful tips on how to travel light, you can post about inexpensive hotels and youth hostels if you're into urban exploration or discuss camping gear and mosquito netting for the great outdoors. Hitch your backpack, pitch your tent, and carpe diem!

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