Search found 576 matches

Mon Mar 10, 2014 5:14 am UTC
Forum: Mathematics
Topic: [Homework] complex ordinary diff eq's
Replies: 0
Views: 1831

[Homework] complex ordinary diff eq's

I’m a bit rusty on my complex analysis, so I may be missing something obvious. Q: Consider the ODE z’=f(z)=f(x+iy). How do we determine the possible types of equilibria of this system, using the Cauchy-Riemann equations? We can represent the system as a planar system: if [;f(x+iy)=u(x,y)+iv(x,y);], ...
Sat Apr 27, 2013 9:49 pm UTC
Forum: Mathematics
Topic: Module intuition
Replies: 7
Views: 2882

Re: Module intuition

Awesome, thanks for all the help guys!
Tue Apr 23, 2013 4:56 am UTC
Forum: Mathematics
Topic: Module intuition
Replies: 7
Views: 2882

Module intuition

So, in algebra we're covering modules over (commutative) rings, and I feel like I have no real intuition for them. They are defined in a way that generalizes vector spaces over fields, but then when we do stuff with them, we often do things that we do with rings (working with ideals and quotients an...
Mon Jan 28, 2013 12:37 am UTC
Forum: What If?
Topic: What-If 0028: "Steak Drop"
Replies: 82
Views: 59542

Re: What-If 28: Steak Drop

If you're cooking steak so that the middle is not pink or red, you are wasting good steak and should just buy pot roast (as it will taste the same, but pot roast is cheaper). Steak that is grey in the middle has the taste and texture of shoe leather. edit: for more detail, just read this. Meat shoul...
Thu Nov 29, 2012 1:05 am UTC
Topic: 1140: "Calendar of Meaningful Dates"
Replies: 152
Views: 26005

Re: 1140: "Calendar of Meaningful Dates"

'); DROP TABLE users; wrote:This one image probably sums up the cultural impact of 9/11 better than anything else I've seen.

Never forget? I don't think there's much danger of that.

Well, the name of the event is just given by the date, rather than, say, Christmas, or New Years.
Wed Nov 14, 2012 5:25 am UTC
Topic: What the hell is corporate personhood.
Replies: 43
Views: 12451

Re: What the hell is corporate personhood.

The legislature did not define what is meant by people. The legal concept of corporate personhood existed before the constitution. And it doesn't affect the logic that a corporation derives its "rights" from the rights of the people making it up. Let's not forget the government's position ...
Mon Nov 12, 2012 6:01 am UTC
Topic: What the hell is corporate personhood.
Replies: 43
Views: 12451

Re: What the hell is corporate personhood.

A bit late, but here's a video that explains the concept very clearly. If you can't watch it, the point is that corporations have rights because people have certain rights, but maintain those rights when they gather together in a group. A group of people have the right to speech and assembly, and th...
Sun Nov 11, 2012 6:13 pm UTC
Topic: General Economics Stuff
Replies: 118
Views: 44080

Re: General Economics Stuff

Well, depending on what country you live in, it may or may not be possible to greatly increase government revenues fairly easily. If government revenues are themselves 3% of GDP, a debt of 100% of T (total taxes) is easy to eliminate in one year. If T is a majority of GDP, then debt of T becomes muc...
Tue Oct 16, 2012 2:28 am UTC
Topic: What the hell is corporate personhood.
Replies: 43
Views: 12451

Re: What the hell is corporate personhood.

I would like to point out, to head off any debates about what is and is not speech, that the Ninth Amendment makes the issue of "is giving money speech?" totally irrelevant. As a pet peeve, I wish people would stop saying "The Ninth Amendment makes..." It's more descriptive if y...
Mon Oct 15, 2012 6:25 pm UTC
Topic: What the hell is corporate personhood.
Replies: 43
Views: 12451

Re: What the hell is corporate personhood.

I'm pretty sure this is all quasi in rem , where the state has jurisdiction over an individual because it has jurisdiction over the property, but can't actually initiate proceedings against the person because they aren't in the jurisdiction. None of that allows the state to make it criminal for obj...
Fri Oct 12, 2012 12:22 am UTC
Topic: Voting Third Party.
Replies: 103
Views: 23089

Re: Voting Third Party.

The problem is that primaries are not ideal no matter what. If you don't allow open voting, then you can have a candidate that most opposition party members despise, which is the least ideal system if he wins. If you do allow open voting, opposition party members can vote for the least electable. T...
Wed Oct 10, 2012 4:36 pm UTC
Topic: Voting Third Party.
Replies: 103
Views: 23089

Re: Voting Third Party.

I'm not sure if you'd be able to do, say, both Democratic and Republican primaries though. I think you have to choose, like you're temporarily joining that party just for the ability to vote in their primary, or something like that. First time I voted in a primary (2008), I was incensed that I coul...
Tue Oct 09, 2012 7:36 am UTC
Topic: Voting Third Party.
Replies: 103
Views: 23089

Re: Voting Third Party.

One problem though, is the overall dividing up into two major factions. I can't go to a primary in my state for any party but mine...so even if a faction in the opposing camp has some views I really like, I can't support them until they've already won the battle for nomination. So, since I'm regist...
Mon Oct 08, 2012 12:06 am UTC
Topic: Voting Third Party.
Replies: 103
Views: 23089

Re: Voting Third Party.

Gary Johnson never really considered running in the GOP, AFAIK.
Sun Oct 07, 2012 4:40 am UTC
Topic: Voting Third Party.
Replies: 103
Views: 23089

Re: Voting Third Party.

I'm still deciding between Johnson and Romney. I'm not sure if I trust Romney or not. I think he would make a decent president; mostly, Paul Ryan's experience working with Congress is his only real advantage. I don't really trust Romney personally, but I do trust him to do what a typical (Republica...
Sat Oct 06, 2012 4:14 am UTC
Topic: Voting Third Party.
Replies: 103
Views: 23089

Re: Voting Third Party.

I personally plan to vote for Gary Johnson, considering that I trust Neither Obama nor Romney. I'm still deciding between Johnson and Romney. I'm not sure if I trust Romney or not. I think he would make a decent president; mostly, Paul Ryan's experience working with Congress is his only real advant...
Mon Oct 01, 2012 1:42 am UTC
Topic: The Mormon Card
Replies: 104
Views: 19112

Re: The Mormon Card

Clarification: whether mormons are Christian is debatable, since they don't believe in the Trinity. That sort of distinction is only meaningful for particularly theologically-minded Christians, but many Mormons and Christians don't consider them Christian.
Sat Sep 22, 2012 10:57 pm UTC
Forum: Mathematics
Topic: The uses of log10
Replies: 17
Views: 4052

Re: The uses of log10

The Richter scale is also base-10 logarithmic.
Sat Sep 22, 2012 2:59 pm UTC
Topic: The Laffer Curve
Replies: 57
Views: 21346

Re: The Laffer Curve

I don't buy the continuity objection. It seems to me that I can make the change in revenue as small as I want by picking a small enough change in tax rates. A better critique would be to ask what the tax rate on the x-axis refers to. Are we taxing income? Land? Consumption? Different goods have diff...
Sat Sep 15, 2012 4:47 am UTC
Topic: The 99%
Replies: 152
Views: 23030

Re: The 99%

Income equality is a good outcome, but its a terrible goal. For example a completely backward agrarian society is very equal and very resistant to recession So? Hitler Stalin breathed. Hitler Stalin was a bad person. Does that mean you're against breathing? (No, I won't Godwin this thread) That mas...
Wed Sep 12, 2012 12:32 am UTC
Topic: US political culture - How did we get here?
Replies: 65
Views: 14934

Re: US political culture - How did we get here?

It's amazing how everyone's examples of political partisanship manage to come from the right (Fox et. al.) even though there are many more networks that are equally or moreso biased to the left (CNN, MSNBC, and basically everyone but Fox). I think the Republicans are particularly uncompromising, and...
Fri Aug 17, 2012 5:17 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

Yes, alcohol and gambling provided reasons for gang violence outside of drugs. You might notice that these are almost exactly like drugs--nothing inherently wrong with any of them, but banned anyway and ended up becoming the product of choice for violent gangs. So, in fact, you are just giving more...
Tue Aug 14, 2012 4:53 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

You really need to up the reading comprehension here. Yes, I just named the driving forces behind historic gangs. Yes, I'm demonstrating that gang violence predates both guns and drugs. The war on drugs didn't invent gangs, they'd otherwise exist and always have. If it wasn't drugs it would (still)...
Mon Aug 13, 2012 1:08 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

Right, the real problem here is the War on Drugs. The market for drugs exists, but without the government protecting their property, gangs form and arm themselves in order to do what the police will not. No. Just no. Gangs have existed and been fighting over territory long before the War on Drugs -...
Sun Aug 12, 2012 1:56 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

Ah, I see. I thought you were making one point (stray bullets from gang shootings cause a QoL degradation) rather than 2 separate points. Also fair, I suppose. Stray bullets do nobody any favors. I do agree that gangs and gang culture are a QoL problem even if shooting is disregarded, though. Vanda...
Sat Aug 11, 2012 3:52 am UTC
Forum: General
Topic: Changing Olympic events
Replies: 83
Views: 12283

Re: Changing Olympic events

In practice, for fun, we did 2v2 epee one day earlier this year. You essentially had two strips set up next to each other, with 2 sets of boxes and 2 fencers similarly to normal , but when one person got a touch, the opponent on their side was locked out as normal while the other two each had one &q...
Sat Aug 11, 2012 3:42 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

But why the position that guns result in a quality of life degradation for ordinary citizens? We have self-defense (which has certainly saved many people, regardless of the specifics), but also sport shooting/recreation, and hunting. I think he was referring to the gangs rather than the guns. Hence...
Fri Aug 10, 2012 5:13 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

Do ordinary citizens often incur the wrath of violent gangs with lots of people, cars, cash, and automatic weapons? Most gang violence is gang-on-gang... There's a significant amount of stray-bullet deaths and injuries, although I can't find a decent metric comparing that to overall gang-related vi...
Wed Aug 08, 2012 3:40 pm UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

Do ordinary citizens often incur the wrath of violent gangs with lots of people, cars, cash, and automatic weapons? Most gang violence is gang-on-gang, and therefore a result of our drug laws (since police won't protect their property, they do it themselves). What most citizens have to worry about i...
Wed Aug 08, 2012 3:22 am UTC
Forum: General
Topic: Changing Olympic events
Replies: 83
Views: 12283

Re: Changing Olympic events

Modern pentathlon should be updated. It was originally based on what skills a military officer would need, but the combination of fencing, pistol shooting, and equestrian doesn't make much sense any more, it just feels random. If we try to keep the spirit of military officers, we might end up with s...
Tue Aug 07, 2012 3:12 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

I can close my eyes and claim I can't see where all these white clouds are, but that doesn't make clouds green (for one, there's a lot worse than mugging that a criminal could try to do to you). I do not have even the slightest idea what that means. It was supposed to be a somewhat humorous respons...
Mon Aug 06, 2012 4:34 am UTC
Forum: Mathematics
Topic: Mean Preserving Smoothing
Replies: 5
Views: 1825

Re: Mean Preserving Smoothing

Something like a moving average? Where you replace each point with the mean of points around it?
Mon Aug 06, 2012 4:21 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

No one wants to force you or anyone else to carry. Your safety, your choice. What's not fine, is you making the choice for everyone. It is illegal in practice to carry a concealed weapon in Canada. I think that's reasonable. If the argument to the contrary is "people should be allowed to carry...
Sat Aug 04, 2012 6:05 pm UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

[discusses anti-mugger tactics] I'm sure it's a complicated decision, but I can't imagine a situation in which keeping my wallet is worth the increased risk of violence happening. No one wants to force you or anyone else to carry. Your safety, your choice. What's not fine, is you making the choice ...
Fri Aug 03, 2012 4:45 am UTC
Topic: Gun Control
Replies: 2237
Views: 371147

Re: Gun Control

1. Between the local gun club, Boy Scouts, and friends, have shot .22 rifles, .45 and .36 semiautomatic handguns, 12 and 20 gauge shotguns (skeet and trap), muzzle-loaders, .223 rifle. 2. As in all things, I prefer to err on the side of liberty in general, and punishing those individuals who take ad...
Sat Jul 28, 2012 4:35 pm UTC
Forum: Mathematics
Topic: Frustrating Indefinite Integral
Replies: 16
Views: 5532

Re: Frustrating Indefinite Integral

I really would enjoy a closed form, for a=1 wolfram alpha give -((ln(2))^2)/2 , and also gives closed forms with logarithms for other positive integers, but does not prove its reasoning, although having the right answer helps for a start to work back to the proof... Shouldn't that be equal to -ln(2...
Sat Jul 28, 2012 4:33 pm UTC
Forum: General
Topic: Door-to-door sales
Replies: 30
Views: 7166

Re: Door-to-door sales

I could never do actual sales door-to-door, I'm not pushy enough. Luckily all we're doing is getting people to switch their electricity supplier (many US states, including the one I live in, recently deregulated the electricity market so the local utility doesn't have a monopoly on electricity suppl...
Sat Jul 28, 2012 3:18 am UTC
Forum: Mathematics
Topic: Frustrating Indefinite Integral
Replies: 16
Views: 5532

Re: Frustrating Indefinite Integral

I really would enjoy a closed form, for a=1 wolfram alpha give -((ln(2))^2)/2 , and also gives closed forms with logarithms for other positive integers, but does not prove its reasoning, although having the right answer helps for a start to work back to the proof... Shouldn't that be equal to -ln(2...
Sat Jul 28, 2012 3:16 am UTC
Forum: News & Articles
Topic: Paying in Cash "Morally Wrong" Says Exchequer Secretary.
Replies: 110
Views: 19579

Re: Paying in Cash "Morally Wrong" Says Exchequer Secretary.

Am I the only one who wants to question the assumption that tax evasion is inherently immoral? If you believe your government is going to take immoral actions with the tax revenue, or even if you believe the government has no right to more than X% of your income or Y dollars per person, where X or Y...
Thu Jul 26, 2012 12:07 am UTC
Forum: News & Articles
Topic: Sandusky Scandal at Penn State [trigger warning]
Replies: 97
Views: 13867

Re: Sandusky Scandal at Penn State [trigger warning]

Shutting down PSU's football program for any amount of time would be absurd. JoePa is dead and retired and Sandusky hasn't coached in over a decade. If there was anyone else involved, fire them, imprison them, bury them, etc. But wrecking the football team now punishes tremendously the current play...