Mathematics

12:44 AM

@PedroTamaroff that sounds weird... "in $\mathbb{R}^n$, no infinite, bounded set is discrete" sounds better.

Hi @robjohn how are the bunnies, and have you decided on calling one of them skully?

Just to make them sound more masculine.

Butch Cassidy & the Sundance Kid pops to mind

1:40 AM

@IceBoy bunnies are fine. None are called Skully

@IceBoy So does Thing 1 and Thing 2...

DemCodeLines

2:33 AM

anyone still here?

3:35 AM

There^ is your answer @DemCodeLines :-)

Hey guys, what math do I need to know before I start studying an intro to algorithms class? Thanks :)

3:56 AM

@Sawarnik: Yes, I know topology.

@Adam: Not terribly much believe it or not. Algorithms is a very broad field. Obviously if you want to delve into some kinds of algorithms in particular, you need to know much more math. Generally though, for a good basic grasp of algorithms, you mostly need good problem solving abilities and a broad exposure (not necessarily too deep) to various kinds of mathematics.

@Adam: Most of the graphical algorithms requires knowledge of trigonometry and spatial geometry. Algorithms about physics engine are easier to understand if you have some physics basis. If you want your program to help you to take decisions, you might need to study operational research which is a really huge sub-fields of math which includes graph theory, game theory, optimisation (which then includes analysis and linear algebra)

@Adam: Number theory definitely is helpful as is some basic graph theory. If you really want to be able to analyze algorithms, you'll also need a fairly solid grasp of Big O notation.

@Adam: I reccomend quickly going through The Art of Computer Programming which covers the essentials.

4:12 AM

Hey @Nick thanks

Welcome :D

spatial geometry... I'm wondering more and more what the applications are for this type of math

I've recently realized my enjoyment with math and im deciding to go back to school

but I'm taking a year to figure out exactly which route I want to go

thought I know I want it to involve computers

though*

@Adam: Hopefully, you mean going 'back to school' in a metaphorical sense. It would be a waste of time to actually fully learn the things I've listed above. It's much better to dive into the class and learn as you go along.

I'm doing a year of further math and then a masters in a computer/math related subject

and yeah im not going to FULLY learn them haha

I just want a sense of what they are used for etc.

and to find something that seems interesting etc.

all of the above @Nick

@Adam: That's a pretty good idea. Good luck with that.

4:17 AM

Thanks, would you mind sharing why you think it's a good idea @Nick

My BSc is in accountancy but I didn

t enjoy it much at all when I worked at Pricewaterhousecoopers

so im 26 now, and I think its as good a time as any to make the switch to doing something I enjoy

@Adam: Well, pursuing any kind of math is an endless but very fruitful endeavour. Anyone in this room can attest to that. Plus, computer science needs math to applied (properly).

Well, I have run.

@Nick I see. Thanks for the chat. Hope to see you around soon.

user2179021

5:58 AM

hi

could anyone tell me.. is this question unclear? math.stackexchange.com/questions/952446/… ?

I am surprised by the lack of interest in it

Will Hunting

7:53 AM

All my holy math books have arrived from amazon, yay!

@WillHunting: Congratulations.

Now, use them as pillows. There is a good chance osmosis may occur!

rehband

@WillHunting Congratulations

@rehband: Do you speak German?

@rehband: sprechen Sie Deutsch , Herr?

Will Hunting

8:09 AM

Ich liebe dich!

Eine kleine Nachtmusik!

@WillHunting: Are those songs?

Will Hunting

@Nick One of them, lol.

Are you telling me no one has released a song named 'Ich liebe dich!'

That gives me an idea, I'll translate Bow-Chicka-Wow-Wow, retitle it and become famous in Germany!

... mhh, too bad I don't know enough German.

Greetings

Greetings

8:21 AM

@robjohn I need to show you something crazy awesome (but in private).

@Chris'ssis: If you're not too busy could you help me with a very simple type of differential equation. Just give me a hint as what to do: $$x^2\mathrm dy-y^2\mathrm dx+xy^2(x-y)\mathrm dy=0 $$

Apologies if it is too trivial for you.

@IceBoy: Greetings. Could you help me with the above?

post it on main and you will get a detailed answer

8:36 AM

I don't want a detailed answer.

Just a method.

Ask for a hint at the method.

I'll search for it first. :D

@IceBoy: So, how's your day?

Fine thanks, how are you my friend?

@Ice: Wandering in between topics. It's kind of like travelling planets. One moment you're on Venus, the next moment you're on Mars.

Topics within math?

8:40 AM

... No, topics within math, I consider countries or regions of a planet.

I have a definitive landing points on each planet.

Good plan.

@Ice: What's your favorite planet? + What's your favourite topic (pick anything)?

Mars, because it is red.

afk

@Ice: Really, you know about the $A$lliance for the $F$reedom of $K$osovo?

Random Variable

@robjohn @Chris'ssis I can't find that paper I mentioned the other day. Has any progress been made on that sum related to the Dedekind eta function at $i$?

8:46 AM

@Chris'ssis hey there.

@RandomVariable I didn't work on it anymore, I'm not used to theta function involving series.

@RandomVariable I tried, but I have it on hold for now.

afk

@Nick gesundheit!

@robjohn: and a Guten Tag to you too.

8:49 AM

@Nick whenever I say afk, I feel it is the sound a cat makes coughing up a fur ball :-)

5

i thought it meant

4 mins ago, by Nick

@Ice: Really, you know about the $A$lliance for the $F$reedom of $K$osovo?

until I googled it

@Nick in some contexts, perhaps, but not in a chat room :-)

@robjohn: Could you help me with the following:

22 mins ago, by Nick

@Chris'ssis: If you're not too busy could you help me with a very simple type of differential equation. Just give me a hint as what to do: $$x^2\mathrm dy-y^2\mathrm dx+xy^2(x-y)\mathrm dy=0 $$

@Chris'ssis I had fun with this answer.

rehband

@Nick Natürlich. Du auch?

8:54 AM

@robjohn Nice. Let me find a brilliant way there ...

@rehband: nicht. könnten Sie mir helfen mit meiner Frage?