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Author Topic: Mathematics Help Thread  (Read 217021 times)

Skyrunner

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Re: Mathematics Help Thread
« Reply #990 on: May 06, 2013, 06:38:38 am »
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« Last Edit: May 06, 2013, 06:49:34 am by Skyrunner »
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ZetaX

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Re: Mathematics Help Thread
« Reply #991 on: May 06, 2013, 01:03:10 pm »
From a mathematical point of view, Magma's solution is superior by being more elegant. You could also combine both solutions to give some proof of the formula for the geometric series (just make the probabilities into arbitrary numbers).

@MagmaMcFry: What kind of competetive problem solving¿
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fractalman

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Re: Mathematics Help Thread
« Reply #992 on: May 06, 2013, 04:54:16 pm »
Quote
such as the curriculum having linear algebra but not matrices,
ok...how....just HOW do they....
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Quote from: NW_Kohaku on February 27, 2012, 12:53:31 pm
This is a masterwork ledger.  It contains 3719356 pages on the topic of the precise number and location of stones in Spindlybrooks.  In the text, the dwarves are hauling.
Quote from: Pokon on January 17, 2013, 01:00:03 am
"And here is where we get the undead unicorns. Stop looking at me that way, you should have seen the zombie deer running around last week!"

ZetaX

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Re: Mathematics Help Thread
« Reply #993 on: May 06, 2013, 05:12:35 pm »
Well, abstractely, linear algebra is the theory of properties of the category of (finite dimensional) vector spaces over a field k. This nowhere requires you to be able to calculate with matrices. Almost everything can be done base-free and therefore matrix-free, e.g. Jordan decomposition, determinants or dimensions.
You only need matrices if you want to apply the theory to something less abstract.
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RedWarrior0

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Re: Mathematics Help Thread
« Reply #994 on: May 06, 2013, 06:27:22 pm »
So the biggest question with mathematics help is what you do with a math degree aside from teaching, research, or actuarial work.
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Bauglir

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Re: Mathematics Help Thread
« Reply #995 on: June 21, 2013, 02:08:35 pm »
RISE FROM THE COLD, DARK DEPTHS TO ONCE MORE SHAMBLE AMONGST THE LIVING

Ahem. So, I'm still working on dice problems. I seem to have found a general solution to "What is the probability of a given result on XdZkY", but I'm having problems implementing a program to spit out a complete list for a given XdZkY. I know exactly what's causing my error messages in terms of the code, but I can't figure out what I need to do to fix it because at this point I'm certain I've made no typos in transcription. So, either there's an error in techmologist's solution, or else I'm misunderstanding something there. The problems arise from the calculation of N, and I don't understand combinatorics well enough to grasp this expression's meaning. Any chance somebody could walk me through a derivation of that expression, or point me to some resources that would help me figure it out? My understanding goes about as far as what a binomial coefficient is.
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In the days when Sussman was a novice, Minsky once came to him as he sat hacking at the PDP-6.
“What are you doing?”, asked Minsky. “I am training a randomly wired neural net to play Tic-Tac-Toe” Sussman replied. “Why is the net wired randomly?”, asked Minsky. “I do not want it to have any preconceptions of how to play”, Sussman said.
Minsky then shut his eyes. “Why do you close your eyes?”, Sussman asked his teacher.
“So that the room will be empty.”
At that moment, Sussman was enlightened.

Another

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Re: Mathematics Help Thread
« Reply #996 on: June 21, 2013, 02:30:41 pm »
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Bauglir

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Re: Mathematics Help Thread
« Reply #997 on: June 21, 2013, 11:20:17 pm »
Oh, hey, thanks. I don't know how I forgot about that. I'll take a look at Matlab or something, come back when I know enough to understand what I'm reading. Now more out of curiosity, anybody got ideas on where to start for combinatorics?
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In the days when Sussman was a novice, Minsky once came to him as he sat hacking at the PDP-6.
“What are you doing?”, asked Minsky. “I am training a randomly wired neural net to play Tic-Tac-Toe” Sussman replied. “Why is the net wired randomly?”, asked Minsky. “I do not want it to have any preconceptions of how to play”, Sussman said.
Minsky then shut his eyes. “Why do you close your eyes?”, Sussman asked his teacher.
“So that the room will be empty.”
At that moment, Sussman was enlightened.

Vector

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Re: Mathematics Help Thread
« Reply #998 on: June 21, 2013, 11:45:22 pm »
You do know about permutations and combinations, right?
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"The question of the usefulness of poetry arises only in periods of its decline, while in periods of its flowering, no one doubts its total uselessness." - Boris Pasternak

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Bauglir

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Re: Mathematics Help Thread
« Reply #999 on: June 21, 2013, 11:58:17 pm »
Kind of vaguely, yeah. Just what I picked up going through differential equations and the linear algebra I skimmed to help me with that, which isn't much. I've got an idea that permutations are the ways to order a set, and combinations are the ways to combine multiple sets (possibly with certain operations being allowed, such as multiplication by a scalar of a matrix for a linear combination), but beyond that concept (which may well be flawed) I've got nothing.

EDIT: Incidentally, I'm not asking for a poster here to give me a full walkthrough, since that would be kind of wow that's too much effort, but more an idea for resources. I've done a bit of thus-far unsuccessful poking around for online courses, for instance.
« Last Edit: June 22, 2013, 12:00:15 am by Bauglir »
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In the days when Sussman was a novice, Minsky once came to him as he sat hacking at the PDP-6.
“What are you doing?”, asked Minsky. “I am training a randomly wired neural net to play Tic-Tac-Toe” Sussman replied. “Why is the net wired randomly?”, asked Minsky. “I do not want it to have any preconceptions of how to play”, Sussman said.
Minsky then shut his eyes. “Why do you close your eyes?”, Sussman asked his teacher.
“So that the room will be empty.”
At that moment, Sussman was enlightened.

MaximumZero

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Re: Mathematics Help Thread
« Reply #1000 on: June 21, 2013, 11:59:22 pm »
Quote from: Vector on June 21, 2013, 11:45:22 pm
You do know about permutations and combinations, right?
I don't. If you'd like to ramble, go ahead. It'd be interesting to read. If you don't want to ramble, don't feel bad. I probably wouldn't understand it anyway.
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Quote from: Bauglir on December 26, 2015, 01:16:49 am
Quote from: MaximumZero on December 25, 2015, 09:30:24 pm
Holy crap, why did I not start watching One Punch Man earlier? This is the best thing.
probably figured an autobiography wouldn't be interesting

Vector

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Re: Mathematics Help Thread
« Reply #1001 on: June 22, 2013, 12:10:22 am »
Yeah, really not in a rambly mood.

But Bauglir, I'd recommend... something like this?  I had a lot of fun with this textbook.
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"The question of the usefulness of poetry arises only in periods of its decline, while in periods of its flowering, no one doubts its total uselessness." - Boris Pasternak

nonbinary/genderfluid/genderqueer renegade mathematician and mafia subforum limpet. please avoid quoting me.

pronouns: prefer neutral ones, others are fine. height: 5'3".

Bauglir

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Re: Mathematics Help Thread
« Reply #1002 on: June 22, 2013, 12:17:38 am »
That looks spiffy and... oh my god. You found a reasonably priced textbook. I love you forever. I'll be buying one of these.
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In the days when Sussman was a novice, Minsky once came to him as he sat hacking at the PDP-6.
“What are you doing?”, asked Minsky. “I am training a randomly wired neural net to play Tic-Tac-Toe” Sussman replied. “Why is the net wired randomly?”, asked Minsky. “I do not want it to have any preconceptions of how to play”, Sussman said.
Minsky then shut his eyes. “Why do you close your eyes?”, Sussman asked his teacher.
“So that the room will be empty.”
At that moment, Sussman was enlightened.

Vector

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Re: Mathematics Help Thread
« Reply #1003 on: June 22, 2013, 12:42:16 am »
;D

Love ya too, babe.  Hope you enjoy yourself!
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"The question of the usefulness of poetry arises only in periods of its decline, while in periods of its flowering, no one doubts its total uselessness." - Boris Pasternak

nonbinary/genderfluid/genderqueer renegade mathematician and mafia subforum limpet. please avoid quoting me.

pronouns: prefer neutral ones, others are fine. height: 5'3".

Mego

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Re: Mathematics Help Thread
« Reply #1004 on: June 22, 2013, 12:52:33 am »
What the actual fuck? A math textbook for under $50? Vector, what kind of demonic ritual did you have to perform for this to exist?
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