/sci/ - Science & Math

>>5842962

How about proof by contradiction?

Assume 1/0 to be defined.

Now what the fuck does that imply? Fuck knows.

Now what the fuck is k? Fuck knows.

Therefore the assumption is wrong and 1/0 is undefined

>amerifats

>>4685693
Semantic arguments are unnecessary. We all intuitively agree on what these words objectively mean.

if you stickied and unstickied threads, and their adjacent threads, could you stickie all threads?

>>4547056
>i'm a retard, and said something retarded about evolution, so i'll just blah blah on the internet

e^(xe^x)

>>4505151
>objective argument
>lying about his autism

can anybody give me some hints on this problem? I saw Riemann integrals for the first time yesterday and can't seem to figure this out.

Suppose f is continuous on [a,b] and takes nonnegative values, with the integral from a to b of f(x)dx = 0. Use the definition of Riemann integral to prove that f(x) = 0 for all x on [a,b]?

sup /sci/ can you tell me how I can prove this series diverges?

it's the sum from n = 0 to infinity of (n^3) / (n^4+1)

>>4311834

hey faggot, why are we supposed to believe that you're actually a genius. prove it for us.

1. Let a, m be natural numbers with a < m. Can you multiply a by itself a certain number of times t so that a^t minus 1 is divisible by m? Why? If not, when can you and when can you not?

2. Here's a result I discovered myself. Let x be a member of a group G and C(x) the conjugacy class of x. Show that if you multiply the order of the subgroup generated by x by the order of C(x), the resulting product divides the order of G.

3. Look at all the ways of permuting n > 5 elements, and specifically look at the number of ways P you can switch five elements in a row: that is send a to b, b to c, c to d, d to e, and e back to a, where a, b, c, d, e are any of the permuted elements. What's the largest number of permuted elements n so that P*5 divides n!.

/sci/ i wanna thank all of you who had told me to go into physics. i love it and i also realize what i can do for mankind with it.

i just have one more question.
>what can I do with a math major along with physics?

ITT the lower one rates oneself on the intelligence scale, the smarter they actually are.

>major in philosophy

you'd better be preparing to go to law school.

>>4022624

>If they wanted you to do that 1st, they woulda put that 1st.

can anybody help me with some abstract algebra? let f: V => W be a linear transformation of vector spaces over a field F, and suppose g: W => V is a linear transformation such that for all w in W, f(g(w)) = w.

I need to show that for every v in V, v = x + y where x is in ker f and y is in the image of g.

Any ideas?

parentheses.

>>3876627
What's wrong with you

Choose my major.

http://www.brown.edu/Administration/Registrar/concentration.html

I'm going to be a sophomore, I was a physics major at my previous school (Reed College). I don't think I want to be a physicist, now.

super basic set theory question /sci/

A={1,1,2,3}
B={3,2,2,1}

are they equal?

>mfw EK thread again
never change, my dear /sci/ tripfaggots, you are the source of such enormous amount of amusement to this board.

God Bless the fools of the town...

>>3287195

high school fag here
where can I read about quantum physics and actually understand?
I started reading the articles in wikipedia but I honestly got really mixed up and ended up with like 15 tabs open.
plus I didn't really understand what I read...

is it even possible to understand the concept and basics with a high school level mathematical knowledge?

my physics book (classic mechanics) said something about it and I wanted to read a bit more...
any sources you guys recommend? a special subject I ought to start with?
again, I don't expect to learn too much, just to get the general hang of it.

thanks.

im not American
fgsdf fsg