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How do I eliminate stress and anxiety when taking an exam or at least how do I learn to focus under stress?

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if you actually knew the material you wouldnt be nervous

if you know the material and are still nervous thats called an irrational fear >>>/psych/

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>>7768289

Accept that you are going to do badly and just go in there and have fun :3

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>>7768289

There is no reason to be nervous going into an exam

If you studied, you'll do well

If you didn't study you're fucked and there's no point in worrying, just hack it as best you can

Literal worst case scenario is you burst into treats on a final, get zero, and retake the course next year

not that big of a deal, and it's never going to happen if you actually studied

Got any interesting space related pics?

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>>7768246

Oh shit.

This is my moment.

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>>7768441

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I'm in talks with two professors regarding my PhD studies. I have noone to ask so I'll post here

1. Detection of drones using passive antennae -- the basic idea is to observe disturbances in the EM fields of routers and such, and to try to guess what kind of object causes the disturbance. Basically all computational physics

Pros :

Super helpful guy and has good connections

I think this topic would be useful when looking for a job later

2. Trying to find and detect new terms in heat conduction effects.

So this one is tricky, because I...

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Learn proper communication skills and then come back and try your post again.

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>>7768243

The second one seems less risky. You don't want to still be in grad-school in your 30s and there's so much that could go wrong with 1.

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>>7768243

1 is legitimately interesting and I'm a layman

Anonymous

Computer Science Degree 2016-01-07 20:43:06 Post No.7768230

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Computer Science Degree 2016-01-07 20:43:06 Post No.7768230

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Hey faggots! You use to denigrate people who decide to graduate in CS instead of Math.

> "CS is a meme degree"

> "kek too easy"

But, you know what? The founder and CEO of Facebook, a billionaire company, is Mark Zuckerberg. Who was exactly studying Computer Science at Harvard.

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He's a fucking kike tho...

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A $300 million lottery winner was studying pottery.

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>>7768230

Kek, you dont need a CS degree to build a website

Is Rudin to /sci/ what SS is to /fit/?

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>>7768228

>SS

Straight shota?

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>>7768240

SS (starting strength), basically training scheme for them skinny fags

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Here's my SS progress.

Anonymous

/sci/ feels 2016-01-07 20:28:40 Post No.7768201

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/sci/ feels 2016-01-07 20:28:40 Post No.7768201

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>"the proof of this important theorem is left as an exercise for the reader"

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>f'(x) instead of df/dx

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>>7768204

f' is just the "name" of the function obtained by taking the derivative. The real travesty is that you don't seem to understand the difference between a function evaluated at x and a function.

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>>7768204

>df/dx

>Not [math] D _ x ^ 1 f(x)[/math]

Plebius Maximus

Can someone on /sci/ help explain this discrepancy?

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Jet fuel can't melt steel beams.

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>>7768187

only one of those buildings had a plane crash into it

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>>7768195

Explain tower 7. No planes.

Is there a specific way to find out if a matrix's rank depends on a variable inside said matrix?

In this example I've just been trying to replace beta (alpha being any value) with random values until I get the rank down to 2.

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Use GauB

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>>7767966

Even after Gauss it's hard to get to a conclusion, unless I'm doing it wrong.

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>>7767964

The rank of a matrix is equal to the size of the biggest non zero determinant you can calculate from it.

That matrix already has got at least two as rank, since it has a non zero 2x2 size determinant. To test if its rank is three, simply calculate the bigger determinant possible, which is the unique of size 3x3.

Let's have an algebraic topology thread.

Yesterday I learned about Eilenberg-MacLane spaces. That is for a group G and a natural number n you can construct a topological space K(G,n) such that G is the n-th homotopy group and all other homotopy groups are trivial.

Can I get a similar result if I want more homotopy groups to be non-trivial and to equal other previously specified groups? For example if I have a set of groups (Gi) with i in some finite or countably infinite index set, can I find a space where the i-th homotopy group is Gi for all i? Or is there...

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Maybe there is a glueing of the K(Gi,nj)'s which does this, I'd ask on SE

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>>7767928

I know category theory and need to learn some basic algebraic topology for a homotopy type theory course. What's a good introductory resource?

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>>7768076

OP here. I like Tom Dieck's "Algebraic Topology" and Davis & Kirk's "Lecture Notes in Algebraic Topology". Bredon's "Topology and Geometry" also contains many chapters on algebraic topology, but I only briefly looked into that book.

the only possible way to travel to another planet or extraterrestrial planet is to invent a transport that can travel at lightning speed

when will human be able to do that ?

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Actually, we are NOT part of the virgo supercluster but the Laniakea Supercluster.

https://www.youtube.com/watch?v=rENyyRwxpHo

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>>7767918

why did God created another solar system where it is beyond human reach ?

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>>7767918

even travelling at the speed of light would be slow as fuck. and imagine how long it would take to accelerate to that speed and what kind of long term effects the g's would have. we'd have to be suspended.

Anonymous

I made a new field of mathematics 2016-01-07 17:13:06 Post No.7767891

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I made a new field of mathematics 2016-01-07 17:13:06 Post No.7767891

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I made a new field of mathematics
Anonymous
2016-01-07 17:13:06
Post No. 7767891
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Is this a thing already?

I call it pipe theory, or fat-graph theory. Its 1 dimension up from normal, 'thin' graph theory. As seen in 1a, the vertices become 2D smooth, non intersecting curves, and the edges become surfaces with boundaries only on the curves in 1b. All the fat graphs drew here are 'volumetric' graphs, the equivalent of planar thin graphs. meaning the surfaces do not intersect each other. The process of 'fattening up' a planar graph to a volumetric is however not just redrawing all the lines as surfaces, as seen in 3, fattening...

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>amerimath

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Neato. I'll look at this later.

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Formalize it and come back.

You didn't even bother drawing the pics in a way that shows what's in the fore-and background.

The chance that the questions are not questions of homotopy and homology theory is practically zero.

we're all turing machines.

prove me wrong.

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>>7767881

stop using words you don't understand, idiot

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>>7767885

Protip: You can't.

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>>7767881

almost.

Turing is basically related to infinite sets and we're not.

Yet, in practical engineering, yeah, we are, so what.

Anonymous

Naming the new elements. 2016-01-07 16:53:49 Post No.7767862

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Naming the new elements. 2016-01-07 16:53:49 Post No.7767862

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Four new elements (113, 115, 117 and 118) have been confirmed by IUPAC, completing the seventh row of the periodic table. What do you think should they be named? Srs bzns.

For sure 113 should be named after Japan like rikenium or nipponium. I don't know about the other ones.

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>>7767862

This is all over IFLS and similar on facebook.

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>>7767862

USA USA USA USA USA USA USA USA

Freedium

Libertium

Prosperium

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>>7767904

those aren't legal names, faggot

Anonymous

Is Moore's Law dead? 2016-01-07 16:13:29 Post No.7767808

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Is Moore's Law dead? 2016-01-07 16:13:29 Post No.7767808

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Why are we seeing this decrease in the rate of moore's law?

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>>7767808

>Singularity fags BTFO

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>>7767808

primarily it is because we have hit the limit of easy reduction and new gains are increasingly difficult to mass produce. underlying this is the problem that lithography cant get much tighter than it already is.

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>>7767808

decoherence of single photon transistors

Imagine if there happened to be a general consensus to divert all attention into a particular field of Science, which field would it be and why?

For me it's Medicine, at least we would less likely die out and hopefully find cures for shit like AIDS and Cancer this way or possible be immortal.

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Mathematics, obviously.

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>>7767731

Electrical engineering, battery technology specifically

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>>7767731

Chemistry. Central science, so advances in chemistry directly impact all other fields of scientific knowledge.

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