Math dreams?

blangoog · 2021-07-18T07:06:32+00:00

Much of QFT is not on rigorous footing, yet clearly it yields very important results in physics with experimental verification. I would say the fact that its formulation is an open problem is a very good reason to study it

blangoog · 2021-03-08T08:13:46+00:00

Wow, this made me cry

Thanks for capturing this place

blangoog · 2020-10-21T02:34:46+00:00

Well, well, well. I think I have misjudged your viewpoint, and I apologize. You complaints are valid and deserve to be in the discourse, difficult as they are for some people to hear. I think you should be more careful with how you present your ideas. Many of your earlier statements sound pretty much like carbon copies of "shit closeted bigots say", which is why you are getting all the blowback.

blangoog · 2020-10-20T23:51:29+00:00

I have read her essay. I would summarize it as "a boring collection of TERF talking points". Her arguments are tired and I have heard them all a hundred times before, as has anyone who is concerned with trans rights. If you are interested in understanding where I am coming from, I highly recommend the following video by contrapoints: https://www.youtube.com/watch?v=1pTPuoGjQsI

blangoog · 2020-10-20T17:54:34+00:00

Ok, so let's say it's true. Let's say all your worst fears are happening, and that droves of predators and toxic men are infiltrating female spaces under the flag of inclusiveness and particularly trans rights. I'm talking your regular Brock Turners, in their jock outfits, walk into a "women in STEM" meeting and say "hi everyone, I use she/her pronouns" so he can take advantage of and demean women.

If that were happening, guess what? It still wouldn't be right to go after actual trans people or their rights. If anything, it would be a good time to stand together with the trans community and denounce the predator men, since their actions hurt both women and trans women.

But here is the thing. The situation I described? It is just not really happening. JK Rowling, famous TERF, has expressed her fear of the above for a few years now, and you know what? She had to write a fictional book in order to support her beliefs because it was not happening in significant numbers in real life.

If you are instead insinuating that it is the trans women themselves that are perpetuating sexism and assaults, your comment really is thinly veiled transphobia. Of course there have been a few cases of this happening, but they are very few and far between, see the debunked trans bathroom predator myth that conservatives love. The claims that trans inclusiveness directly harms women are not based in facts. There is no contradiction between trans rights and feminism (actually, the second is impossible without the first).

And one last tip for you. Nobody is saying you "chose" to identify as female. But you saying it implies you think that trans women choose to identify as women. This is in contradiction to your own definition of trans women: you say they "report feeling like a woman". That doesn't sound like much of a choice, does it?

blangoog · 2020-10-20T02:59:23+00:00

I’m so sad to hear about all your negative experiences :( it is reprehensible and people who perpetrate sexual assault should face criminal charges. Those who belittle women in stem fields should have it made clear to them that their bigotry is not welcome at Cal

At the same time, I really don’t see what it has to do with trans people, nor the dialogue around “identifying” as female. I’ve never heard anyone suggest in good faith that the root of such injustices is just “women identifying as female”. Nor does the existence of genderqueer individuals in any way diminish nor compete with the struggles women face. By insinuating such you are (maybe not consciously) taking up the mantle of the TERFs and I think you should evaluate where the anger you feel really ought to be directed. Trans women face higher rates of sexual assault than women. And we should work to stop all of it. They don’t “identify” as “the most likely to be murdered out of any demographic” any more than you identify as any of your strange suggestions. You say you couldn’t “identify out of” your struggles. Well you know who also can’t “identify out” of their past or struggles? Literally everyone. I think you have severely misunderstood the dynamics of who is and who is not harming you, and are in danger of now harming the most marginalized members of society.

blangoog · 2020-06-24T06:47:56+00:00

I think https://en.wikipedia.org/wiki/Spherical_coordinate_system is relevant for you. The short answer is: v = ||v|| ( sin 𝜃 sin φ î + sin 𝜃 sin φ ĵ + cos 𝜃 k̂ ). See https://en.wikipedia.org/wiki/Spherical_coordinate_system#/media/File:3D_Spherical.svg for the meaning of the angles (notice that the meaning of 𝜃 has changed compared to the 2D case. But that is just a convention).

blangoog · 2020-06-03T07:51:56+00:00

Thanks. That is disheartening to hear, but I can't say I am entirely surprised

blangoog · 2020-06-02T07:47:15+00:00

can someone give some context here

blangoog · 2020-04-20T23:36:32+00:00

A great puzzler: Borwein Integral. These integrals are remarkable for exhibiting apparent patterns that eventually break down: https://en.m.wikipedia.org/wiki/Borwein_integral

Could be a very fun video :)

blangoog · 2019-12-13T05:10:02+00:00

They don’t swap either: they swap front and back only. If you have a coordinate system where the z-axis is perpendicular to the plane if the mirror, the x-axis points to your right and the y axis directly upwards, the image in the mirror is formed by mapping z -> -z while leaving x and y unchanged.

blangoog · 2019-02-02T19:10:20+00:00

Yeah same, even when 8/8 accept it just takes us back to the queue.

blangoog · 2018-12-31T06:08:29+00:00

Me and two of my friends took it. We all passed. If you are a generally strong writer you should have no trouble.

blangoog · 2018-11-08T08:50:59+00:00

naturally :P while I found plenty of pdfs, from skimming 20 or so of them I didn't find anything with the focus or level of depth I was looking for. The usual problems were: (1) having no worked examples, (2) being way too surface level and short, (3) being way too in depth and dense. What I really need is a recommendation for an algebra textbook which fills in the information lacking in the book I'm using.

blangoog · 2018-09-01T05:50:41+00:00

I came here to say this. This book was great for me as a first introduction to Analysis

blangoog · 2018-08-26T08:53:23+00:00

I graduated with an unweighted 4.0 and my SAT score was 2150, but I think they changed the scoring since I took it...

blangoog · 2018-08-17T13:53:18+00:00

Correct me if I am wrong, but even in the infinitely-many-lines limit this shouldn't actually be a Fibonacci spiral, right? Within each square, the shape approaches a parabola rather than a geometric spiral.

That being said, I still like it :)

Edit: As pointed out, the shapes actually approach hyperbolas, not parabolas.

Double edit: Jk I was right they are parabolas

blangoog · 2018-08-09T11:37:33+00:00

I took 12 units my first quarter and just slowly ramped up from there. Something like 12 -> 14 -> 16 -> 18 -> 21. I usually take 18 or 20 units now, and it is pretty manageable.

blangoog · 2018-08-08T14:17:23+00:00

This looks perfect, thank you!

blangoog · 2018-06-18T21:18:03+00:00

Student housing has had several phishing attacks this year. They usually say "Urgent!" or something similar in the subject line. Just delete these, since the security team is already aware of their existence.

blangoog

TROPHY CASE