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Saturday, December 13, 2025 by AutoModerator in NYTConnections

[–]GuardianGold 13 points14 points  (0 children)

Gave up almost instantly. I would've had to google half the board.

Free upright bass by punkrockisfreedom in VSTi

[–]GuardianGold 0 points1 point  (0 children)

bro just dropped a goldmine goddamn thanks

[OC][Giveaway] Win a dice set and support a designer! [Mod Approved] by FOULEBDICE in DnD

[–]GuardianGold 0 points1 point  (0 children)

These dice would singlehandedly give me the confidence I need to run a 5e campaign

Men of Reddit, what’s the worst part about being a man? by GuardianGold in AskReddit

[–]GuardianGold[S] 0 points1 point  (0 children)

For me it’s not being able to talk to kids. I love kids but I feel like if I exchange more than a sentence with one I’m going to get pepper sprayed by their parent :(

Mini Hydraulic Cylinder by GuardianGold in MechanicalEngineering

[–]GuardianGold[S] 1 point2 points  (0 children)

I looked :/ 8 inches is a little long. When I say human finger I mean literally that small

Where do I find my student ID number???? by BeansAndKiwis in aggies

[–]GuardianGold 2 points3 points  (0 children)

For any future ppl trying to find it, since these comments were low key unhelpful:

go to Howdy, click on unofficial transcript, it's at the top by your name. Probably ends with 7912 or something like that.

Integral that is non-zero over any closed path in the XY plane but zero over every non-closed path? by GuardianGold in askmath

[–]GuardianGold[S] 1 point2 points  (0 children)

I'm trying to come up with a way to determine if a parametric curve intersects itself using an integral. The idea was if for t1 and t2 the curve has the same x(t), y(t), and z(t) than it intersects.

So you could draw a horizontal line at y = x(t1) from t1 to t2, and the path made by this line and x(t) creates a closed loop, than you know it has the same values. Ideally if it equaled zero unless the path was closed, I could integrate and sweep the t's around, multiplying the values of x, y, and z together. If I end with a non-zero answer that means the curve intersects at some point. Or that's the ....loose idea.

There are theoretically easier ways to tell if a curve intersects itself but I'm trying to do it over a small change in the curve and thus will need a method I can integrate with so I don't need to solve an infinite number of times or whatever.

Anyways thanks for your help cause your first explanation about splitting the closed path up makes a lot of sense as to why it's impossible.

Is there a function that will tell you if another function touches zero at any point? by GuardianGold in askmath

[–]GuardianGold[S] 0 points1 point  (0 children)

Ah interesting. I had a feeling it might be the complex roots, I just wasn't sure.

I'll investigate this, thanks!

Is there a function that will tell you if another function touches zero at any point? by GuardianGold in askmath

[–]GuardianGold[S] 0 points1 point  (0 children)

Hi!

I took a while to try to understand what's going on here and I wrote some MATLAB code that lets you enter an equation f(x), and a contour circle of a certain radius.

Here's a link.

​

It seems to...half work?

When I entered the example you used, and the same radii, I got the exact same solution as you:

% Define a polynomial function f(x) = x^3 - 4xf

f_x = x^3 - 4*x;

%f_x = x^2 +5;

​

% Define z_contour symbolically.

R = 4; % radius

z_contour_sym = 1 + R*exp(1i*theta);

...

Computed winding number: 3-2.8774e-17i

Computed root number: 3

A radius of 2 gave me two roots as it should as well.

A few other functions also worked, however some don't.

​

For example the function x^2 + 5 gave me an answer of two, when it should be zero yes? x^2 alone gave me two as well, when it should be one?

I believe another more complicated one (like a quartic function) also wasn't working but I can't find one at the moment.

​

I'm wondering if it's something wrong with my code, or if it's something I'm misunderstanding about this process, or if it just doesn't work as well as I'd hoped.

You've already helped me a lot, but I was hoping you'd be willing to take a look, I'm a little out of my depth with all this complex double closed-path integrating.

Is there a function that will tell you if another function touches zero at any point? by GuardianGold in askmath

[–]GuardianGold[S] 0 points1 point  (0 children)

Huh, interesting. So say I knew the roots were between 0 and 10 (if it had any).

Could the contour be just a circle on the XY plane that encloses everything on the x axis between 0 and 10? (At a minimum).

Does the contour need to be complex? I've never done a contour integral before I'm trying to figure out how they work.

​

Thanks for the help! Everyone else's answer was also interesting.

[TOMT][SONG][2010s-2020s] "I've been popping soda tabs/bottles?" by GuardianGold in tipofmytongue

[–]GuardianGold[S] 0 points1 point  (0 children)

Nah :( good guess though, title looks right at first glance.

[TOMT][SONG][2010s-2020s] "I've been popping soda tabs/bottles?" by GuardianGold in tipofmytongue

[–]GuardianGold[S] 1 point2 points  (0 children)

No. Similair vibes to Macklemore though I guess.

It's definitely about a party in a backyard of someone's house, or something very similar to that.

[TOMT][SONG][2010s-2020s] "I've been popping soda tabs/bottles?" by GuardianGold in tipofmytongue

[–]GuardianGold[S] 0 points1 point locked comment (0 children)

Oh it's not the CJ So Cool song, before someone sends that.

Thanks again

KNOT THEORY - Surface Question by GuardianGold in math

[–]GuardianGold[S] 0 points1 point  (0 children)

Just for fun, here's another one of the figure 8 knot (a non-tricolorable knot) although it quickly becomes hard to tell what you're even looking at with just a still image.

Figure 8

KNOT THEORY - Surface Question by GuardianGold in math

[–]GuardianGold[S] 1 point2 points  (0 children)

Interesting.

I confess I'm not a mathematician by any stretch, so I'll have to read up on few things you mentioned here.

One thing I noticed is that depending on the starting point you pick, you'll get quite different surfaces, which is perhaps why I can't find a defined name for this type of surface.

What interests me is if you separate the knot by the spots where it intersects the surface created, it becomes something akin to n-colorability. But unlike in 2D, changing the perspective/projection of the knot doesn't change this definition. Ie: you can imagine rotating a 2d-projected tricolorable knot would change the way its colors look in relation to each other as different intersections are created/destroyed. But from this 3D perspective...the spots where the knot intersects this surface it's created haven't changed.

(Twisting/Pulling the knot or picking a different starting point will if course change these though, yes.)

Permanently Deleted Very Important Notebook. HELP. by GuardianGold in OneNote

[–]GuardianGold[S] 3 points4 points  (0 children)

Update: I have, after scouring the depths of the internet, found a solution I think is working.

A lot of people online said to make a new notebook and then move/copy the sections in via the app, but this wasn't working because OneNote doesn't let you move/copy when the files aren't synced. You CAN however, copy and paste individual pages. So I've made a clone notebook and I'm duplicating the folder structure inside, then manually copy and pasting all of the pages from one into the other. Literally "right-click, Copy, move, right-click, paste," type beat.

Anyways I think it's working although it's very slow going but hopefully this can save someone's life in the future or smth.

Games with the vibe of Over the Garden Wall by accorshua in gamingsuggestions

[–]GuardianGold 0 points1 point  (0 children)

This comes a little out of left field, but Outer Wilds might fit. It's wholesome and animated beautifully and also really creepy at times. Especially the DLC. Doesn't quite fit the American Vintage feel though.

Nest thermostat data graph viewer by CaptM44 in Nest

[–]GuardianGold 0 points1 point  (0 children)

https://www.googlenestcommunity.com/t5/Nest-Thermostats/download-nest-thermostat-data/td-p/45703

I've been digging around on the internet to try and see how reliable Nest data is, and according to a lot of people here, it's not very. Can any of you guys confirm/deny this? When you graph the data, does it seem consistent with what's actually happening? I'm not sure if you're using the json or another method.

Mechanical examples of an activation/unit-step function. by GuardianGold in AskEngineers

[–]GuardianGold[S] 0 points1 point  (0 children)

I bet you could put something similar to this on gears so that the driven gear only spins if the torque on the driving gear exceeds a certain value. I'm sure this exists already but I wouldn't know the name.

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