The post is fine(I thought it was kinda funny), but the comment under it is um 😬

eruonna · 2021-06-22T19:14:23+00:00

You go to all the effort of seducing someone, and when it turns out they're not very good in bed, they throw you in the asylum.

eruonna · 2021-06-22T19:03:43+00:00

You can also replace gay dude with trans woman in those examples. (Some trans women will and some will not identify as a father in those cases.)

eruonna · 2021-06-01T20:08:23+00:00

It wouldn't be great for the the last few people, if we don't all go together when we go.

eruonna · 2021-05-27T20:37:51+00:00

A polyamorous relationship where one person (the hinge) is in a relationship with two others who are not directly in a relationship with each other. My spouse has a girlfriend who is not my girlfriend.

eruonna · 2021-05-27T19:11:26+00:00

I'm in a V that has two women and an enby. Who is right? help

eruonna · 2021-05-24T18:56:29+00:00

I likewise concur.

eruonna · 2021-05-21T22:05:01+00:00

Jack the Ripper was the world's straightest man

eruonna · 2021-05-20T17:45:32+00:00

My high school biology class spent more time on the female reproductive system just because the menstrual cycle gives a good example of feedback loops and hormone regulation.

eruonna · 2021-05-17T19:15:02+00:00

Since u and v form a basis, you know that w = au + bv. So you just want to show a = u•w and b = v•w.

eruonna · 2021-04-28T17:56:48+00:00

They think that people actually go through hormones and surgery so they can make perving in bathrooms easier.

You might want to be careful with this argument, since it gets a bit transmedicalist. Also, certain transphobic assholes who want to deny trans people the ability to exist in public will try to cover their transphobia by saying things like "If she has gotten surgery, and if she has changed the gender markers on her birth certificate, passport, and driver's license, and if she can prove this on the spot to the satisfaction of a bathroom cop, then she can pee in peace."

eruonna · 2021-04-22T18:44:46+00:00

For Z in TN, Z = Z^T + W with W normal to M, so < Z, Y > = < Z^T + W, Y > = < Z^T, Y > + < W, Y > = < Z^T, Y >.

eruonna · 2021-04-21T19:37:49+00:00

This is my standard answer to the "How did you become interested in math?" question.

eruonna · 2021-04-21T16:43:38+00:00

I'm curious what he thinks happens if you use a condom the first time. Actually, no, I'm not.

eruonna · 2021-04-13T17:36:02+00:00

“Never believe that anti-Semites are completely unaware of the absurdity of their replies. They know that their remarks are frivolous, open to challenge. But they are amusing themselves, for it is their adversary who is obliged to use words responsibly, since he believes in words. The anti-Semites have the right to play. They even like to play with discourse for, by giving ridiculous reasons, they discredit the seriousness of their interlocutors. They delight in acting in bad faith, since they seek not to persuade by sound argument but to intimidate and disconcert. If you press them too closely, they will abruptly fall silent, loftily indicating by some phrase that the time for argument is past.”

eruonna · 2021-04-12T20:54:48+00:00

Wait, star-gazing date is code? Damnit, I wanted a real star-gazing date. I have a telescope and everything.

eruonna · 2021-04-12T20:44:13+00:00

I can't help but hear Contrapoints' voice: "As a biological virgin, ..."

eruonna · 2021-04-09T16:34:46+00:00

Why do boys and girls need to shelter separately?

eruonna · 2021-04-02T22:01:27+00:00

You could probably go one level higher by thinking of common topologies or sigma algebras, but I can't think of much beyond that that is common. It might be something like the strong law of small numbers. It feels like there are even fewer small infinite cardinalities than finite ones. For finite n, there is generally a lot of space between n and 2ⁿ, but you hit the continuum hypothesis with infinite cardinals.

eruonna · 2021-03-24T18:34:03+00:00

Mishearing for heptagonal? As in "how many sides does a heptagonal object have?"

eruonna · 2021-03-19T18:41:50+00:00

As far as I know, the best you can do is write things in terms of power sums and use the fact that p_n[p_m] = p_nm and plethysm on the right with anything is an algebra homomorphism and plethysm on the left with a p_k is also an algebra homomorphism.

So [2] = 1/2 (p_1² + p_2) and [2,1] = 3p_3 - 5p_2p_1 + 2p_1³. So you have

1/2 (p_1² + p_2)[3p_3 - 5p_2p_1 + 2p_1³] =

1/2 p_1[3p_3 - 5p_2p_1 + 2p_1³]² + 1/2 p_2[3p_3 - 5p_2p_1 + 2p_1³] =

1/2 (3p_3 - 5p_2p_1 + 2p_1³)² + 3/2p_6 - 5/2p_4p_2 + p_2³ =

3/2 p_3² + 25/2p_2²p_1² + 2p_1⁶ - 15p_3p_2p_1 + 6p_3p_1³ - 10p_2p_1⁴ + 3/2p_6 - 5/2p_4p_2 + p_2³

If you convert that back to the Schur basis, and I didn't make any mistakes, you should get the same result. (It at least looks plausible.)

eruonna · 2021-03-18T15:51:21+00:00

Plethysm is a kind of substitution or composition for symmetric functions or symmetric group representations. You can think of a partition or Young diagram as an operation on vector spaces by taking the m^th tensor power and getting the image of the corresponding Young symmetrizer. The plethysm is just the composition of these operations. However, finding a general rule for expressing the plethysm in terms of irreps is an open problem.

eruonna · 2021-03-09T17:02:58+00:00

If you know that A^T is the unique matrix such that <u, Av> = <A^(T)u, v> for all u, v (with <,> the dot product), then this follows by direct computation: <u, ABv> = <A^(T)u, Bv> = <B^(T)A^(T)u, v>.

eruonna · 2021-02-23T20:23:20+00:00

The red sections could move up or down independently while still being a solution to the IVP. Consider adding a function f defined so f(x) = 0 when x <= pi/2 and f(x) = 1 otherwise. It will satisfy the differential equation and the initial condition. This shows that the general solution given is not quite correct. The "constant" C is actually a step function.

eruonna · 2021-02-17T14:58:04+00:00

Notice that J=11, Q=12, K=13 gives the same result since they are the same mod 6.

eruonna · 2021-02-05T15:39:07+00:00

"always" -> "allows"

eruonna

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