Activity for Pavel Kocourek
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #286961 |
Post edited: Summarized the question. |
— | almost 2 years ago |
| Comment | Post #287761 |
I just realized another thing - there are no filters of questions and there is no tab ``unanswered`` as it is on MSE. I think that it would be great if we could answer most of the well formulated question. Having a tab containing such question would encourage doing so. (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
Hi Peter, thanks for clarifications, I was referring to this post: https://math.codidact.com/posts/286961 (more) |
— | almost 2 years ago |
| Comment | Post #287764 |
I completely agree. I was not serious about trying to prove myself being a good mathematician by gaining high rep. I simply meant to illustrate that voting on meta is used to reflect agreement versus disagreement whilst in Q&A it reflects well formulated/written versus poorly formulate/written. There... (more) |
— | almost 2 years ago |
| Comment | Post #287764 |
Thanks a lot for the clarifications. In that case Codidact is more sophisticated than what I thought, I really hope that we can make this community grow, and migrating here from MSE won't involve so much of tradeoff between principles and pragmatism. (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
I don't see how giving users an endowment of bounties would work. That would mean that completely new users (mostly students asking homework questions) could freely make bounties. Then the bounties would lose their value. There needs to be some kind of cost for offering a bounty, I think that limitin... (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
A community chosen list of relate posts sounds great. Yet, I find the machine generated list of (maybe) related posts very useful. On MSE, when I do don't do my homework trying to search my question properly, I sometimes find answer or a key to answer in the list of auto-generated similar questions. ... (more) |
— | almost 2 years ago |
| Comment | Post #287764 |
Hahaha, I definitely agree on this. I noticed that some users with high rep on SE are just extremely patient answering basic questions. I though that it would be great to have separate measure that would count the reputation in answering challenging questions in a field. Something in the sense that i... (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
I have not noticed, thanks for pointing that out! (more) |
— | almost 2 years ago |
| Edit | Post #287761 |
Post edited: |
— | almost 2 years ago |
| Comment | Post #287761 |
I added point 5. and 6. to the cons. (more) |
— | almost 2 years ago |
| Edit | Post #287761 |
Post edited: |
— | almost 2 years ago |
| Comment | Post #287761 |
Yeah, but the score is not display now either, so a newcomer will get confused about the way questions are ordered anyways. I would be in favor of displaying the score as a context information when placing mouse above the overall count. The overall count could also have color, if almost all votes wer... (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
Thanks a lot for explanations, I just posted the queston: https://math.codidact.com/posts/287764 (more) |
— | almost 2 years ago |
| Edit | Post #287764 | Initial revision | — | almost 2 years ago |
| Question | — |
Meta rep counting into the Math rep. > Can we agree on how much, if any, the meta reputation should account as part of the overall math reputation? It seems that currently the math.meta reputation counts equally to the math reputation. I feel like this spoils the quality of the math reputation. I understand that participating in the ... (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
Another one more thing I realized just after posting here. It seems that the meta and the math reputation are not separate...
> So why should I both asking questions if I can gain reputation by share bunch observations on meta and gain the rep much faster. Most importantly – don't post anything pot... (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
Thanks for the links to related articles! Whilst I find showing the fractional Wilson score instead of votes even more terrible idea, I really like the proposal of @Isaac_Mosis. I think that just changing the fonts won't help, unless there is the difference of the up and down votes in big font and th... (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
When trying to comment I realized that I forgot to mention one more thing: It takes me time to get used to the threads of the comments, I find it somewhat unnatural. It takes one more step to write or read comments. I would find more useful if comments would display in a standard expanded way as on S... (more) |
— | almost 2 years ago |
| Comment | Post #287761 |
I just noticed that the paragraphs numbers don't display in ``Safari`` (in ``Chrom`` the post looks fine). (more) |
— | almost 2 years ago |
| Edit | Post #287762 | Initial revision | — | almost 2 years ago |
| Question | — |
Is there a "regular" quasi-convex function $f:\Bbb R^2 \to \Bbb R$ that is not a monotone transformation of any convex function? Question > Can you find an example of a differentiable quasi-convex function $f:\Bbb R^2 \to \Bbb R$ that is non-degenerate, but there does not exist any strictly increasing $\phi:\Bbb R \to \Bbb R$ such that $\phi \circ f$ is convex? >> Definition. We say that $f$ is non-degenerate iff $f'(x0)=... (more) |
— | almost 2 years ago |
| Edit | Post #287761 | Initial revision | — | almost 2 years ago |
| Answer | — |
A: How can we grow this community? I'm new to math.codidact, and I'm relatively new (1 month) to MSE. I discovered this site after I found about how SE lacks respect to the community. Let me share my experience with this site. Cons 1. This is kind of a cosmetic detail, but the very thing that stroked me when I visited the si... (more) |
— | almost 2 years ago |
| Comment | Post #286926 |
Just look into any undergraduate level book on ODEs and you will find lots of examples. Or check wikipedia: https://en.wikipedia.org/wiki/Differential_equation#Examples. (more) |
— | almost 2 years ago |
| Edit | Post #287756 | Initial revision | — | almost 2 years ago |
| Question | — |
Is there a two variable quartic polynomial with two strict local minima and no other critical point? > Does there exist a degree 4 polynomial $p:\Bbb R^2 \to \Bbb R$ that has two strict local minima and no other critical point? This is the same as this question rock-star, except for that I'm only interested in quartic polynomials instead of general functions $f:\Bbb R^2 \to \Bbb R, C^\infty$. ... (more) |
— | almost 2 years ago |
| Suggested Edit | Post #286961 |
Suggested edit: Summarized the question. (more) |
helpful | almost 2 years ago |
| Edit | Post #287755 |
Post edited: |
— | almost 2 years ago |
| Edit | Post #287755 | Initial revision | — | almost 2 years ago |
| Answer | — |
A: Is $f(x)=\sin(x)$ the unique function satisfying $f'(0)=1$ and $f^{(n)}(\Bbb R)\subset [-1,1]$ for all $n=0,1,\ldots$? This is not a complete answer, but only an attempt for it. It should not be surprising that considering the specific form $f(x)=k\sin(jx+y)$ , the condition $f'(0)=1$ fixes value of all the 3 paramters $k,j,y$: Since $1$ is the maximum value $f'(x)$ is allowed to attain, it must be that $y=0$ (o... (more) |
— | almost 2 years ago |