Viewing profile — bunje

How quickly do you think stopping the sanctions would bring the energy prices down? Russia already stopped gas exports to several countries.

In university I learned about the simplex method which can be applied to linear programming. I don't know if it's used by modern solvers.

I did software engineering for 3 years after graduation. Now I teach mathematics in a high school since '20. Software engineering was very stressful for me and I also wanted to syn…

"Mathematics is the part of physics where experiments are cheap." - V.I. Arnold

QR factorization is cool because it is part of QR iteration and you can use it to find all zeros of a polynomial at once.

Solutions to differential equations belong to infinite dimensional function spaces unless discretized.

I don't understand, there were over 50k non-covid deaths in the twice vaccinated and around 500 covid deaths. That sounds significant, or is it due to the age distribution of twice…

I think in the past journals prohibiting the use of preprint archives was more common.

How are the theories incompatible? My basic understanding is that GR describes how the space looks like and Standard Model describes fields defined in this space.

Colon cancer risk is increased by 28% due to excessive consumption of red meat.

I would guess that it is much more dangerous to modify a modern car because they utilize nontrivial shell geometry to improve the rigidity or to reduce weight. When I was attending…

I think variational problems are more naturally understood through energy minimization. You start with the energy of the system and try to minimize it via derivatives. Then you arr…

Finite differences are simple in cubes and domains that can be mapped to one. Not so much in an arbitrary tetrahedral mesh.

As a teacher, I'd like to use this in presentation slides, i.e. pause the output at specific times and continue only after a button is pressed. Does anyone know if there exists a t…

I cannot understand what you are implying. Can you be more specific?

Why is that?

I checked some of the references at CDC web page and seems that I won't die any time soon drinking one beer a day (male, non-smoker). E.g., https://pubmed.ncbi.nlm.nih.gov/26286216…

So you say we should specify when 2 means number two and when it means the constant function? How does it help?

I've analyzed performance data from air lubrication vessels with some retrofits included. Frankly, never witnessed over 5% gain. At specific velocity range the gain could be 5% on …

So you need a special editor to write code in Julia?

Currently my greatest concern is the inability of Julia to provide stability even after they've reached 1.0. On paper 1.0 is a LTS release and still supported, but how many package…

Yes, I agree. As a mathematician, I spend lots of time trying to find the correct definitions with only a rough idea what I'm trying to prove (the theorem).

You can accept a gift. It's also possible for someone to give a grant. But I'm not sure how they would work out in case of open source. I know that people write books using a grant…

Again, I'm not questioning that. Mathematically, does "tell people to use masks" imply "less new cases"? E.g., what if people decide to spend 5x more time with other people on aver…

It's explained in point two. We're talking about large quantities of people here. Technically mask blocks droplets. But if you tell everyone to use a mask, does it reduce transmiss…