Tag: Hobbies

Cinema Meets Culture: The Indian Diaspora and Their Movie Rituals | January 09 2026, 06:09

I noticed that there is a huge gathering of Indians in our cinema, and it turns out it’s because the cinemas and the local Indian diaspora have found common ground. Today there were 13 showings of The Raja Saab in three languages – Tamil (in which the film was originally made), Telugu, and Hindi. The genre is fantasy horror comedy. There were also two showings today of Parasakthi in Tamil and two of Sarvam Maya in Malayalam.

And it was men only. I googled why. Superstars like Prabhas (The Raja Saab) have huge organized fan clubs. In Indian culture, “premiere night” and the first morning sessions are the territory of hardcore fans – and they are predominantly young men. They come to make noise, whistle, dance in front of the screen, and shout various things during the show. Many Indian families and women prefer to avoid this “crazy” atmosphere of the first sessions, opting for calmer showings on Saturday or Sunday.

Why Snow Clings Only to One End: A Light Moment on a Heavy Day | December 05 2025, 20:28

Imagine how hard it is for me to live. Walking with the dog and you can’t easily and quickly answer your own question, why is the snow only on one end of the twigs. And yes, they all look in different directions.

Yuka’s Nostalgic Snowy Morning | December 05 2025, 13:43

Wow. Morning. Sleepy Yuka came in, looked out the window at the first snow, looked at me, sighed, and went to lie down in the little circle he loved so much in early childhood, but hadn’t noticed at all for the last few years.

The Maddening Ambiguity of Mathematical Notation | December 02 2025, 15:30

If someone tells you that mathematics is an exact science, don’t believe them. Since I’m currently into data science as a hobby, I’m studying all sorts of things from different books and my brain is exploding at how this can happen in a science where every little detail should fit into a system, otherwise it goes by the wayside. Until it gets to notations. It’s a complete mess there. A set of dialects.

Take, for example, common logarithms. The “standard” for how to denote a logarithm depends on which room of the university you are in. In calculus and number theory, log(x) almost always means the natural logarithm ln(x) with base e. The derivative of e^x equals e^x. It’s “natural”. They’re too lazy to write ln. Yet, where decimal logarithms might appear (like in computer science), log(x) suddenly becomes decimal, and ln(x) is based on e.

The expected value E has an argument in square brackets. Meanwhile, the same square brackets in computer science are used for the step function 0/1.

Or if you see a vector – is it a column or a row? In classical mathematics, a vector is always a column. To multiply it by weights, we write T after the vector and then w for the weights. But in many papers, vectors are thought of as rows. And if you see y = xW+b, then x is not a column, because otherwise the dimensions wouldn’t match up. x here is a row. But in the next paper they write Wx+b. And there x is a column 🙂

Angle brackets . For the dot product, the symbol “⋅” is used, but it is hard to see, especially on a whiteboard, and I very often see that mathematicians use angle brackets for dot product. In general, angle brackets are used for the generalized concept of inner product, where the scalar product is a special case. signifies a certain abstract way to multiply a and b and get a number. Meanwhile, in quantum mechanics this would be written as . And for the scalar product, some use a circle with a dot or x in a circle.

And just for the sake of it, in Russia tangent is tg, while in the USA it’s tan. There’s also tan^-1 and arctan, which are the same, though x^-1 generally means 1/x