Which math book to choose as a reference / textbook?

Question

Mathematics

I study at a physics and mathematics school, sometimes it is necessary to study the material in depth for a better understanding, in physics I use Landsberg's textbook, in mathematics I tend to Fichtenholtz, but still I decided to ask which textbooks you used.

Answer 1

Good afternoon.
1) The magazine "Quantum".
kvant.mccme.ru
2) Series "Popular Lectures in Mathematics"
www.math.ru/lib/ser/plm
It is quite easy to find a book/article on a topic of interest.
This is precisely to deepen the school curriculum.

Answer 2

Vital! Join!
I can advise Simon Singh, for example, he has, for example, really good thoughts about Fermat's Theorem, but the only negative is the simplicity of the language at the level of teenage science fiction, my graduation essays and now almost forgotten "physicists are joking", so use this thing like a real textbook - utterly impossible.
You can read the habr - or is it not so cool for you?)