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I’m relatively new to universal algebra, but it seems that lots of theorems from specific algebraic theories (groups, rings) can be stated in the context of universal algebra, perhaps I’m wrong. Examples being Jordan-Holder, Lasker-Noether, Hilbert Nullstellensatz (maybe not?) and many more, where one can talk about sobobjects, and congruences instead of “subgroups” and “ideals”.Read more

https://www.economist.com/news/science-and-technology/21734379-no-guts-no-glory-fundamental-physics-frustrating-physicists It’s like how atheists use the same tired arguments. Like they say, “I don’t believe in God because I don’t think Jonas could live in a whale’s belly for three days”, even though God is all-powerful and can make anything He wants happen.Read more

The paper “Cotorsion theories for abelian groups” by L. Salce, was published in 1979 in Symposia Math. 21, pages 1-21. According to Google Scholar, it’s been cited 233 times, and I keep seeing citations of this paper as fundamental to cotorsion pairs. But I can’t find it anywhere online, or in my library. Any helpRead more

I deleted my previous question because the reactions of my previous question was bad It’s because the definition of terms were not clear. It was my fault, I know, I’m sorry about that. so, what i really want to ask is If i want to calculate the movements of each individual moving objects driven byRead more

How many Bitcoin attacks are known for the end of 2017? For to understand the security of cyber wallet we all try to know. How it is possible to attack this system and what damage it will be cost.Read more