What are the basics that one would need to master before studying organic chemistry? [on hold]

I know that nomenclature is very important, but what are the other basics? Things like, what elements are nucleophilic etc

All topic

What are the basics that one would need to master before studying organic chemistry?

I know that nomenclature is very important, but what are the other basics? Things like, what elements are nucleophilic etc

All topic

Question on basics: Getting signal strength between ESP8266s as APs and Arduinos

Apologies for the potentially newbie question, but I’m quite new to the ESP8266.

My end goal is to have several Arduino-ESP8266 pairs, and to have the Arduinos able to access the signal strength between the ESP8266s.

For example, I have two Arduinos with ESP8266s attached, and when the signal strength between them is too low, the Arduino will change the configuration of external relays.

Right now, my approach is to set the ESP8266s as Soft APs all on the same network. However, I’m struggling to understand how to connect the Arduinos when the ESP8266s are in Soft AP mode.

Has anyone linked their Arduino to a an ESP8266 as a soft AP before, and if so, could you point me in the right direction?

Thanks in advance!

All topic

Basics of Quadratic Sieve algorithm

I’m trying to understand Quadratic Sieve algorithm for integer factorization, I follow the description in the book “Prime Numbers” by Crandall and Pomerance, specifically the Algorithm 6.1.1. (Even though the question below apply to any description of QS, as far as I can see.)

Please, I have a few very basic questions about the method:

  • in the initialization phase one finds the square roots ($a_i$) on the number being factored ($N$) modulo some prime ($p_i$). But in the description the roots are never mentioned again, what are they good for?

  • sieve phase, this is possibly just me not understanding the text fully, that I should “sieve for $B$-smooth values”. I think it is possible to read the “smooth” word that I have to try all the primes up to the bound, but I think what is meant here that I only should try the primes having Legendre symbol equal to one, from the previous phase. (I try both and there was no difference..?)

  • why do I have to have $(K+1) times K$ matrix in the linear algebra step ($K$ is the number of primes found during the initialization)? I mean, if I got lucky I could end up having just three exponent vectors summing to zero vector so I assume it is because the algorithm uses linear algebra method to find the right subset, correct?

  • in the final step, what to do if the GCD does not reveal non-trivial factor? Simply compute more exponent vectors for the linear algebra step? Remove some of the already computed?

All topic

Learning modern MTT basics in limited time

I am a winning low-stakes live cash game pro with mediocre abilities. I have qualified for a day 2 of a big live tournament, with a well above-average stack. Day 2 starts in 5 days. (There is a TL;DR at the end.)

Many years ago, I had significant success in online MTTs. I would play a Harringtonian style early on, then move on to steals, 9X 3bet-Cbets from the blinds and Kill Everyone-style unexploitable resteals, occasionally experimenting with light 4bet shoves if the HUD warranted it.

I have mostly stopped playing MTTs since then. Whenever I decide to play one, I feel I am behind the game and getting outplayed frequently. People are raising small and calling, calling, calling. Everyone defends in the BB, then folds to a Cbet 1/3 of the pot. (‘Charging draws’ is no longer relevant.) Nobody bets more than half the pot, ever. Nobody calls a 3bet shove with AJ, ever. People are raise-folding and 3bet-folding all the time with ridiculously short stacks. Everybody seems to be concerned with stack preservation and extracting value from medium-strength hands, even at the expense of getting maximum value on strong ones.

I have watched some Twitch and experimented (online) with emulating this new small-bet style, floating OOP with backdoor draws etc and have had some success with it, but it was probably mostly luck and I didn’t really understand what I was doing.

A lot of modern MTT poker is unfamiliar to me.

So my question is this: given the limited preparation time, what can I do study-wise that has the greatest reward/effort ratio? I am not looking to become an excellent MTT player in four days. I am looking to understand the basics of current MTT play.

TL;DR: weaktight reshove monkey wants to get on speed with the basics of the modern MTT game in a few days. What should he focus on?

All topic