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Ask English Speaking

what is the intention and real purpose of writer in this context?

what is the intention of writer in this context? “does it say that assertions of that woman and mental position of those who heard them can destroy a serious and crucial investigation?” It is a curious psychological study, and equally curious is the mental attitude of the people who could imagine that the assertions of […]

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Ask English Speaking

Why are questions valid without question marks in speaking but not valid when writing?

In the case where I have What is the name of the fourth son. Without a question mark “?” in speaking it is considered a question but in writing it is not.

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Linux Mastering Development

Forcing apt update to re-download information

Is it possible to make apt update flush information/re-download information? apt update does not suggest any additional arguments when tab-tabbing in the CLI and returns with E: The update command takes no arguments when adding garbage to see what happens. Also, Debian’s apt man-page did not provide any helpful clues: https://manpages.debian.org/buster/apt/apt.8.en.html I made it work […]

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Android User Help

Folders become unknown, undeleteable file type. How to fix and/or delete?

I’m trying to re-organize and replace the music on my phone’s ext. SD card, but some of the folders have become some sort of unknown file type. In Windows, the properties window just says it’s file type is “File”. That’s it. I can’t delete, open, or move them (from my PC or in the phone […]

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Apple User Help

How to add a domain user MacOS

Is there a difference between new Mac: Create Admin + Configure Qualify new Mac in the domain Create New User with AD credentials in System Pref OR Add new User directly into AD with “Change User” with “Name” and “Password” Longer version: There is a a System Preference under Users > Login Options : Display […]

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Ask Games RPG Games

How can I improve my micro skills in League of Legends?

How can I improve my micro-skills in League of Legends?

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Ask Mathematics

Property of the linear closure of a vector space, Linear Algebra

I’m trying to test this curious property of the linear closure of a vector space( Property 6 of the attached image), I think we have to prove this equality: let $F\subset E$ let’s see that $E_{s}=\bigcap_{S\subset F} F$ indeed: Let $x\in E_s$ and $S\subset F$, since $x\in E_s$ then $x= \sum_{i\in \Lambda}\lambda_is_i$, $s_i \in S$ […]

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Ask Mathematics

Prove that $\operatorname{rad}R=\operatorname{Nil}(R)$ for $R=k[x_1, \dots, x_n]/I$

If $R=k[x_1, \dots, x_n]/I$, where $I$ is an ideal in $k[x_1, \dots, x_n]$ and $k$ is a field, Lam uses Hilbert’s Nullstellensatz to show that $\operatorname{rad}R=\operatorname{Nil}(R)$, but I can’t seem to apply the wikipedia (applied to $k[x_1, \dots, x_n]$) definition of Hilbert’s Nullstellensatz to show that $\sqrt{I}$ coincides with the intersection of maximal ideals of […]

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CMS Magento Mastering Development

magento 2.3.4 installtion stuck at 99% without error at Installing admin user

magento 2.3.4 installtion stuck at 99% without error at Installing admin user

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Mastering Development

Variable with extra small Pearson coefficient has bigger positive impact on ML model performance than variable with bigger Pearson

I made some machine learning models using Python scikitlearn library and I found some strange situation for me regarding real importance of some variables (features) to ML model. I found that variable which has smaller Pearson coefficient has higher importance on ML model (when exclude variable from model using backward elimination principle) than variables which […]