I need to change my bibliography name in &quot;Bibliografia essenziale&quot;, I have tried that but it doesn't work \documentclass[a4paper, oneside, openright]{article} \pdfpagewidth\paperwidth \pdfpageheight\paperheight \usepackage[utf8]{inputenc}  \usepackage[italian]{babel} \usepackage[T1]{fontenc} %usepackage{lipsum} \usepackage{lmodern} \usepackage{graphicx} \usepackage{indentfirst} \usepackage{amssymb} \usepackage{amsmath}  \usepackage{latexsym} \usepackage{amsthm}  \usepackage{caption} \usepackage{eucal}  \usepackage{eufrak}  \usepackage[hidelinks]{hyperref} \usepackage{verbatim} \usepackage{mathtools} \usepackage{mathrsfs} \usepackage{enumerate} \usepackage{pgfplots} %\usepackage{lipsum} \usepackage{wrapfig} \usepackage{float} \usetikzlibrary{intersections} \tikzset{point/.style={insert path={node[circle,inner sep =1.5 pt,fill]{}}} } \usepackage{listings} \usepackage{color}  \theoremstyle{plain}  \newtheorem{thm}{Teorema}[section]  \newtheorem{cor}[thm]{Corollario}  \newtheorem{lem}[thm]{Lemma}  \newtheorem{prop}[thm]{Proposizione}   \theoremstyle{definition}  \newtheorem{defn}[thm]{Definizione}  \theoremstyle{remark}  \newtheorem{oss}[thm]{Osservazione} \newtheorem{esem}[thm]{Esempio}  \title{\begin{huge} \textbf{...} \end{huge}} \date{\vspace{-5ex}} \author{...\\ ...}   \begin{document} \maketitle  ...  \vspace{1 cm} \nocite{*} \bibliographystyle{alpha} \bibliography{Bibliografia} \renewcommand{\refname}{Bibliografia essenziale}  \end{document}  This is my file Bibliografia.bib @book {Bhatia,     AUTHOR = {Bhatia, Rajendra},      TITLE = {Matrix analysis},     SERIES = {Graduate Texts in Mathematics},     VOLUME = {169},  PUBLISHER = {Springer-Verlag, New York},       YEAR = {1997},      PAGES = {xii+347},       ISBN = {0-387-94846-5},    MRCLASS = {15-02 (47-02)},   MRNUMBER = {1477662}, MRREVIEWER = {R. J. Bumcrot},        DOI = {10.1007/978-1-4612-0653-8},        URL = {https://doi.org/10.1007/978-1-4612-0653-8}, }  Can someone help me?
Is there a way to rename (or do away with the name of) the bibliography page that is output using BibTeX?  If so, is the name dependent on the bibliographystyle, or is it something inherent within the BibTeX functionality?
Find the infinite sum $\sum_{k=1}^{\infty}\sqrt k - 2\sqrt {k + 1} + \sqrt {k + 2} $ I am facing a problem, where I have to find the partial sum of a sequence/sum and with that, the infinite sum of the sequence.  $\sum_{k=1}^{\infty}\sqrt k - 2\sqrt {k + 1} + \sqrt {k + 2} $   The problem here is that I don't know how to proceed. I would be thankful if someone would steer me in the right direction. Where is the preferred place to set the PATH envvar?  ~/.profile or /etc/environment?  What is the case when PATH is set in both places? Is the end result a concatenation of both values set in those two places? Get the image URL I want to render an image as a background image via an inline style in twig. I created a field called bg_image and attached it to the standard plain page.  After fiddling around for hours I was able to get the Image URL in node.html.twig  {{ file_url(node.field_bg_image.0.entity.uri.value) }}   but I could not get it to work inside field--field-bg_image.html.twig  Can I get the node from there anyhow, so I can then get the image?  How can I get the image URL to use as inline style? I thought maybe I can pass a variable from field--field-bg_image.html.twig to image.html.twig and then just render  {{ uri }}   instead of  &lt;img{{ attributes.addClass(classes) }} /&gt;   but I could not get it to pass the variable there unless I use includes  {% include 'image.html.twig' with {'image': image, 'isFromField': isFromField} %}   (isFromField is true, when it comes from the field--field-bg_image.html.twig) But that didn't work either. The Image was never rendered that way.  Would be very glad if you can help - my php knowledge is very basic. Thanks Why is polynomial regression considered a special case of multiple linear regression? If polynomial regression models nonlinear relationships, how can it be considered a special case of multiple linear regression?  Wikipedia notes that "Although polynomial regression fits a nonlinear model to the data, as a statistical estimation problem it is linear, in the sense that the regression function $\mathbb{E}(y | x)$ is linear in the unknown parameters that are estimated from the data."  How is polynomial regression linear in the unknown parameters if the parameters are coefficients for terms with order $\ge$ 2? Is there an official rule that the minimum damage can't be negative? A slightly humorous thought occurred to me (a recovering rules lawyer) after reading .     "None of the answers actually specify that 0 is the minimum damage."   Logically it wouldn't make sense for an attack to apply negative damage or healing, except in specific cases like hitting a flame elemental with a fire attack. Ruling that you could do negative damage would lead to an exploit to avoid costs of healing. As such I highly doubt any DM would make such a ruling. I definitely wouldn't except for the most absurd and humorous of games were failure is the expected result not success.  Another possibility (as suggested by Secespitus) is that negative damage would reflect back on the attacker. This could be seen as punching a strongman so hard (or in just the wrong way) as to injure your own hand.  This would also play well in a failure is the only option game, and if there is a rule suggesting that it would be an appropriate answer to this question as well.  Take the case of a person with less than 8 Strength, no levels in monk, and does not have a tavern brawler.  Would they do -1(1 - 2) damage on unarmed strikes? If so what would the result of the negative damage be?   "Healing" the target because such a puny hit actually raises their fighting spirits and makes them more capable of fighting Reflective Damage, the attacker actually takes 1 point of damage, representing injury to his hand or other damage   I am curious to know if there is an official rule stating that the minimum damage an attack can do is 0 or is there something in the damage calculation that I am missing that would otherwise prevent negative damage? easy_install: command not found Is it appropriate to use the salutation "Dear All" in a work email? I have observed that in my work place, whenever a mail is sent to more than one person( like an information, meeting request or a notice etc.), the mail starts with the salutation "Dear All". This, somehow, doesn't seem correct to me. For me, a salutation should address the reader individually, at least in its singular form, as in "Dear Colleagues".  Am I correct in thinking that? Why is $L^1(\mathbb{R}^n) \cap L^2(\mathbb{R}^n)$ dense in $ L^2(\mathbb{R}^n)$? Prove: $\displaystyle\sum_{k=1}^n k k!=(n+1)!-1$ (preferably combinatorially)   It's pretty easy to think of a story for the RHS: arrange $n+1$ people in a row and remove the the option of everyone arranged to height from shortest to highest, but it doesn't hold up for the LHS.   Alternatively, trying to visualize the LHS, I noticed that it's like a right angle tetrahedra:  1  2!+2!  3!+3!+3!  ...  But it doesn't help to see a connection to the RHS.  Note: no integrals or gamma function nor use of other identities without proving them nor generating functions. Permanently removing apache2 How to remove items from a list while iterating? Taxonomy terms view sorting results numerically I have a taxonomy that's comprised entirely of numeric term names, 1 through 1200 (with a few numbers missing in between). I created a new "Taxonomy terms" view to show all terms in this vocabulary. When I look at the view results, I'd like to see the terms sorted numerically, however the view is displaying the terms alphabetically. I understand the reason for this is because term names are strings, but I'm hoping someone has an answer of how to make the query treat the term names as integers.  Here's an example of the view results as they are displayed now:   1 10 100 1000 1001 1005 101 1014 1015 1016 1019 102 1020 1024 103 1034 104   Normally in MySQL, you could write SELECT name FROM {taxonomy_term_data} ORDER BY CAST(name AS UNSIGNED). Is there a way to get this same type of CAST() happening in views? "Screaming" noise while steaming milk? What are some typical LuaTeX gotchas? Circuitikz symbols in TikZ circuit library Some time ago, I asked about . wh1t3 wrote: "However, as far as I know there is nothing the circuitikz package does that the TikZ circuit library can't."  So if it is true that the tikz library is more powerful, how do I get all the symbols described in the  using the TikZ circuit library?  Especially I am missing the symbols for ammeters and voltmeters. Combinatorics riddle: keys and a safe There are 8 crew members, The leading member wants that only a crew of 5 people or more could open a safe he bought, To each member he gave equal amount of keys, and locked the safe with several locks.  What's the minimal number of locks he should put:   at least 5 crew members would be required to open the safe? Any team of 5 crew members could open the safe, but none of the 4 team crew members.   1,2 stands individually of course. How to derive variance-covariance matrix of coefficients in linear regression My local hackerspace has a CNC machine.  I can give them my Gerbers and they can print out the PCB.  The machine does not plate VIAs.  I need to do this after the CNC machine is finished.  What is the best process and materials to use? Where to download Chrome 32bit? Google has  so on a 32bit Debian machine it's not possible anymore to update the APT repository:  W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release  Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)   Also has the .deb file removed from Google servers as it seems.  Is there any alternative .deb download of the last release (46?) available somewhere?  Reason: For an automated Debian build system (debootstrap-based) I urgently need a way to install Google Chrome 32bit v46 (or similar). Switching to another browser (including Chromium) is not a quick enough option for me at the moment.. Other than cost, is there a reason to not use higher rated components than called for by design?