Good sources of programming exercises for learning Mathematica programming?
Where can I find examples of good Mathematica programming practice?
Deciphering the RSA encrypted message from three different public keys I have three different 1024-bit public keys with common exponent $e$ but different moduli. A message $m$ is encrypted (without padding) using the three keys, which results in three different encrypted messages.  Given the three pairs of public keys $(N_i,e)$ and the encrypted messages $c_i=m^e\bmod N_i$ , how do I decipher the original message $m$ ? What is the 'rev' dropdown supposed to do? I only see this on sites where I don't have edit privileges, and only where there have been multiple revisions:        What exactly is this supposed to do?  Intuitively, I would expect it to change the text in the box to what it was at that revision, but it doesn't. And, if that's it, why only where I need to suggest edits? What young adult SF book is about a boy saved by aliens and domed colonies? How can I make my Photoshop text appear like it does on the web? Do I really have to design everything in Photoshop with anti-aliasing set to "none"?  I'm sure there is a better way.    I'd like to have a setting so that when picking a basic web-safe (such as Tahoma) in Photoshop so I can see what it will actually look like when on the web.  For example: The difference between Tahoma with anti-aliasing set to "crisp" in Photoshop and how it renders in Firefox is major.  It looks nice and smooth in Photoshop and looks like crap on the web.  Is there a anti-aliasing choice that is best to start with (that has the most similar outcome) when planning to have the content live on the web? Convert bytes to a string Cannot install Ubuntu in VirtualBox due to "this kernel requires an x86-64 CPU, but only detects an i686 CPU, unable to boot" error Fly and Two Trains Riddle How to use aes-encryption in PostgreSQL? Prior to doing some benchmarking work how would one free up the memory (RAM) that the Linux Kernel is consuming for its buffers and cache?    Note that this is mostly useful for benchmarking. Emptying the buffers and cache reduces performance! If you're here because you thought that freeing buffers and cache was a positive thing, go and read . The short story: free memory is unused memory is wasted memory. I'm trying to install Lubuntu on my laptop (sorta old 2005). [Laptop stats: Intel® Celeron® CPU 410 @ 1.46 GHz 1.47GHz, 448 MB of RAM]  I press Install and this message appears:   This kernel requires an x86-64 CPU, but only detected an i686 CPU.  Unable to boot - please use a kernel appropriate for your CPU.   What can I do to install Lubuntu on my computer? Why can't variables be declared in a switch statement? Is it acceptable to change the vid column of a term programmatically in the database? I need to move some terms from one vocabulary to another by retaining all their data: translations, aliases, and node references.  Is it acceptable to change its vid column value directly in the database? The terms don't have hierarchy relationships which needs to be handled. I have used the package nomencl. In my code I have incorporated the \nomenclature as well. But when I compile, it is not showing me any results. My code is :  \documentclass[pdftex,12pt,a4paper]{report} \usepackage{nomencl} \makenomenclature \begin{document} ---page numbering and other things included----- \include{symbols} -----others--- \end{document}   symbols.tex  \chapter*{NOTATIONS} \addcontentsline{toc}{chapter}{Notations} \nomenclature{$G_e$}{Equivalent Shear Modulus} \printnomenclature   Shall I use \nomenclature while explaining the chapter. Will It give me the same results? like  \documentclass[pdftex,12pt,a4paper]{report} \usepackage{nomencl} \makenomenclature \begin{document} ---page numbering and other things included----- \include{symbols} \include{chap3-calculate_w} -----others--- \end{document}   symbols.tex  \chapter*{NOTATIONS} \addcontentsline{toc}{chapter}{Notations} \printnomenclature   chap3-calculate_w.tex  \chapter{SETTLEMENT RESPONSE OF GEOSYNTHETIC REINFORCED GRANULAR FILL SOFT SOIL} \label{chap:W} \section{INTRODUCTION} In this thesis, the methodology to determine an  Equivalent single layer shear modulus \nomenclature{$G_e$}{Equivalent Shear Modulus},$G_e$ value for a...etc   I am not getting the output in both these. Can someone help me with this? If $x,y$ are positive reals such that $x+y = 2$ show that $x^3y^3(x^3+y^3) \leq 2$.   I thought about working backwards on this one. We can try to prove that $x^3y^3(x^3+y^3) \leq 2$ is true by first realizing that $x^3+y^3 = (x+y)(x^2-xy+y^2)$ and substituting in for $x+y = 2$. We then get $x^3y^3(x^2-xy+y^2) \leq 1$. How do I prove this is true? Sum of $k {n \choose k}$ is $n2^{n-1}$ When updating I got this error message:  W:Failed to fetch cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)/dists/oneiric/main/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs W:Failed to fetch http://ppa.launchpad.net/synce/ubuntu/dists/your_ubuntu_version/main/source/Sources  404  Not Found   What to do? Is it possible to use JSF+Facelets with HTML 4/5? What inspired Tauriel's story arc? I know Tauriel is a Jackson created character, but I wondered if anywhere in the legendarium there was fodder for the story arc between her and Kili.  I do not have access to all my books for the time being and recall stories of love between men and elves in the Silmarillion and Appendices but don't remember any such stories between elves and dwarves and wondered if there was any basis of inspiration for this aspect of their relationship within Tolkien's works.   This movie, of course, departs even further from the original than those made before it, but as a story unto itself, I can still appreciate the ride, so if there is no Tolkien basis, what inspired Jackson, Boyens, and Walsh to create this particular arc?  Is there interview info or anything? If $a_{ij}=\max(i,j)$, calculate the determinant of $A$ This is a followup to my question  . StrongBad, in a comment replying to one of my comments, suggested that I go ahead and ask something along these lines. This question is directed at those who have experienced unwelcoming behavior. I'm so confused over the nature of the unwelcoming behavior that others have alluded to. If I can't figure out what is happening because it gets deleted quickly, there's little I can do to work toward preventing future occurrences. What, specifically, can individuals in the community do to support those who have experienced gender bias? I'm asking you -- those of you who have experienced bias related to being LGBTQ or some other sort of gender bias. What do you want or need us to do so that you feel welcomed?  Are you looking primarily for greater awareness of the issues you commonly face? That is, there is nothing really that specific for us to do except to attend sensitivity training, show greater empathy, etc. Do you want us to be more vigilant in voting down and flagging unwelcoming content so that it gets deleted quicker? Are there a few specific users that you want to be &quot;taught a lesson&quot;, and the rest of us are caught up in the crossfire? Do you want us to proactively ask you for your pronouns or other biographical or identity details before we engage with you? (I apologize for accidentally misgendering Aza in my previous question, but there's nothing on her profile to indicate her gender or that she wants people to be particularly sensitive in this regard towards her. Perhaps I could have sent her a note &quot;Hey Aza, I'm going to reference you in an upcoming post, what are your pronouns?&quot;, but that seems so awkward.) Do you want help with lobbying Stack Exchange into making changes to the existing system such as adding support for adding pronouns, sexual orientation, etc. to user profiles?