If you know what a number mod two different primes is (3 and 2) in this case, how can you tell what the mod is of the two products?
If you know what a number mod two different primes is (3 and 2) in this case, how can you tell what the mod is of the two products?
uname -r and available linux-headers- packages do not match How do I make the panko bread stick to my egg-coated chicken? Showing that if the center of a group is trivial, then the center of its automorphism group is trivial What's the reasoning behind the delete:1 restriction for only content I own? I recently reached 10k reputation on Stack Overflow, and noticed that I now have the ability to view deleted posts with deleted:1 via the search bar. I'd like clarification as to why the restriction exists that prevents me from searching through all deleted posts?  I feel like this would be beneficial for several reasons:   , a bot that was designed to detect spam,  to help fight spam. Having deleted:1 as an option could offer a second link to show the amount of true positives, to determine if it's worth adding to a blacklist. In , the domain v-play.net was deemed as "Too many FP's". Having a check to see how many TP's there may be, may outweigh the number of false-positives, and would give a better view. Bots are currently unable to view deleted posts through the API (Even if the linked user account/API user has >10k reputation). I think that this is partially because of this restriction. I had brought it up , because I thought that having SmokeDetector log a (non-caught) rude/abuse or spam posts would be beneficial, so that we could adapt our methods to catch these types of posts in the future.  was posted earlier today. I remembered it was similar to another post I came across, but was unable to find it because . Being able to search deleted posts would have allowed me to catch this behavior, and bring it up to the mods (I was lucky that someone else had a link for it, and we were able to advise the user what to do in the future). As a member of , I come across a lot of posts that are borderline spammy (via ) which I have a vague recollection of seeing before. Instead of flagging as spam, I usually vote NAA as to not nuke a user, but by being able to search deleted posts for that user, I can see if he is habitually continuing to post links to his product/service, and flag for custom moderation attention in case.   Overall, I think it would add a lot more visibility that could be helpful in bringing problematic issues to dimaond moderator attention, something that was specifically mentioned in :     Make sure what is being deleted should have been deleted, and bring unnecessary or harmful deletions to the attention of the community and/or moderator team.   Additionally, I think that deleted:1 is almost useless in the current state it's in. If the restriction exists that I can already view my own deleted posts, why shouldn't it be available to all users (If it's limited to one's self), as I can already view my own deleted posts? Plain integer partitions of $n$ using $r$ parts Division of number $n$ on parts $a_1,...,a_r$ where $a_1 \le ... \le a_r$ we call a plain if $a_1 = 1$ and $a_i - a_{i-1} \le 1$ for $2 \le i \le r$. Find enumerator (generating function) for plain divisions.  my try  The hint was to use bijection between plain divisions and some commonly know enumerator. I tried to use enumerator of divisions on different parts: $$ (1+x)(1+x^2)...(1+x^r)$$ where number of plain divisions is  $$[x^n](1+x)(1+x^2)...(1+x^r) $$ let function  $$f(n,r) = [x^n](1+x)(1+x^2)...(1+x^r) $$  For some first divisions it works. For example: $$f(4,3) = 1 $$ $$f(6,3) = 1 $$ $$f(11,5) = 2$$ But when I tried to find bijection, I failed. I found that this function isn't correct because $f(15,6) = 4$ but should be equal to $3$ because: $$15 = 1,1, 2, 3, 4, 4 \\ 15 = 1, 2, 2, 3, 3, 4\\ 15 = 1, 2, 3, 3, 3, 3 $$. There I stucked. Irrationals: A Group? I understand that the set of irrational numbers with multiplication does not form a group (clearly, $\sqrt{2}\sqrt{2}=2$, so the set is not closed). But is there a proof or a counter-example that the irrationals with addition form (or do not form) a group?  Thank you!  Edit: In particular, I am wondering if the set is closed with respect to addition. Akhil showed that the  is the same as the continuum, using as a step the observation that continuous functions that agree at rational points must agree everywhere, since the rationals are dense in the reals.  This isn't an obvious step, so why is it true? I have a bunch of SD cards that do not have the little plastic switch for the read only setting. so Windows thinks it’s write protected or something. The card is not write protected by the software lock present on the SD card standard.  I’m using one with tape over the notch and it’s ugly. Also, the Thinkpad slot drags on the tape all the time so I’m afraid it will might loose in there eventually.  So, is there any way to tell Windows to ignore this lame write-protect feature?  I’m not interested on the SD card itself as it’s irrelevant for the issue at hand. Read this question as being about a 5.25” floppy disk drive instead of an SD card if you wish. I’m pretty sure the Windows settings are the same for both, really.  I’m  that there are 3 ways to secure an SD card. I’m talking about only the mechanical switch, which is the responsibility of the host to handle. How can I add a bookmark in my nautilus folder explorer When reading lens reviews on the Internet, I often find subjective statements about the image quality that a lens produces, such as "good contrast" or "sharp". The problem is that I don't think I am capable to actually see these qualities on an image. I don't even think I could tell the difference between a cheap kit lens and a top lens, if not by "this just looks better".  So my question is: without looking at sharpness tests and MTF curves, how do you learn to judge the quality of a lens based only on sample images? What are the characteristics you look for and what constitutes good or bad in each of them? Question about the Euclidean ring definition I recently came across the following definition for a euclidean ring:  There exists a function $g:R\to\Bbb N_0$ with the following properties:  1.) $\forall x,y \in R$ with $ y \neq 0$ there exist $q,r \in R$ with $x = qy + r$ where $r=0$ or $g(r) &lt; g(y)$.  2.) $\forall x,y\in R\setminus\{0\}$ we have $g(xy)\ge g(x)$  What I don't understand, is the point of the second requirement. I have seen definitions where this is not a requirement. What does 2.) achieve?   Thanks very much I've been writing in English for many years, but there are certain recurring issues that come up in my writing, which I can't seem to resolve permanently. Primarily I have a problem with punctuation. In my native language, commas are very commonly used. One would place a comma to separate any portion of the sentence that serves a specific grammatical role. At least, this is the case according to the rules I was taught in school. I can see when I write in English that there are extraneous commas, but I can't always figure out which ones, and why. When dependent clauses require commas, when do they allow them, and when are they definitely incorrect? I have a virtual instance of redhat running that I can ssh to from any host on the corporate network.  My ssh session was dropped while running some scripts that may or not have caused me to disconnect.  The who command locally still lists the dropped connection. Reconnecting with ssh starts a whole new session.  Is there a way to connect to the original session?  If not can I kill it?  I have root and physical access.  I was not using screen in the original session. Is $\le$ defined by $\langle 𝑥_1, 𝑦_1 \rangle \le \langle 𝑥_2, 𝑦_2 \rangle$, if $𝑥_1 \le 𝑥_2 \land𝑦_1 \ge 𝑦_2$ a linear order? I need to tell if the relation $\le$ defined by relationship $\langle 𝑥_1, 𝑦_1 \rangle \le \langle 𝑥_2, 𝑦_2 \rangle$, if $𝑥_1 \le 𝑥_2$ $\land$ $𝑦_1 \ge 𝑦_2$ linear order?   I have already proven that the relation is an order, but I need to decide if it is a linear order and why. Thanks for any help! C# object references and Action types What is the reason behind "non-static method cannot be referenced from a static context"? How can I wrap text around a bottom-right div? The number of different ways to choose $k$ out of $n$ unique items The number of different ways to choose $k$ out of $n$ unique items:   Without repetition and without order-significance: $\binom{n}{k}=\frac{n!}{k!(n-k)!}$ Without repetition and with order-significance: $\binom{n}{k}\times k!=\frac{n!}{(n-k)!}$ With repetition and with order-significance: $n^k$ With repetition and without order-significance: $?$   Thank you! This is my code:  import datetime today = datetime.date.today() print(today)   This prints: 2008-11-22 which is exactly what I want.  But, I have a list I'm appending this to and then suddenly everything goes "wonky". Here is the code:  import datetime mylist = [] today = datetime.date.today() mylist.append(today) print(mylist)   This prints the following:   [datetime.date(2008, 11, 22)]   How can I get just a simple date like 2008-11-22? What is the difference between class and instance attributes?