What is the difference betwen > and >> in Unix Command?
What's the difference between using > and >> in shell?
$\Delta U$, $C_p$, $C_v$ for an ideal gas process Reason for Subject-Verb Inversion: Only in cases where A is B, shall the Company do X Has the Doctor’s memory been reset? At the end of The Time of the Doctor, it is shown that Matt Smith has received an entire new regeneration cycle and using it he regenerates into Peter Capaldi. Capaldi's first question to Clara is about how to fly the TARDIS. Does this mean there has been a memory reset for the Doctor?  If so, has he forgotten his true name?  If he has forgotten his true name, then he can't bring back the Time Lords now can he? Is a quotient group a subgroup? Is a quotient group a subgroup?   I am trying to solve the question below, and if the answer to above is "yes," then my proof will follow below.   I am trying to prove that a cyclic group G, has a cyclic quotient group G/N.  Where N is a normal subgroup.  A SUBGROUP OF A CYCLIC GROUP IS CYCLIC.  By   So if   (1) G is cyclic   (2) G/N is a subgroup   (3) G/N is a cyclic subgroup   (4) The Quotient group G/N is cyclic   I am unsure about my reasoning in step (2), Is this a valid assumption? C# Settings.Default.Save() not saving? Is there a way to show statistic info? Is there a way to get Statistic info in Blender? Or heads up display? Like when I select a group of vertices, I need a way to know how many vertices are selected and How many polygons "or triangles my scene has. Lately I see a blue screen of death a lot and want to know why it appears. Where should I gather the information so the problem can be diagnosed best? Couldn't find anything in C:\Windows\Logs. Can I see a list of gyms I left a pokemon at? I captured a gym today just before the servers went down. I am wondering if I lost my progress. Is there a way to see if I own a gym or not? Checking my understanding: $1 - 1 + 1 - 1 + 1 - ... = \frac{1}{2}$ I've recently run into a proof that claims that $1 - 1 + 1 - 1 + 1 - 1 ... = \frac{1}{2}$ that proceeds as follows:     Let $S = 1 - 1 + 1 - 1 + 1 - 1 + ...$. Then $$S = 1 - (1 - 1 + 1 - 1 + 1 - 1 ...) = 1 - S$$ Therefore, $2S = 1$, so $S = \frac{1}{2}$. QED   I was under the impression that this sum doesn't converge, and therefore this step of the proof is invalid:     Let $S = 1 - 1 + 1 - 1 + 1 - 1 + ...$   That is, it's not even valid to suppose that the sum is equal to some (implicitly real or complex) number $S$, and therefore the reasoning that follows is meaningless because $S$ doesn't exist and therefore has any properties we want it to have.  Is the reasoning I've given above correct? That is, is it correct for me to claim that the proof fails because $S$ doesn't exist?  (I've heard that there are techniques for evaluating divergent integrals by using complex analysis and Taylor series, so perhaps there's another way to prove that the summation is $\frac{1}{2}$; I just wanted to see whether my reasoning is sufficient to explain why this particular proof is incorrect. If the proof actually is correct, then I stand corrected!)  Thanks! The following question is on my homework assignment that I cannot figure out:     Let U and V be independent random variables, each having a normal distribution with mean zero and variance one. Find the moment generating function of the random variable W = UV .   I have looked around online, and cannot find an answer to this question. In fact, the only answers I can find that even relate to the product of standard normal random variables are using techniques that we never covered in my class. We covered in class how to find the MGF for linear combinations of random variables, by W isn't linear, its a product of two normals. So that technique won't work.   What am I supposed to do? I am completely at a loss. I have tried multiplying the MGFs of U and V together, but that leaves me with something ugly that I can't reduce. How can I re-enable backspace navigation in Chrome? map collections I am new to Apex and just starting to understand using maps to avoid loops within loops and hitting limits. My trigger below updates opp line items with the internal cost from another object using a map and the one value - "Service_Name".  My issue is I need to update another field on the Opp line item with "Agent Fee" in the same way  - but there are 4 criteria to get the right Agent Fee from another object. I cant see how do so this other than have a loop of agent Fees object with the opp line loop? How else can I do this? Is it possible with Maps ?  trigger sectortest on Opportunity (after update) {          for (Opportunity eachopportunity : Trigger.new){                                        //Get costs for the Opps FY and put in map         List&lt;Internal_Costs__c&gt; costs = [SELECT Id, Financial_Year__c, Service_Name__c, Standard_Cost__c  FROM Internal_Costs__c WHERE Financial_Year__c =: eachopportunity.Financial_Year__c];          Map&lt;string, Decimal&gt; costmap = new Map&lt;string, Decimal&gt;();         for (Internal_Costs__c eachcost : costs){                                         costmap.put(eachcost.Service_Name__c, eachcost.Standard_Cost__c);                         }                 //Get Line Items for Opp         List&lt;OpportunityLineItem&gt; opplines = new List&lt;OpportunityLineItem&gt;();           opplines = [SELECT Id, DS_Status__c, Country__c, Product2Id, UnitPrice FROM OpportunityLineItem WHERE OpportunityId =: EachOpportunity.Id];           List&lt;OpportunityLineItem&gt; opplinesupdate = new List&lt;OpportunityLineItem&gt;();                //assign cost to line items              for (OpportunityLineItem EachOppline : opplines) {                                                                                              decimal cost = costmap.get(EachOppline.Service_Name__c);                                                                 EachOppLine.Internal_Cost__c = cost;                                                                             opplinesupdate.add(EachOppline);                                                                                                                                                        }              update opplinesupdate;                        }                       } Where is the .Trash folder? How to cook a pork sirloin roast? I picked up a pork sirloin roast yesterday, it's a little over three pounds.  I've never cooked one of these before and I am not sure what to do.  My seasoning plan is salt, pepper, thyme, and rosemary, and I might poke a couple holes for cloves of garlic as well.  My cooking plan is 8+ hours in the crock pot on low, with about an inch of water in there.  Will this turn out OK?  I'd like a tender and moist result, obviously.  Any tips would be greatly appreciated. Let $s_n$ be a sequence defined as given below for $n \geq 1$. Then find out $\lim\limits_{n \to \infty} s_n$.   \begin{align}   s_n = \int\limits_0^1 \frac{nx^{n-1}}{1+x} dx  \end{align}  I have written a solution of my own, but I would like to know it is completely correct, and also I would like if people post more alternative solutions. Can a JavaScript object have a prototype chain, but also be a function? function a () {     return "foo"; }  a.b = function () {     return "bar"; }  function c () { }; c.prototype = a;  var d = new c(); d.b(); // returns "bar" d(); // throws exception, d is not a function   Is there some way for d to be a function, and yet still inherit properties from a? Prove: $\lim\limits_{n \to \infty} \int_{0}^{\sqrt n}(1-\frac{x^2}{n})^ndx=\int_{0}^{\infty} e^{-x^2}dx$ I'd like your help with the following claim to prove:  $$\lim_{n \to \infty} \int_{0}^{\sqrt n}\left(1-\frac{x^2}{n}\right)^ndx=\int_{0}^{\infty} e^{-x^2}dx.$$  I think I should use the claim:     Let $a,b$ two real numbers and $\{f_n\}$ a sequence of continuous functions on $\left[a,b\right]$  which converges uniformly to $f$ on $[a,b]$. Then    $$\lim_{n\to\infty}\int_a^bf_n(t)dt=\int_a^bf(t)dt.$$   But for this, I must prove that $(1-\frac{x^2}{n})^n$ uniformly converges to $e^{-x^2}$.  How do I do that? One of the hardest and trickiest things to do is to prove this uniformly converges.. every function has its own way. I believe that the more examples I'll see the easiest it will be. Thanks again! Using "answer your own question" to advertise completed open source project? etags and other tags The  tag is a synonym of , and has the description     A program to generate tags for a large project. These tags are usable by the Emacs text editor.   This is inconsistent: tags in that sense are always plural, i.e. etags, never etag.  evidently refers to another concept, .  Should  remain a synonym of , and be about HTTP Etags, and should Emacs etags be tagged +? Or should the synonym be unmade, with HTTP Etags on  and etags on ? Post Link for Tag Info Wiki's display text should be better than "unknown" The displayed text for a [Post Link] where the underlying Id corresponds to a Tag/Info Wiki (where the link redirects successfully) is just &quot;unknown&quot;. For example, if you've ever edited a tag wiki: . It would be nice if this could be better identified.