I have two URLs: http://ent.example.com and http://www.example.com/ent/. Both of them are mapped to my server path /www/ent.   I am very confused, how would this affect my SEO as far as Google is concerned? If two URLs are pointing to the same path, would Google consider this cheating?
This is a general, community wiki question regarding duplicate content.  If your question was closed as a duplicate of this question and you feel that the information provided here does not provide a sufficient answer, please open a discussion on .     What does Google consider to be duplicate content? Will the way I am presenting my content result in a duplicate content penalty? How can I avoid having my site's content treated as duplicate content?
Will Windows 10's reset delete my Linux partitions? The product of a normal and Rademacher variables, independent from each other Let $X\sim N(0,1)$ and let $Z$ be a random variable independent of $X$ such that:  \begin{equation} \Pr(Z=z) = \begin{cases} \frac{1}{2} &amp; \mbox{if $z = -1$ or $z=1$}, \\ \\ 0 &amp; \mbox{otherwise}. \end{cases} \end{equation}   Define $Y = ZX$. Show that $Y \sim N(0,1)$. Determine $\operatorname{Cor}(X,Y)$. Are $X$ and $Y$ independent?   Progress:  I'm basically stuck at the beginning. I got as far as $P(ZX &lt; y) = P(Z &lt; y/X)$, which I'm not even sure is correct. I'm also not clear on what it means by defining $Y = ZX$ - does it mean I need to state the probability density function or something? And how do I show that $Y \sim N(0,1)$? Choice of personal pronoun in single-author papers Is the trio's Polyjuice escapade in Chamber of Secrets ever discovered? Repeating something with (1/n)th chance of success n times Can I store all the content of my previous iPhone in a new iPhone using iTunes? Lorentz Invariant Integration Measure We want to show that if $a,b\in G$ where $G$ is a finite Abelian group, we have  $\operatorname{LCM}(|a|,|b|) = |ab|$ given that $ab \neq e$.   How I approached this question was by saying let $\operatorname{LCM}(|a|,|b|) = L$. Then if we show that $L$ divides $|ab|$ and $|ab|$ divides $L$ then $|ab| = L$. Showing that $|ab|$ divides $L$ was fine. But then I am having trouble with the second part that is showing $L$ divides $|ab|$. For this, so far I have:  Consider $(ab)^{|ab|} = e = a^{|ab|}b^{|ab|} $  since we know $a \neq b^{-1}$ by assumption then we can conclude that $|a|$ divides $|ab|$ and $|b|$ divides $|ab|$. We know that $L = \frac{|a||b|}{\operatorname{gcd}(|a|,|b|)}$ from here can we conclude that $L$ divides $|ab|$? Need to understand parallel query execution error Today we experienced a degradation in performance on our production sql server.  Durring the time this occurred we logged several "The query processor could not start the necessary thread resources for parallel query execution" errors.  The reading that I've done suggests that this has to do with how many CPUs to use when executing a complex query.  However when I checked during the outage our CPU Utilization was only at 7%.  Is there something else this could be referring too that I haven't come across yet?  Is this a likely culprit of the performance degradation or am I chasing a red herring?  My sp_configure values for this are as follows:  name                                minimum maximum config_value run_value cost threshold for parallelism      0       32767   5            5 Is "89.9%" singular or plural? Why is a subgroup with the index of 2 normal to the group?  I believe it has something to do with it being half and having nowhere to go. Product of two random variables that has exponential distribution Texture disappear on joining Has the speed of light changed over time? Could someone judge my (stoner) hypothesis that the speed of light has changed over time -- i.e. as the universe has expanded in volume light has slowed down, perhaps going so far as back to the big bang when it was infinitely fast and there was no time because everything happened at once etc. Thinking that the speed at which information can propagate through the universe is linked to the size of it seems intuitive to me. My question -- is there an easy disproof of this? Would Einstein have to be wrong? Does it violate anything supposedly more fundamental such as quantum or string theories? Do any current experiments invalidate it? If not can you show me in any case why you think its unlikely.   Edit 8/24  I'm accepting Mark M.'s answer but will post this here because there is a character limit on comments  @Mark M thanks, good answer but as someone who has only read some popular physics, and should leave this to the experts, I'm still muddled in my personal theory. I don't see why you should need two units to measure the speed of light. The thing I have a hard time wrapping my head around is the relation of time and distance. They seem like they could fundamentally be the same thing. If you say time is measured fundamentally by the vibration of so and so quantum object in space... why can't we just measure that vibration distance as the constant... I'll repeat myself to try to be clear... there is a certain minimum distance that particles have to go to interact with each other... if it wasn't vibrating there wouldn't be time,its what creates the illusion of time...so instead of talking about speed or c as distance/time.... can't we simply talk about that distance a quantum object vibrates....I'll lead up to my point.....perhaps there can need be only one constant here, and that is the physical size of the universe. a tiny metal tuning fork doesn't appear to be vibrating at all but if you blew it up to the size of the empire state building the metal rods would move from window to window. perhaps as our universe expanded in size the length of that minimum vibration (perhaps infinite at point zero) would have expanded, and therefore created the illusion of time and the speed of light, which, as the universe expands, will continue slowing down. perhaps we are like a big balloon and we have been blown up and all the fields/particles-without-size are vibrating more and more in that space.. am i missing something obvious here? Share your experiences on exploring iOS 7 with us..  Whether you found hidden or little-known feature of iOS 7 or can explain how a big feature makes a difference, we're looking for objective reports of how the new OS affects your workflow.  Also provide details on how to achieve that feature, and if possible, include a relevant image too (hold Home and Lock for a screenshot on your iOS device).    Please post one tip per answer. Please also check to see if your answer has already been posted - duplicate answers will be deleted in favour of the original answer on any given topic. To search answers for this question use inquestion:101382 (or inquestion:this, directly from the question page) in addition to your search terms in the search box in the upper right hand corner of this page. How to find a starting point for root finding in complex plane? The function $f(x) = x^2 +1$ has zeros in the complex plane at $x = +i$ and $x = -i$. Is there a real starting point for complex Newton's method such that the iterates converge to either of these zeros? Is there a complex starting point too?  I know that Newton's method for finding roots is $x_{n+1} = x_n - \frac {f(x)}{f'(x)}$. But I don't know how to find the proper starting point. I noticed the other day when serving the public that when asking for something, people were saying "Can I get an xyz, please". The previous time I had such a job it was "Could I have an xyz", or "May I have..." if they were being very polite.  Does anyone know when this trend started and what caused it? Generalized mean value theorem I know and understand the mean value theorem. But at the moment I don't have the intuition to understand the generalized mean value theorem     If $f$ and $g$ are continuous on the closed interval $[a,b]$ and differentiable on the open interval $(a,b)$, then there exists a point $c\in(a,b)$ where$$[f(b)-f(a)]g'(c)=[g(b)-g(a)]f'(c).$$If $g'$ is never zero on $(a,b)$, then the conclusion can be stated as$$\frac{f'(c)}{g'(c)}=\frac{f(b)-f(a)}{g(b)-g(a)}.$$   What is the intuition? And how can you prove this (generally) ? We have a few Win32 applications (coded in Delphi 2006) where sometimes the user gets an error message saying "System Error. Code: 8. Not enough storage is available to process this command.".  From the stacktrace it looks like it is always during CreateWnd call  Main ($1edc): 004146cc +070 app.exe SysUtils               RaiseLastOSError 00414655 +005 app.exe SysUtils               RaiseLastOSError 004ce44c +130 app.exe Controls               TWinControl.CreateWnd 00535a72 +022 app.exe cxControls             TcxControl.CreateWnd 004ce82a +016 app.exe Controls               TWinControl.CreateHandle 00553d21 +005 app.exe cxContainer            TcxContainer.CreateHandle 00586ef1 +005 app.exe cxEdit                 TcxCustomEdit.CreateHandle 005c331d +005 app.exe cxDropDownEdit         TcxCustomDropDownEdit.CreateHandle 004ceaf0 +074 app.exe Controls               TWinControl.UpdateShowing 004ceb1e +0a2 app.exe Controls               TWinControl.UpdateShowing 004cebdc +03c app.exe Controls               TWinControl.UpdateControlState 004d118a +026 app.exe Controls               TWinControl.CMVisibleChanged 004cb713 +2bb app.exe Controls               TControl.WndProc 004cf569 +499 app.exe Controls               TWinControl.WndProc 004b727d +4c1 app.exe Forms                  TCustomForm.WndProc 004cb3a0 +024 app.exe Controls               TControl.Perform 004c9f6a +026 app.exe Controls               TControl.SetVisible 004b6c46 +03a app.exe Forms                  TCustomForm.SetVisible 004baf1b +007 app.exe Forms                  TCustomForm.Show 004bb151 +14d app.exe Forms                  TCustomForm.ShowModal 007869c7 +0d3 app.exe UfrmPrice      770 +19 TfrmPrice.EditPrice 0078655d +009 app.exe UfrmPrice      628  +0 TfrmPrice.actNewBidExecute 00431ce7 +00f app.exe Classes                TBasicAction.Execute 004c2cb5 +031 app.exe ActnList               TContainedAction.Execute 004c397c +050 app.exe ActnList               TCustomAction.Execute 00431bb3 +013 app.exe Classes                TBasicActionLink.Execute 004af384 +090 app.exe Menus                  TMenuItem.Click 004b059f +013 app.exe Menus                  TMenu.DispatchCommand 004b16fe +082 app.exe Menus                  TPopupList.WndProc 004b164d +01d app.exe Menus                  TPopupList.MainWndProc 004329a8 +014 app.exe Classes                StdWndProc 7e4196b2 +00a USER32.dll                     DispatchMessageA 004bea60 +0fc app.exe Forms                  TApplication.ProcessMessage 004bea9a +00a app.exe Forms                  TApplication.HandleMessage 004becba +096 app.exe Forms                  TApplication.Run 008482c5 +215 app.exe AppName        129 +42 initialization   I've never been able to get to the bottom of what causes this and as it happens fairly seldom I haven't been to concerned, but I would like to find out what causes it and hopefully rectify it...  EDIT: Full Stacktrace  EDIT 2: More info... The client who experienced this today has had my app installed for about 4 months and it is running on his PC 8 hours a day. The problem only appeared today and kept reappearing even though he killed my app and restarted it. None of the other apps on his system behaved strangely. After a reboot the problem goes away completely. Does this point towards the heap shortage that Steve mentions?  EDIT 3: Interesting msdn blog post  and  on the topic of the desktop heap. Though I'm not sure whether this is the cause of the problem it certainly looks likely. What does "--" (double-dash) mean? I have seen -- used in the compgen command.  For example:  compgen -W "foo bar baz" -- b   What is the meaning of the -- in there?