How many $\sigma$-algebras on a $4$-element set $X$?
Number of sigma algebras for set with 4 elements
Change files with Editor that need sudo permissions I want to change files with KomodoEdit that need sudo permissions. I can't start KomodoEdit with sudo, though (for whatever reason). Can I somehow grant Komodo permission to edit those files (in particular I am talking about apache2 files and /etc/hosts)? What may happen after a stack of spells resolves? Within the same phase, once a stack of spells has resolved in its entirety, is priority once again given to a player so that more spells may be cast?  For example:  I attack with a creature. Opponent opts not to block. Now, I want to buff (e.g. +3/+3) my creature multiple times, but I'm afraid of my opponent responding with a burn (e.g. Deal 3 damage) spell at the top of the stack. Can I buff once, ask if opponent wants to respond, then allow the stack to resolve. Then, in the same phase, cast more buff? How to add horizontal cylinder at end of cube How do I split a string so I can access item x? Using SQL Server, how do I split a string so I can access item x?  Take a string "Hello John Smith". How can I split the string by space and access the item at index 1 which should return "John"? Let me use the following example to explain my question: public string ExampleFunction(string Variable) {     return something; }  string WhatIsMyName = &quot;Hello World&quot;; string Hello = ExampleFunction(WhatIsMyName);  When I pass the variable WhatIsMyName to the ExampleFunction, I want to be able to get a string of the original variable's name. Perhaps something like: Variable.OriginalName.ToString()  Is there any way to do this? Java Hashmap: How to get key from value? .NET String.Format() to add commas in thousands place for a number How to redirect output of wget as input to unzip? I have to download a file from this . The file download is a zip file which I will have to unzip in the current folder.  Normally, I would download it first, then run the unzip command.  $ wget http://www.vim.org/scripts/download_script.php?src_id=11834 -O temp.zip $ unzip temp.zip   But in this way, I need to execute two commands, wait for the completion of first one to execute the next one, also, I must know the name of the file temp.zip to give it to unzip.  Is it possible to redirect output of wget to unzip? Something like  $ unzip &lt; `wget http://www.vim.org/scripts/download_script.php?src_id=11834`   But it didn't work.      bash: wget   http://www.vim.org/scripts/download_script.php?src_id=11834   -O temp.zip: ambiguous redirect   Also, wget got executed twice, and downloaded the file twice. Fields finitely generated as $\mathbb Z$-algebras are finite? Suppose $k$ is a field that is finitely generated as a ${\mathbb Z}$-algebra.  (That is, $k$ is a quotient of ${\mathbb Z}[X_1,\dots,X_n]$ for some $n$). Does it follow that $k$ is finite? How to change Facebook username? 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What's the best way do do this?  if foo.py has changed:     unimport foo  &lt;-- How do I do this?     import foo     myfoo = foo.Foo() In what cases does the gerund stemming from a transitive verb take the direct object of that verb and when is a prepositional complement used?  For example:    Brown's deft painting of his daughter is a delight to watch (it is a delight to watch while Brown deftly paints his daughter). Painting his daughter is an outlet for his energy. Securing safety for prisoners is the main problem for the penitentiary system. The widely discussed problem of the securing of prisoners' safety was given priority. A number of times I have encountered in text-books and articles that neutrinos might contribute only a small fraction to dark matter. The reason has to do with the fact that if all of the dark matter consisted of neutrinos, then small-scale structures in the Universe could not have formed yet, because, as they say, neutrinos "wash out" small fluctuations. However, none of these texts provided a reference to any specific sources explaining in detail what is meant by "washing out". After all, neutrinos are notorious in their weak interaction with baryonic matter, so if there is a small-scale fluctuation of baryons, then how background neutrinos can prevent it from growing further if they practically do not interact with baryons? I guess the question boils down to calculating cross-sections of interactions at specific temperatures. I would appreciate comments and references to sources addressing this particular issue. Azure DNS does not lookup SPF policies for certain domains Bounded in Probability and smaller order in probability I was trying to think but cannot figure it out. For instance, if the interaction is small, for instance limited to a windows, the observers in each universe will see that the other goes in reverse. But what if they can start a more meaningful interaction? (for instance, if one observer crosses the window and moves to the other universe, will anything change? why and how fast? (at least at the beginning his thinking will move in the same time arrow than in his universe, but the physical processes around him will still violate the second law? How does $ \sum_{p<x} p^{-s} $ grow asymptotically for $ \text{Re}(s) < 1 $? Calling Non-Static Method In Static Method In Java