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As described in Larcombe and Ridd, estimates for the percentage of published papers found to be reliable or reproducible in sciences such as biomedical science, have been as low as 50%, 25% and even 11%. My question is, in mathematics, what percentage of published papers are correct? Have any studies been done? Perhaps estimates couldRead more

In Moser’s famous paper harnack inequality for parabolic equations, he used the following simple Poincare inequality(Lemma 3) $ \int (f(x)-k)^2 w(x) dx \leq c(w) \int |\nabla f|^2 w(x) dx$ where $ k=\int f(x)w(x)dx / \int w(x)dx$ . The weight function $ w(x)$ is just a smooth axially decreasing cut-off function of compact support. Is thisRead more

Underlying problem In a case of a peer-to-peer discovery protocol,suppose we need to advertise peers in a manner that the network graph will grow such that we avoid cases of both too dense areas (e.g cliques) and too weakly connected areas (e.g bridge nodes).A node can also fail,disconnect, reconnect and update the list of peersRead more

I use PostgreSQL 9.6.6 on CentOS Linux 7.4 and after upgrading the postgresql-jdbc package – # sudo yum update Failed to set locale, defaulting to C Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.fra10.de.leaseweb.net * epel: mirror.wiuwiu.de * extras: centosmirror.netcup.net * updates: mirror.wiuwiu.de Resolving Dependencies –> Running transaction check —> PackageRead more

I have the following extension method to add themes support to my application: public static void AddThemes(this IServiceCollection services, Action<ThemesOptions> setupAction) { services.Configure(setupAction); } Where ThemesOptions is defined as: public class ThemesOptions { public IEnumerable<string> Themes { get; set; } } Now in my application’s startup ConfigureServices method I can say: services.AddThemes(options => { options.ThemesRead more

Sorry for newbie question. For example, there is some kind of abstract device, we will call the Device class and the tasks for it: Task1, Task2, Task3. For concreteness, I will describe everything in java codes. class Device { long id; String name; int ip; int filed1; String filed2; // and so on } classRead more

This is how we can find the WIF from a private key: private_key = ‘000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f’ decoded_private_key = bitcoin.decode_privkey(private_key, ‘hex’) wif = bitcoin.encode_privkey(decoded_private_key, ‘wif’) # 5HpHgWkLaovGWySEFpng1XQ6pdG1TzNWR7SrETvfTRVdKHNXZh8 But how to get the WIF compressed? Should I do: private_key = ‘000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f’ compressed_private_key = private_key + ’01’ wifcomp1 = bitcoin.encode_privkey(bitcoin.decode_privkey(private_key, ‘hex’), \ ‘wif_compressed’) # KwDidQJHSE67VJ6MWRvbBKAxhD3F48DvqRT6JRqrjd7MHLBjGF7V or wifcomp2 = bitcoin.encode_privkey(bitcoin.decode_privkey(compressed_private_key,Read more

needing some help setting up some tables and their foreign key constraints. 3 total tables: UserTable – contains: UserID Other Fields ShapeTable – contains: ShapeID UserID (from UserTable) Other Fields RecipientTable – contains: RecipientID UserID (from UserTable) A user is able to draw a shape, or many shapes. A user can also add potentially manyRead more

I am traveling within the U.S., but my boarding pass shows my first name and middle name joined as such: Firstmiddle instead of First Middle. How do I correct this, or is this something that shouldn’t be a problem with identification? I am already on hold with the airline to bring this to their attention,Read more

My 1st post, I don’t know the rules here yet. But this Q: 7 boys, 3 are identical clones. 7 girls, 2 are clones. Q: one of the non-clone boy is Kevin, how many ways can Kevin sit in a row so he is not next to a non-clone girl ? My A: total –Read more