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I am trying to understand how to derive the time evolution for the reflection coefficient in the setting of inverse scattering for the 1d cubic NLS $ $ iq_t + q_{xx} = 2|q|^2 q. $ $ Setup. [Mostly following Deift-Zhou.] Given a function $ q=q(x)$ , one studies the scattering problem $ $ \partial_x \psiRead more

I’ve developed a function to calculate the exit angle of a projectile after it collides with a boundary/edge inside a rectangular space, based on the entry angle and the axis it is colliding with. Given those two factors, the actual boundary is implied, since a projectile travelling at an angle of 315° (where 0°/360° sitRead more

Jan 24 15:40:56 web named[30214]: client 72.44.81.59#43591: view external: query (cache) ‘neucept.com/SOA/IN’ denied Jan 24 15:40:57 web nam… | Read the rest of http://www.webhostingtalk.com/showthread.php?t=1693705&goto=newpostRead more

We have a class with 10 attributes (longs, Strings) the following method should change any attribute to any value of an object specified by the client, it mimics the SQL update statement “Update Users Set username = ‘newValue’ where id = 5″ the user will provide the 4 variables “id =5” to find the objectRead more

Here’s a scenario I’ve encountered variations of on many occasions. Imagine an XML feed which displays data about three different types of event: concerts, plays and movies. Each has a different set of parameters. We want to scrape this information and store it for our own purposes. So we create a database which has applicationRead more

Classical reflection principles have the general form $ \phi \rightarrow \exists \alpha \ V_\alpha \vDash \phi$ ; their strength, as is well known, depends on what language one allows for $ \phi$ . The first-order case is provable, the second is Bernays-Lévy reflection, and it has a minimal model in $ V_{\delta^2_0}$ , where $Read more

Cantor’s Attic is a really great website for the various descriptions of large finite numbers, large countable ordinals, and large cardinal axioms. However, after looking through the archives of the website, I have found that originally, the following cardinals were included and never given a definition: Grand reflection cardinals Universe cardinals Weak universe cardinals TheRead more

I am trying to get my head around using EventSubscriber for adding HTTP Headers. In D7 I would have simply used drupal_add_http_header(‘Content-Type’, ‘application/javascript’); But I see that this is now deprecated in D8. I have been hunting on Google for hours and it seems I need to use EventSubscriber now. My understanding of the EventSubscriberRead more

I got into a conversation with a coworker and we talked about reflection in PHP language. I insisted that instantiating instances of class using variable variables syntax like following is a reflective technique. <?php $ className = ‘Animal’; $ animal = new $ className; My coworker differed in opinion. I did extensive google search andRead more