![]() However, there is an option to add a custom language with user defined syntax (UDL). Unfortunately, the Calcpad language is not natively supported by Notepad++. Some features that worth mentioning are:Īnd and last but not least – syntax highlighting. Currently, its text editing capabilities significantly exceeds those of the Calcpad own editor. You can also edit HTML, XML, CSS, JSON and other types of files. It supports many different programming and scripting languages. You have to use Html to insert them.Notepad++ is one of the most popular and free text/code editors. Unlike text fields, they are not generated automatically. Add some images, compile again, and you will get a nice and friendly input form, like the one bellow: Advanced Html formsīesides text input fields, Calcpad allows more advanced UI elements like selection lists, radio buttons and checkboxes. If you insert #post before “Geometrical properties”, you will hide the remaining contents during the input phase. #show – the contents will be visible in both phases. #hide – the contents will be hidden in both phases #post – the contents will be visible only in results phase #pre – the contents after the current line will be visible only in input phase For that purpose, Calcpad provides you with special switches to specify what to be visible on each stage: ![]() Probably, you may not want to see all this uncalculated output during the input. Once in input mode, you can enter the input data safely and run the calculations by pressing F5. You will have to press again F4 or toggle the same button back to unlock it. The source code will be hidden and not accessible anymore. You will get the following result:Ĭalcpad will display the uncalculated Html output, where all question marks are replaced by input fields. Then, press F4 or the “ Compile to input form” button (on the left of the “ Run” button) to generate the form. Here is the code: CollatzCheck(k n) = $Repeat kN But lets give it a try and hope to be lucky ).įor that purpose, we will create a short program in Calcpad. It is quite unlikely to succeed because most probably the conjecture is true. No one managed to do that till now, but it doesn’t mean that we cannot try as well. It is enough to find just one number that contradicts the conjecture, and we are ready. A detailed explanation of the problem is provided in this YouTube video:Īctually, it is much easier to disprove the Collatz conjecture than proving it. So, it works like magic and no one in the world knows exactly why. It may get trapped into an infinite cycle or simply diverge to infinity. ![]() It is still possible that some larger number exists, that will fail to comply. So far, they haven’t found a single number that contradicted the conjecture.īut in math, this does not prove anything. Some curious people have tried this for all integers up to 10 20 (at least) by using computers. This is equivalent to the following series:Ĭollatz stated that whatever starting integer k 0 > 1 you take, you will end up with calculating 1. Do the same with the newly calculated value and so on. It sounds very simple, and it is hard to believe that no one has managed to prove it so far: Pick a random integer > 1. It is named after the German mathematician Lothar Collatz (1910 – 1990), who invented it. The Collatz conjecture is one of the most interesting and still unsolved problems in mathematics.
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