TT I have a bit of an obsession with Prime numbers, and wrote a program to list numbers and the number of divisors they had. It was quite illuminating.
My favourite number was the smallest number divisible by 1, 2 , 3, 4, 5, 6, 7, 8,, 9 and 10 I would like to annotate each number with things learned about each number. Thus I think a way to take a function and use it to annotate numbers would be helpful, for example compute the Squares and flag each number tiddler with a field square=squareroot (Previous square). Overtime one could accrue a great resource. If done to a standard people could share there functions. Tiddlywiki also provides various ways to display or graph tiddlers. Regards Tony On Sunday, 13 October 2019 23:32:12 UTC+11, @TiddlyTweeter wrote: > > TonyM > > Further to my last an obvious fact is that outside maths conversion > "standards" -- where for instance base-12 counts "... A, B, 10 ..."---a lot > of everyday usage is "dual based". For instance "10, 11, 12" inches. And 12 > inches IS 1 foot. > > This actually corresponds to how most people have counted through history > where "the turn" is dual. And counting is in "cycles" that transfer > (optionally) to a different base at the "turns". So 3 feet IS 1 yard, but > remains 36 inches too etc. As such they are both "based" and "un-based". > And you could say "2 foot & 12 inches" and still be understood that its 1 > yard. > > Just observations > TT > > On Sunday, 13 October 2019 13:17:52 UTC+2, @TiddlyTweeter wrote: >> >> Ciao TonyM >> >> FYI I'm interested in the confluence of social (including historial) >> counting and calculation. >> >> I find some of the widespread European decimal based (metric) systems >> poor compared to the other base systems still widely used in UK & USA for >> measures. >> For instance ... >> >> - inch (12=1) foot (3=1) yard (220=1) furlong >> - ounces (16=1) pound (14=1) stone >> - nautical miles / knot >> - Fahrenheit v Centigrade >> >> Historically there emerged all sorts of mixed-bases for practical >> calculation, many still in use. >> >> WHY so? is a very interesting question. But comes down to the fact the >> world is not divided into any particular system, rather the physical >> attributes of a social context fostered different bases of calculation >> matched to different ways of "carving it up" conceptually. >> >> Being able to think in different bases is particularly useful. >> Since programmers can often think in other than base-10 (binary, octal & >> hexadecimal are obvious cases) it might be interesting for them too to play >> the social aspect, where "formal" calculation hits social praxis? >> >> A good example is "a baker's dozen" (base-13). Its a case where needed >> utility built on from (base-12) maths. Another example is how nautical >> miles are related to longtitude & latitude. >> >> This is somewhat different than looking within math itself as a >> self-referential world with interesting patterns to find & enjoy for their >> own sake. Also of great merit. >> >> Just thoughts. >> TT >> >> TonyM wrote: >> >>> Folks, >>> >>> Join our Collaborative Project -* Numbers* >>> >>> Recent collaborative discussions and illustrated some interesting >>> methods and challenges for our community. Words and Numbers. >>> I thought I would initiate a couple to stimulate activity from the >>> community, join in and contribute if you can otherwise lurkers are fine. >>> >>> *AIM: *Develop and improve the ability for people to interrogate large >>> number lists with TiddlyWiki. Allow each number to be annotated with >>> relationships to other numbers. >>> >>> *Inspiration: *Whatever your relationship to numbers, every number >>> small or large has its own qualities, do you have a favorite number?, did >>> you know the difference between 0 and one is either 1 or infinity?, Do you >>> know about the beauty in the primes?, and that most of the common numbers >>> 12 in a dozen, 24 hours a day, sixty seconds/minutes in a minute/hour and >>> 360 degrees are all some of the most divisible numbers? >>> >>> - Let us stick to the counting numbers - integers to start with. >>> - Let's have a way to annotate numbers with info we can share, >>> manually, programmatically or by import >>> - Learn more about numbers >>> - Build various number related algorithms in Tiddlywiki >>> - Identify primes, Squares, special number sequences >>> - Find what sequences fit within other well known sequences >>> >>> Large lists present possible performance issues, Numbers can stay in a >>> single data tiddler, or generated in a list until you make a single tiddler >>> once you wish to add information to a given number. Canned search strings >>> that may interest people would also be fun, like reoccuring palindromes.. >>> >>> *Where do we start?* >>> >>> - The best way to build a list of numbers and add annotations to >>> each as desired >>> - How do we best generate them? Look them up? >>> - How do we annotate numbers (eg if a number has the field prime it >>> is a prime number) >>> - What code would identify and flag which numbers are prime, can it >>> restart without returning to 1 if you extend you number set further? >>> - Provide an easy to use way to list numbers with a shared nature, >>> without necessarily re-computing >>> - How to we share new number annotations and relationships we can >>> add to our own list in a non-destructive way >>> >>> Lets get started Numberphiles. >>> *A person who is a lover of numbers.* >>> >> -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. 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