I'm delighted with your additional paring. Loving complex numbers, I mention that you have accepted them if you have accepted Format! You could still delete their utilities.
I would keep Square Root. About the only reason I included _: was that its entry documents constant"_ . Your closing comment is excellent. Excellent! --Kip Sent from my iPad On Mar 15, 2013, at 1:03 PM, Raul Miller <[email protected]> wrote: > On Fri, Mar 15, 2013 at 1:43 PM, km <[email protected]> wrote: >> Here's a shot at specifying a J core by deleting things from the Vocabulary >> page. > > Here are some of my opinions: > >> = • Equal =. Is (Local) =: Is (Global) >> < Box • Less Than <. Floor • Lesser Of (Min) <: Decrement • Less >> Or Equal >>> Open • Larger Than >. Ceiling • Larger of (Max) >: Increment • Larger >>> Or Equal > > Core J does not need decrement, nor increment - you can use -&1 or +&1 > >> _ Negative Sign / Infinity _. Indeterminate _: Infinity > > Core J does not need indeterminate, nor should it need constant > functions. You can use constant"_ for example. > >> + Conjugate • Plus +. Real / Imaginary • GCD (Or) +: Double • Not-Or > > Core J should probably ignore complex numbers (this also discards some > later verbs). They are useful but not that useful. Double and Not-Or > can also be ignored. I'd also discard boolean operations. > >> * Signum • Times *. Length/Angle • LCM (And) *: Square • Not-And > > The only core element on this line is, I think: Times > >> - Negate • Minus -. Not • Less -: Halve • Match > > I'd ignore Halve. > >> % Reciprocal • Divide >> %: Square Root • Root > > I'd ignore %: > >> ^ Exponential • Power ^. Natural Log • Logarithm ^: Power (u^:n u^:v) >> $ Shape Of • Shape >> $: Self-Reference > > I'd ignore ^. and $: > >> ~ Reflex • Passive / Evoke ~. Nub • ~: Nub Sieve • Not-Equal > > I'd ignore nub sieve and evoke. > >> | Magnitude • Residue |. Reverse • Rotate (Shift) > ... >> : Explicit / Monad-Dyad >> :: Adverse > > I'd ignore Adverse (it's rarely used, and for good reason) > >> , Ravel • Append ,. Ravel Items • Stitch ,: Itemize • Laminate >> ; Raze • Link >> ;: Words >> >> # Tally • Copy >> >> ! Factorial >> !: Foreign >> / Insert • Table >> /: • Sort >> \ Prefix >> \: • Sort >> >> [ Same • Left [: Cap >> ] Same • Right >> { • From {. Head • Take {: Tail • >> } • Amend (m} u}) }. Behead • Drop }: Curtail • >> >> " Rank (m"n u"n) ". Do • ": Default Format • Format >> >> >> @ Atop @. Agenda @: At >> & Bond / Compose &. &.: Under (Dual) &: Appose > > I'd ignore &.: and @: and &: - they are convenient but unnecessary. > Similarly, I'd ignore {: and }: - we are trying to give the beginner a > simpler to learn vocabulary. > > u@v is equivalent to u@(v"_) for example. > >> ? Roll • Deal ?. Roll • Deal (fixed seed) > > I'd ignore ?. > >> a. Alphabet a: Ace (Boxed Empty) >> b. Boolean / Basic > > I'd ignore b. > >> e. • Member (In) >> E. • Member of Interval >> >> i. Integers • Index Of i: Steps • Index Of Last I. Indices • >> Interval Index >> j. Imaginary • Complex > > I'd ignore i: and j. > >> NB. Comment > > I'd also be hard pressed to find an application which used all of > these, which was suitable as an illustration for beginners. > > That said, rather than trying to define a comprehensive "core > vocabulary" I'd be interested in a concept like "J material for > beginners should begin with a vocabulary pertinent to that essay". > > FYI, > > -- > Raul > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
