An explicit verb can do anything computable. Almost all tacit verbs
cannot be analyzed to see whether calculus can be applied to them. The
calculus tools don't try.
Henry Rich
On 5/16/2021 6:22 AM, Thomas Bulka wrote:
Hi Forum,
I'd be happy about some information about the domain of
deriv_jcalculus_ from math/jcalculus. I assume that the dictionary
entry of former ddot (https://code.jsoftware.com/wiki/Vocabulary/ddot)
is at least basically correct for deriv_jcalculus_ since the removal
of ddot did not happen that long ago.
What I'd like to understand is, why deriv_jcalculus_ seems only to be
able to derive tacit verbs. For example ^&3 deriv_jcalculus_ 1 gives
3&*@(^&2) while {{y^3}} deriv_jcalculus_ 1 gives a domain error.
This is not problematic at all, but in order to learn J better I'd
like to understand, why deriv_jcalculus_ only handles tacit verbs.
Thanks in advance for any explanation and kind regards,
Thomas
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
--
This email has been checked for viruses by AVG.
https://www.avg.com
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
