Nice one, Simon ! I'm sorely tempted to mark is as "best answer":-)...
But I wont, because I tend to think that, as long as we are insisting on explicit creation of symbolic variables, restricting the use of automatic declaration to the (old) (deprecated) Sage notebook and continue to make noises about its deprecation, we cannot accept this and remain consistent. We should either: 1. raise an error if the arguments of a symbolic function are not yet existing in the name space, or 2. automatically create undeclared variables as symbolic variables (as in Maxima, Mathematica und so weiter...). My laziness would make me prefer 1) if having being burned already wasn't strongly pushing me towards 2... Of course, there is another solution : to note that these arguments are just placeholders (as the integration variable of an integrand), and treat the as *local* variable of a function creating the neede symbolic function : he function affects local symbolic variables as the value of these local symbols, creates the function and returns it, he local symbolic variables dying with the end of the function... But, whereas this would be (damnably 'of course, given the context :-)) easy to do in Lisp or anything having lazy (or delayed) evaluation, I do not see how to do this in Python. Le mercredi 20 mars 2019 09:37:18 UTC+1, Simon King a écrit : > > Hi Henri, > > On 2019-03-19, henri....@gmail.com <javascript:> <henri....@gmail.com > <javascript:>> wrote: > > What is the difference between virginal conception and immaculate > > conception ? > > "Virginal conception" in the context of Christian dogmatics concerns how > Jesus was conceived. "Immaculate conception" concerns how Jesus' *mother* > was conceived. Thus, two totally different things. > > Namely, the dogma of immaculate conception says that Mary was exempt > from the "original sin" (which for ordinary people is hereditary, but in > order to let Mary be able to give birth to God she needed to be free of > *any* sin, including the sins of Adam and Eve). > The dogma of "virginal conception" says that Mary conceived Jesus > although she was virgin. > > Best regards, > Simon > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
