Hi Aron, Thank you very much, very appreciated. I am mainly want to construct a symbolic Sobolev inequality, so f is symbolic is fine at the moment.
On Friday, September 2, 2022 at 12:32:09 AM UTC+2 asme...@gmail.com wrote: > It depends on what you intend to do with the expression. If you're > only interested in having it print correctly, you can write a custom > function that defines LaTeX printing in the way you want (see > https://docs.sympy.org/latest/guides/custom-functions.html#printing). > For example > > class F(Function): > @classmethod > def eval(cls, p, f): > pass > > def _latex(self, printer): > p, f = self.args > _p, _f = printer._print(p), printer._print(f) > return r'\left | %s \right | {L^{%s}}' % (_p, _f) > > And use it like > > p, f = symbols('p f') > F(p, f) > > However, the issue here is that f isn't really a function, it's a > symbol. In SymPy it's currently not possible to represent Function > objects as symbolic objects (see > https://github.com/sympy/sympy/issues/4787). So if you want to later > use f as a SymPy function that you can call with other arguments, > you'll have to structure it differently. > > Aaron Meurer > > > On Thu, Sep 1, 2022 at 3:42 PM Yang Liu <mica...@gmail.com> wrote: > > > > I am trying to define a Sympy function $F(p,f)=|f|{L^p}$ symbolically. > So it take Symbol("p") and Function f and output is in latex form of > $|f|{L^p}$. Any idea of how to do it? > > > > Thanks a lot! > > > > -- > > You received this message because you are subscribed to the Google > Groups "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sympy+un...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/fb7bab86-69f5-49a2-9a49-73b1a03d033fn%40googlegroups.com > . > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/97e78b79-4323-4f2c-a8dd-30f7ecb69fbcn%40googlegroups.com.
