Perhaps relevant: A new page on reducing ("solving") sets of inequalities
<https://docs.sympy.org/dev/guides/solving/reduce-inequalities-algebraically.html>
has recently been published to the dev version of the documentation.Jeremy Monat On Tue, Nov 1, 2022 at 7:03 PM Aaron Meurer <[email protected]> wrote: > This is currently only implemented in ask(), and you have to use > Q.positive(x) instead of x > 0 (ask does not yet know how to deal with > inequalities directly): > > >>> ask(Q.positive(z**2), Q.positive(z)) > True > >>> ask(Q.positive(z**2 + w**2), Q.positive(z) & Q.positive(w)) > True > > Aaron Meurer > > On Mon, Oct 31, 2022 at 1:10 PM Joseph Nasser <[email protected]> > wrote: > > > > Hello, > > > > I would like to check whether an inequality with multiple variables is > satisfied under certain assumptions on the variables. Is this supported? > Using refine seems to work with one variable but not a multi-variable > expression. I am using Sympy 1.11.1 > > > > from sympy import Q > > var('z w', real=True) > > refine(z**2 > 0, Q.positive(z)) # Returns BooleanTrue, expected behavior > > refine(z**2 + w**2 > 0, Q.positive(z) & Q.positive(w)) #does not return > a Boolean type > > > > Thanks > > > > -- > > 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 [email protected]. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/f0f91ba2-4432-419d-a832-9e43b5bd1b7en%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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CAKgW%3D6J4BzL%3DFn1iFj4pvygpu9zj0zhr7xQY7o%2BLTA4MtUYY6w%40mail.gmail.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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAO00iLjFYopHD1cdsWuVG%3D%2BeTpvhjWNFMHWfNfD1%3DLe%2BGTHc8g%40mail.gmail.com.
