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Hello everyone, what is the usual way to "like" a mail in the maillist and subscribing to the thread ?

By sending a message it adds me to the "Participants" in the webapp which is neat (I can then search for my messages)

I could do it in the webapp but not everybody will see it

Le mer. 19 mai 2021 à 17:02, David Lowry-Duda david@lowryduda.com a écrit :

To frame the problem, let us try to solve the equation x ** 2 == 1/2 using sympy:

`>>> from sympy import Eq, solve, symbols, S >>> x = symbols("x") >>> solve(Eq(x**2, S(1)/2)) [-sqrt(2)/2, sqrt(2)/2]`

that worked well, but actually we would like to write the last line

simply as

`>>> solve(x**2 == 1/2)`

This is essentially how this would be written in sagemath (a CAS exposing various FOSS math software behind a unified python-based interface). More about sagemath can be found at https://www.sagemath.org/

In sage, this would be written

`solve([x**2 == 1/2], x)`

The additional "x" is because sage also accepts things like

`y = var('y') solve([x**2 == y], x) # solve for x in terms of other variables`

Large amounts of sage are written in python, including essentially the whole symbolic mathematics stack. I'm personally content with using a CAS like sage when I want to manipulate mathematics and keeping symbolic math separate from my default python interpreter.

- DLD

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