Sympy doesn't simplify expression

[Anton Makarov]

Hi, i have an expression:

expr = sympify("asinh(2)+sqrt(5)-oo")

When i try to simplify this expression:

expr_simplified = simplify(expr)

I get:

print(expr_simplified)

// -oo+asinh(2)

However, if i use the expression:

"asinh(2)+sqrt(5)+oo"

after simplification, i get:

"oo" - as it should be.

I think there is an error in sympy code, simplify function doesn't simplify expression to the end.

What you think about it?

[Chris Smith]

I get a worse result:

>>> simplify(asinh(2)+sqrt(5)-oo)
0
>>> simplify(asinh(2)+sqrt(5)+oo)
oo

[Антон Макаров]

What version of sympy did you use? I use sympy 1.11.

Отправлено из мобильной Почты Mail.ru

четверг, 16 марта 2023 г., 18:43 +0300 от smi...@gmail.com <smi...@gmail.com>:

I get a worse result:

>>> simplify(asinh(2)+sqrt(5)-oo)
0
>>> simplify(asinh(2)+sqrt(5)+oo)
oo

On Sunday, March 12, 2023 at 6:55:50AM UTC-5 antonv...@gmail.com wrote:

Hi, i have an expression:

expr = sympify("asinh(2)+sqrt(5)-oo")

When i try to simplify this expression:

expr_simplified = simplify(expr)

I get:

print(expr_simplified)

// -oo+asinh(2)

However, if i use the expression:

"asinh(2)+sqrt(5)+oo"

after simplification, i get:

"oo" - as it should be.

I think there is an error in sympy code, simplify function doesn't simplify expression to the end.

What you think about it?

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[SOUVIK CHAKRABORTY]

 𝚒𝚗𝚜𝚝𝚊𝚕𝚕 𝚜𝚢𝚖𝚙𝚢==1.6

𝙸𝚗𝚜𝚝𝚊𝚕𝚕 𝚝𝚑𝚊𝚝 𝚊𝚗𝚍 𝚝𝚑𝚎𝚗 𝚜𝚒𝚖𝚙𝚕𝚒𝚏𝚢! 

To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/1678999183.734953062%40f707.i.mail.ru.

[Anton Makarov]

Sympy 1.6 is an old version.

How to fix these errors? What is the mechanism? I need to open an issue on github?

пятница, 17 марта 2023 г. в 05:24:23 UTC+3, souvikchak...@gmail.com:

[Chris Smith]

I opened issue #24928 for this.

/c