function vs expression

First time here? Check out the FAQ!

eyal
11 ●1

Hi there,

Is there a difference between, e.g.,

g=x^2

and

f(x)=x^2

In the literature the first is considered to be an expression while the other is a function, but checking their types gives

<class 'sage.symbolic.expression.Expression'>

in both cases.

Comments

Welcome to Ask Sage! Thank you for your question!

slelievre ( 3 years ago )

Sort by » oldest newest most voted

You should check their parent:

sage: g.parent()
Symbolic Ring

sage: f.parent()
Callable function ring with argument x

sage: f(x).parent()
Symbolic Ring

Please start posting anonymously - your entry will be published after you log in or create a new account.

1 follower

Asked: 3 years ago

Seen: 271 times

Last updated: Aug 29 '21