# symbolic expression

how to write symbolic expression over finite field

add a comment

symbolic expression

how to write symbolic expression over finite field

add a comment

0

You can not define, say a cosinus over a finite field, but you can define polynomials as follows:

```
sage: K = GF(7)
sage: K
Finite Field of size 7
sage: R.<x,y> = K[]
sage: R
Multivariate Polynomial Ring in x, y over Finite Field of size 7
sage: P = 1+x^2+x*y^3
sage: P
x*y^3 + x^2 + 1
sage: P.parent()
Multivariate Polynomial Ring in x, y over Finite Field of size 7
sage: P(2,3)
3
sage: P(2,10)
3
sage: P(2,10).parent()
Finite Field of size 7
```

Asked: **
2019-12-30 21:01:00 -0600
**

Seen: **57 times**

Last updated: **Dec 31 '19**

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.