Opened 12 years ago
Last modified 12 years ago
#9829 new enhancement
Implement implicitly multiplied output
Reported by: | Mitesh Patel | Owned by: | William Stein |
---|---|---|---|
Priority: | major | Milestone: | |
Component: | user interface | Keywords: | |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
With implicit_multiplication(True)
, we can enter expressions using spaces instead of *
to separate multiplied subexpressions:
sage: var('x, y, z') sage: implicit_multiplication(True) sage: 3 x^4 y + 2 z sin(x z 3 y) - 3 y^2 3*x^4*y - 3*y^2 + 2*z*sin(3*x*y*z)
This works similarly for polynomials.
But it's not yet possible to set an option so that Sage automatically postparses the output to multiply implicitly. For example,
sage: R.<a,b,c> = QQ[]; R Multivariate Polynomial Ring in a, b, c over Rational Field sage: implicit_multiplication_output(True) # not implemented! sage: R.random_element() 1/7 a b - 1/4 a c - c^2 + c
Ideally, we would be able to use the output in later inputs with little or no modification.
AskSage question (by me).
Note: See
TracTickets for help on using
tickets.
See source:/sage/misc/preparser.py@13719#L1209 for the input transformation.