expression.add.ipynb

Kernel: Python 3

expression.add(exp)

expression + exp

An expression which denotes the sum (or disjunction) of both series.

Preconditions:

• None

See also:

• automaton.add

• polynomial.add

Examples

import vcsn
ctx = vcsn.context('lal_char, q')
exp = lambda e: ctx.expression(e)
exp('a*b') + exp('ab*')

$a \, {b}^{*} + {a}^{*} \, b$

Of course, trivial identities are applied.

exp('<2>a') + exp('<3>a')

$\left\langle 5 \right\rangle \,a$

exp('<2>a') + exp('\z')

$\left\langle 2 \right\rangle \,a$