expression.rweight.ipynb

Kernel: Python 3

expression.rweight(weight)

The right scalar product of an expression by a weight.

See also:

• automaton.rweight

• expression.lweight

• expression.multiply

Examples

import vcsn
c = vcsn.context('lal_char, q')

e = c.expression('<2>a<3>bc', 'trivial')
e

$\left\langle 2 \right\rangle \,a \, \left( \left\langle 3 \right\rangle \,b \, c\right)$

e.rweight(c.weight('4'))

$\left( \left\langle 2 \right\rangle \,a \, \left( \left\langle 3 \right\rangle \,b \, c\right)\right)\, \left\langle 4 \right\rangle$

Instead of e.rweight(w), you may write e * w.

e * c.weight('4')

$\left( \left\langle 2 \right\rangle \,a \, \left( \left\langle 3 \right\rangle \,b \, c\right)\right)\, \left\langle 4 \right\rangle$

You may even run the simpler:

e * 4

$\left( \left\langle 2 \right\rangle \,a \, \left( \left\langle 3 \right\rangle \,b \, c\right)\right)\, \left\langle 4 \right\rangle$