label.multiply.ipynb

Kernel: Python 3

label.multiply

This function is overloaded, it supports these signatures:

• label.multiply(l)

  The product (i.e., the concatenation) of two labels: a.multiply(b) => ab.

• label.multiply(num)

  The repeated multiplication (concatenation) of an label with itself: a.multiply(3) => aaa.

Precondition:

• num must be nonnegative.

Examples

import vcsn
label = vcsn.context('law_char, q').label

Simple Multiplication

Instead of a.multiply(b), you may write a * b.

label('ab') * label('cd')

$\mathit{abcd}$

label('ab').multiply(label('cd'))

$\mathit{abcd}$

label('ab') * label(r'\e')

$\mathit{ab}$

Repeated Multiplication

Instead of a.multiply(3), you may write a ** 3.

label('ab') ** 0

$\varepsilon$

label('ab') ** 1

$\mathit{ab}$

label('ab') ** 3

$\mathit{ababab}$