To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure email@example.com
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
We consider directed figures defined as labelled polyominoes with designated start and
end points, with two types of catenation operations. We are especially interested in codicity
verification for sets of figures, and we show that depending on the catenation type the question
whether a given set of directed figures is a code is decidable or not. In the former case we give a
constructive proof which leads to a straightforward algorithm.
Email your librarian or administrator to recommend adding this to your organisation's collection.