Lists union and intersecion

[arbiel]

Yes, those terms apply to mathematical entities, with the following meaning :

list1=['a', 'b']
list2=['c']

union (list1, list2) : ['a', 'b, 'c']
intersection (list1, list2) : []

>>> dia
['Dasia', 'Dialytika', 'Macron', 'Oxia', 'Perispomeni', 'Prosgegrammeni', 'Psili', 'Tonos', 'Varia', 'Vrachy', 'Ypogegrammeni']
>>> mots
['Greek', 'Small', 'Letter', 'Upsilon', 'with', 'Dialytika', 'and', 'Oxia']
>>>

intersection (dia,mots) : ['Dialytika', 'Oxia']

Arbiel