Englishfor English speakers
invariance
—
noun
the nature of a quantity or property or function that remains unchanged when a given transformation is applied to it
the invariance of the configuration under translation
—
noun
(= invariability)
the quality of being resistant to variation
of
Preposition
—
Made using.
It is a house of cards.
action
Noun
—
An action is something that you do, or something that happens, especially with motion.
At 3am, just west of the building, the plan was put into action.
There was a huge difference between my thoughts and my actions.
What they did was clearly wrong, but their actions were understandable.
The Health Authority is preparing to take legal action against the restaurants that fail to follow the regulations.