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Meanings of topological invariant in English

Russian
топологическое свойство
Portuguese
lista de invariantes topológicos
Spanish
propiedad topológica

Object of study in the category of topological spaces.

топологическое свойство
Usage of topological invariant in English
1
For conventional topological phases, the boundary gapless modes are determined by bulk topological invariants.
Pubmed
2
With unchanged bulk topological invariants, their first-order boundaries undergo transitions separating different phases with second-order boundary zero modes.
Pubmed
3
We define winding numbers around these vortex lines and identify them to be the bulk topological invariants for a class of semimetals.
Pubmed