Lacunary sections for locally compact groupoids
classification
🧮 math.FA
math.OA
keywords
everylocallycompactcountablelacunaryorbitborelcalled
read the original abstract
It is proved that every second countable locally Hausdorff and locally compact continuous groupoid has a Borel set of units that meets every orbit and is what is called "lacunary," a property that implies that the intersection with every orbit is countable.
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