when jets 0, 1, and 2 all match - the whole jet bundle, your frame and mine, my R³ and yours
C³ <3
(see also: foam)
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> [how long have you been thinking in jet bundles?]
my whole life, far as I can tell. finding out it had a name was like finding out I was gay, or being autistic
... huh. I want more `phenomena :: formal-objects-as-inhabited-measurement-basis` mappings. there are surely more.