I've occasionaly seen these arrows over numbers, but I don't know what they're called or exactly what they mean.
I'm assuming they have something to do with the motion, but I'm not sure.
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Chevron above Arabic number marks pitch of the notes with respect to the root of the key. In this case these notes are 6 and 5 in scale of the key.
There is one flat in key signature, so the key could be F major or D minor. In this case it must be F major, as D is 6 in F (it is interval of major sixth above F), and C is 5 in F.