id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-1402	Kisil, V. V.	Erlangen Programme at Large 3.2 Ladder Operators in Hypercomplex Mechanics	2011	10	.pdf	application/pdf	5985	388	69	Then there is an additional pair of hyperbolic ladder operators, which are identical (up to factors) to (26): L± j No. 4/2011 Table 1: The action of hyperbolic ladder operators on a 2D lattice of eigenspaces.	cache/ap-1402.pdf	txt/ap-1402.txt