id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-920	Balková, L’.	Return Words and Recurrence Function of a Class of Infinite Words	2007	5	.pdf	application/pdf	5303	240	78	For b �1and 2 3� �a , then it holds for l(k), k � �, l a( )1 1� � , l( )2 5� , l k n a( ) ( )� � 10 , for S k Sn n 1 0 11 1 0 0( ) ( )( , ) ( , )� � � , n � �, l k n( ) ( )� � 00101 for S k Sn n 0 1 1 10 0 1 1( ) ( )( , ) ( , )� �� � , n � �. A factor w u� �( ) is called singular if w �1 or if there exist a word v u� �( ) and letters x x y y, , ,� � �� such that w xvy� , x x� �, y y� �, and � � �x vy xvy u, ( )� .	cache/ap-920.pdf	txt/ap-920.txt