id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-944	Jakubský, V.	Pseudo-Hermitian Operators in a Description of Physical Systems	2007	4	.pdf	application/pdf	3282	188	64	In other words, there should hold � � � �� � � �1 2 1 20 0 0 0( ), ( ) ( ) ( ), ( ) ( )� U t U t . Thus, we may write the resulting scalar product of two solutions �i of the Klein- -Gordon equation in the following form � �( , ) ( , ) , � , � , � � � � � � � � � � � 1 2 1 2 1 2 1 2 1 1 2 1 � � � � � � � � �� m i m � �� � � �2 1 2 1 1� � �� , , ( , ).	cache/ap-944.pdf	txt/ap-944.txt