Sentence:  The self-abnegating state of shame proves to be allied with another of the key figures of Agamben's discourse: <WSD>heteronymy</WSD>. This notion is understood here in the sense of characters and fictional authors functioning as alter egos of the author or narrator: the multiple names are seen as referring to a single subject. 
Meaning of the word marked with <WSD> tags:  The use of multiple names for a single person or thing; polyonymy