Sentence:  On the other hand , the null space of * * f and the null space of * * f together span V , the former being the subspace spanned by * * f and the <WSD>latter</WSD> the subspace spanned by * * f and * * f . 
Meaning of the word marked with <WSD> tags:  referring to the second of two things or persons mentioned (or the last one or ones of several)