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ive sorted it!!!!!!!!!!! i must have pasted another version of it into the same file!!!!!!!!!
thank you very much!!!

I have litrally deleted the last section....used an online compiler to try it but the pdf it generates still contains the last section....it makes no sense to me at allllllllllllllllllllll.....the code i put in the online box makes no reference at all to the contents of the last paragraph yet it is ...

I have just deleted the whole of the last section "cosets and lagranges theorem", compiled the document but nothing changes in the PDF.
This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian)
entering extended mode
(./iso.tex
LaTeX2e <2009/09/24>
Babel <v3.8l> and hyphenation patterns for ...

I know it compiles but the last paragraph does not appear!!!!

Hi I'm starting to get very annoyed and need some help....I am writing somthing for uni in latex, it has been working fine pdflatex has compiled the pdf correctly upuntil now!!! I get no error msg but anything i add to my document past a certain point does not appear in the final pdf...pls help (I ...