I want to customize my sections to look like the following but I don't know how to do it. Can somebody help ?

How I want my section's number to look like

marked as duplicate by Martin Thoma, Sigur, Paul Gessler, Adam Liter, Masroor Jul 28 '14 at 23:31

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  • 1
    What are V, 1, 2 supposed to be? Part, chapter, section numbers? Which document class? – Bernard Jul 28 '14 at 22:47
  • Exact, V, 1, 2 are supposed to be Chapter, Section, Subsection. I'm using the book document class. – sk001 Jul 28 '14 at 22:50
  • 2
    \renewcommand{\thechapter}{\Roman{chapter}} in the preamble should do in a normal setup – user31729 Jul 28 '14 at 22:51

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