# \linebreak in theorem style

I would like something like this amsthm: \newtheoremstyle, headspace, \mbox{}, and lists but also with an indent after the new line, as if I wrote ~ and pressed enter twice. Ideally without ntheorem. I tried

``````\newtheoremstyle{break}  % follow `plain` defaults but change HEADSPACE.
{\topsep}   % ABOVESPACE
{\topsep}   % BELOWSPACE
{\itshape}  % BODYFONT
{0pt}       % INDENT (empty value is the same as 0pt)
• a compilable example would really help here. also, try `\newline` instead of `\linebreak` for the next-to-last argument; that's what is generally recommended, but i don't have time to investigate why. – barbara beeton Aug 28 '17 at 13:46
• answer to sub-question: `\par` is the (la)tex equivalent to a blank line. an alternate form (essentially a primitive, without all the latex addenda) is `\endgraf`; this is usable in situations where `\par` or a blank line are not "accepted". – barbara beeton Aug 28 '17 at 15:08
• i took your sub-question to mean "more generally". none of the methods i mentioned would work in a `\newtheoremstyle` definition that i'm aware of, except possibly in the last, "custom", argument. but even there, it's questionable. there is a "break" theorem style defined in the `amsthm` users guide, although it doesn't indent the next line. it does use `\newline`. i will experiment. – barbara beeton Aug 28 '17 at 21:00