I would like to state claims so that they are numbered and in italics, but with no bold.

I can do a separate:

\newtheorem*{claim1}{\textnormal{\textit{Claim 1}}}

for each number. But still the period at the end comes out in bold. How can I fix that?

  • 1
    what document class and theorem package are you using? Jan 3, 2018 at 20:43
  • amsthm ######## Jan 3, 2018 at 20:48
  • the amsthm documentation tells how to define your own \newtheoremstykle. Jan 3, 2018 at 20:58
  • Package thmtools makes it easy and cooperates well with amsthm.
    – Bernard
    Jan 3, 2018 at 21:20

1 Answer 1


Just create your own \theoremstyle:

enter image description here




\newtheoremstyle{claim}% name
  {\topsep}% space above
  {\topsep}% space below
  {}% body font
  {}% indent amount
  {\itshape}% theorem head font
  {}% punctuation after theorem head
  {.5em}% space after theorem head
  {\thmname{#1}\thmnumber{ #2}\thmnote{ (#3)}}% theorem head spec


A theorem

A named theorem

% ---

A description

A named definition

% ---

A claim

A named claim


Defining your own styles are covered in the amsthm documentation (section 4.3 New theorem styles, p 9).

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