Gothic (Fraktur).

If gothic letters are <#382#>necessary<#382#>, please use those of the relevant AMS-TEX<#383#><#383#> alphabet which are available from the American Mathematical Society.

In LATEX<#384#><#384#> only the following gothic letters are available: 75 yields ℜ and 76 yields ℑ. These should <#385#>not<#385#> be used when you need gothic letters for your contribution. Use AMS-TEX<#386#><#386#> gothic as explained above. For the real and the imaginary parts of a complex number within math mode you should use instead: 77 (which yields Re) or 78 (which yields Im).