"<<" sign in Latex

Question

Hello,

I need to add the symbol "<<" in Latex. If i simply write "<<", i get in pdf some strange symbols. What should i put in front of "<<" so that in .pdf i see "<<" ?

Thanks

Answer 1

I would recommend $<<$.

Answer 2

Which "<<" symbol are you talking about? If you mean "much less than", then use \ll. If you mean the quotation mark, use \guillemotleft. If you mean two less-than symbols, use \textless \textless.

Answer 3

do you know detexify? it's an amazing web-app to help with questions like these. apart from that i'd use the suggestion of mipadi above...

Answer 4

Simply typing << would give the expected output if you use T1 font encoding:

\usepackage[T1]{fontenc}

You won't get << in the output using the standard encoding OT1. Perhaps see the examples on Special LaTeX symbols.

Stefan