What is the difference between l subscript infinity and l superscript infinity?

[bugatti79]

Folks,

Is there a difference between l subscript infinity and l superscript infinity. I believe the latter is the space if bounded sequences?

thanks

 

[Mark44]

I believe they both mean the same thing - the space of bounded infinite sequences. The more usual notation uses, I believe, superscript notation, like so
$$\ell^{\infty}$$