MHB Extension and contraction of I to D^-1R

[Math Amateur]

At the bottom of page 708 in Dummit and Foote (Chapter 15, Section 15.4 Localization) we find the definition of the extension and contraction of ideals.

The notation is similar to $$ I^e $$ and $$ I^c $$ except that the superscripts e and c occur before the I.

Can someone please help me with the latex for these symbols?

Peter

 

[MarkFL]

Use the codes:

^eI to get: $$^eI$$

^cI to get: $$^cI$$

 

[Math Amateur]

Use the codes:

^eI to get: $$^eI$$

^cI to get: $$^cI$$

Thanks Mark

Appreciate the help.

Peter

 

[Evgeny.Makarov]

See also StackExchange for some options that fine-tune the spacing.

 

[Deveno]

One thing I've noticed in latex is that if you put an "empty character" (using {}) before a preceding superscript/subscript, it seems to give better alignment with other similarly tagged symbols.