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Extension and contraction of I to D^-1R

Peter

Well-known member
MHB Site Helper
Jun 22, 2012
2,918
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 \(\displaystyle I^e \) and \(\displaystyle I^c \) except that the superscripts e and c occur before the I.

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

Peter
 

MarkFL

Administrator
Staff member
Feb 24, 2012
13,775
Use the codes:

^eI to get: \(\displaystyle ^eI\)

^cI to get: \(\displaystyle ^cI\)
 

Peter

Well-known member
MHB Site Helper
Jun 22, 2012
2,918
Use the codes:

^eI to get: \(\displaystyle ^eI\)

^cI to get: \(\displaystyle ^cI\)

Thanks Mark

Appreciate the help.

Peter
 

Evgeny.Makarov

Well-known member
MHB Math Scholar
Jan 30, 2012
2,492
See also StackExchange for some options that fine-tune the spacing.
 

Deveno

Well-known member
MHB Math Scholar
Feb 15, 2012
1,967
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.