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Above is an example of what happens. It seems that the first integral is longer than the second because the y-character is longer than the x-character as this doesn't happen with other similar-height characters:

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Is there a way to change this so that the integral defaults to the larger size regardless of whether x or y is used?

If it's any help: the stylesheet is Outline and the screen environment is bulleted.

Edit - In response to the comments, this was in a text cell (part of a set of math notes)

Edit - By default it is in TraditionalForm. Converting to StandardForm, then back to TraditionalForm makes them look the ideal way:

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This is just another example showing, alas, that Matheamtica is not an ideal medium in which to typeset mathematics. As contrasted with (La)TeX. – murray Oct 14 '12 at 15:40
This seems to be system-specific. I cannot reproduce this on MacOSX. – halirutan Oct 20 '12 at 23:02
I can reproduce this under MacOSX, 8.0.4. – John Fultz Oct 21 '12 at 4:55
up vote 6 down vote accepted

By default, Mathematica shrinks down typesetting that involves scripts and stretching inside of inline cells. The principle is to try to not introduce too much bulky whitespace as a result of the extra height of the typesetting. I suspect that the small scale at which things are operating is making it more sensitive (perhaps wrongly so) to differences of a pixel or two.

Perhaps you'd just rather have the extra space to get nice, large typesetting. That's really easy to do. In your notebook, choose the menu item:

Format->Edit Stylesheet...

In the resulting notebook, paste the following cell:

Cell[StyleData["InlineCell"], ScriptLevel->0]

You might have to save/close/reopen the notebook to get this change to trigger. Once you do, the change will affect all inline cells in your notebook.

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Yep. This did the trick. Incidentally, it solved another problem I was having - that typing "lim" and then trying to add an underscript would default to a subscript. After implementing your solution, that's been fixed as well. – Mirov Oct 22 '12 at 0:55
@user745434 Yeah, in addition to limits, ScriptLevel also affects the positioning of Subsuperscript, such as you see in definite integrals, and Underoverscript, such as you see in sums and products. – John Fultz Oct 22 '12 at 1:11

This only seems to happen in Inline Cells at certain magnification levels (or font sizes).

Input cell:

Mathematica graphics

As above but in an inline cell:

Mathematica graphics

The same inline cell but with a different Magnification level:

Mathematica graphics

I don't have a complete fix but this might at least help you work around the problem.

Would you consider having the integral symbol be a fixed but short size a solution?

On a second look I think there is an actual bug involved.
Here is the inline cell at 55% and 50% magnification:

Mathematica graphics
Mathematica graphics

Notice that at the lower magnification the left $\int$ actually grows while the right one shrinks.

I can think of no valid explanation for this behavior.

share|improve this answer
This is probably a bug, although I haven't done the due diligence to determine exactly what's going on (and, honestly, I probably won't for a while...sorry). – John Fultz Oct 21 '12 at 6:10
@JohnFultz Thanks. – Mr.Wizard Oct 21 '12 at 7:14

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