How to phrase omissions correctly in a thesis? This might be a strange question, but I am currently thinking about a good phrase to use if I want to emphasize that the theoretical omissions I am making are not caused by neglect, laziness, or because they don't fit my results or something. Instead, I want to quickly get across that the main reason I am not discussing them is that it would increase the section without adding anything of value.

Is there some good phrase that gets this across?

To give a specific example: Let's say I am describing an instrument that heats up a sample until it goes into a phase transition. The instrument works the same way no matter what phase the sample is currently in, but it's a different type of transition in each case. For solids, it would be melting. For liquids, it would be vaporization. For gases, it would be the formation of a plasma. The underlying principles are always the same, but depending on the transition different energies are necessary, the changes take different amounts of time etc., and of course the terminology is completely different. So even though it's the same, and I could talk about it in a very general way, I can't because language fails me. I simply cannot phrase it elegantly, so I have to omit stuff that is not absolutely necessary.

I can't say "I'm leaving this out because modern languages are not advanced enough to discuss this phenomenon in a general way, even though it's actually a very simple phenomenon. And my professor wants this to be 150 pages or less and I'm running out of space." But this is kind of what my problem is.

Any suggestions?
You could explain one case in detail, then cover the other cases by listing what terms to substitute for the other cases. Especially if you're dealing with applying the same equation with different terminology, you could provide a table of which variable is named what in each case.

E.g.


  Because the principles only differ in terminology, only the solid to liquid transition is covered in detail. The equivalent terminology for each transition is in table 3.