Shouldn't all those be in the repository before the package gets added? I note that there are several required packages listed that are not in the four package sources that I have enabled (testing, patches, packages, and extras).
The answer to your question is an emphatic "yes". Someone made a mistake,
I've now packaged and installed gtkmathviewer and it, along with aiksaurus and link-grammar, should be in testing soon. The bad news is that we are still missing at least one more dependency:
abiword-plugins: Depends: psiconv >= 0.9.8
It's next on my list to build. I will get this fixed one way or another.