Cosmetic change on p27.

Turns a display fraction into an inline text fraction.
Merge branch 'master' of github.com:SPancratz/deformation-paper
Merge branch 'master' of github.com:SPancratz/deformation-paper
Remove a comma.
Simplify a sentence.
Increase size of parentheses for some H_dR.
Remove "can".
Turn 1/d in an equation into a fraction.
Change partial P / partial t to text-display.
Remove a comma.
Remove "all of".
Change "denote" to "be" and "for" to "in".
Rewrite the last sentence in Cor 3.19.
Remove "then".
Add "in order" for Cor 4.15.
Change "b" to "alpha" in 4.16.
Add comma in remark 4.18.
Remove a comma and "will" before Prop 5.4.
Resize parentheses in Prop 5.4.
Turn a frac into a /.