I am doing my Ph.D. in mathematics and did not have my thesis carefully proofread before submission (which is definitely a mistake that I wish to correct). My thesis was approved after submission and I am now preparing for the oral defense.
Now as I reread my thesis in detail, I found that there are too many typos (probably more than five per page). Some are negligible, but some are essential. For example, I wrote "<" instead of "less than or equal to") in the conclusion of a proposition. Another example is that I quoted a wrong theorem number in a proof. I even wrote a same lemma with the same proof twice. One referee complains about the misprints in his/her report, but s/he still considers the thesis tolerable as a whole. But now I feel all those careless typos very annoying and they make the thesis much less readable.
Now I am seeking suggestions on what I should do. Should I correct all known typos and give each committee member a copy of the revised thesis on my defense? Is there any other thing that I can do right now?