From: Michael Hopkins <IMI=Ill > To: "Jeffrey E." <[email protected]> Subject: Re: Date: Sat, 19 Sep 2015 16:23:38 +0000 He Jeffrey I think Jacob Lurie is more of an expert in category theory than I am, but I appreciate Yau's endorsement. I'm not sure I understand the questions in your first email.

From: Michael Hopkins Sent: Saturday, September 19, 2015 4:24 PM To: Jeffrey E. Subject: Re: He Jeffrey I think Jacob Lurie is more of an expert in category theory than I am, but I appreciate Yau's endorsement. I'm not sure I understand the questions in your first email.

From: Michael Hopkins IIMMI > Sent: Saturday, September 19, 2015 4:24 PM To: Jeffrey E. Subject: Re: He Jeffrey I think Jacob Lurie is more of an expert in category theory than I am, but I appreciate Yau's endorsement. I'm not sure I understand the questions in your first email.