BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:A Gordon-Litherland form for ribbon surfaces - Brendan Owens (Univ
 ersity of Glasgow)
DTSTART:20170202T153000Z
DTEND:20170202T163000Z
UID:TALK70559@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:<span>Co-authors: Josh Greene and Saso Strle<br><br>I will des
 cribe work in progress aimed at generalising the Gordon-Litherland form to
  the case of properly embedded surfaces in the four-ball and the four-sphe
 re.&nbsp\; I will also discuss a motivating non-application involving conc
 ordance invariants of links which lie on definite surfaces in S^4.<br> <br
 > <br> </span>
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR