BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//jEvents 2.0 for Joomla//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:STANDARD
DTSTART:20241110T140000
RDATE:20250309T030000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:America/New_York EST
END:STANDARD
BEGIN:STANDARD
DTSTART:20251102T010000
RDATE:20260308T030000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:America/New_York EST
END:STANDARD
BEGIN:STANDARD
DTSTART:20261101T010000
RDATE:20270314T030000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:America/New_York EST
END:STANDARD
BEGIN:STANDARD
DTSTART:20271107T010000
RDATE:20280312T030000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:America/New_York EST
END:STANDARD
BEGIN:STANDARD
DTSTART:20281105T010000
RDATE:20290311T030000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:America/New_York EST
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20250309T030000
RDATE:20251102T010000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:America/New_York EDT
END:DAYLIGHT
BEGIN:DAYLIGHT
DTSTART:20260308T030000
RDATE:20261101T010000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:America/New_York EDT
END:DAYLIGHT
BEGIN:DAYLIGHT
DTSTART:20270314T030000
RDATE:20271107T010000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:America/New_York EDT
END:DAYLIGHT
BEGIN:DAYLIGHT
DTSTART:20280312T030000
RDATE:20281105T010000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:America/New_York EDT
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
UID:bb876c146b5e2de282839789ddd347ae
CATEGORIES:Number Theory Seminar
CREATED:20251106T183431
SUMMARY:Representations of binary by quaternary quadratic forms
LOCATION:HLL 525
DESCRIPTION:<p data-olk-copy-source="MessageBody" style="color: #242424; font-family: '
 Segoe UI', 'Segoe UI Web (West European)', -apple-system, 'system-ui', Robo
 to, 'Helvetica Neue', sans-serif; font-size: 15px; font-style: normal; font
 -weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-i
 ndent: 0px; text-transform: none; widows: 2; word-spacing: 0px; white-space
 : normal; background-color: #ffffff;">Abstract: Let $q,Q$ be two integral q
 uadratic forms in $m &lt; n$ variables. One can ask when $q$ can be represe
 nted by $Q$ - that is, whether there exists an $n times m$-integer matrix $
 T$ such that $Q circ T = q$. Naturally, a necessary condition is that such 
 a representation exists locally, meaning over the real numbers and modulo $
 N$ for every positive integer $N$. In the absence of local obstructions, do
 es a (global) representation of $q$ by $Q$ exist?</p>
CONTACT:Andreas Wieser
DTSTAMP:20260829T164804
DTSTART;TZID=America/New_York:20251111T140000
DTEND;TZID=America/New_York:20251111T150000
SEQUENCE:0
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR