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X-WR-CALNAME;VALUE=TEXT:What's On At UWA
X-WR-TIMEZONE;VALUE=TEXT:Australia/Perth
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DTSTART:19700101T000000
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BEGIN:VEVENT
UID:P-20170829T091148Z-3080-2743@events.uwa.edu.au
DTSTART;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170901T160000
DTEND;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170901T170000
CLASS:PUBLIC
CREATED:20170829T091148Z
DESCRIPTION:There will be refreshments in Maths & Stats tea room at 15:40\
, and we will\ngo for drinks at the UWA Tavern or the UniClub after the se
minar. All are most welcome.\n\nSpeaker: Gordon Royle (University of Weste
rn Australia)\nTitle: Hamilton Cycles in Cubic Graphs\nTime and place: 16:
00 Friday 01/09/2017 in Weatherburn LT\n\nAbstract: Starting from early at
tempts to prove the 4-colour theorem\, the study of hamilton cycles in cub
ic graphs has been an integral part of graph theory for well over a centur
y. Despite a number of beautiful results\, there are still many fundamenta
l unresolved questions about both the existence and enumeration of hamilto
n cycles in various classes of cubic graphs. In this talk I will describe
various results and open problems from this body of work\, including some
recent counting results obtained with Irene Pivotto.\n\nPast and future se
minars may be found at http://www.maths.uwa.edu.au/~glasby/S17.html\n\n
DTSTAMP:20170829T091148Z
LAST-MODIFIED:20170831T073104Z
ORGANIZER;CN=Stephen Glasby:MAILTO:glasbys@gmail.com
SEQUENCE:2
SUMMARY:Groups and Combinatorics Seminar\, Gordon Royle (UWA)
URL:http://events.uwa.edu.au/event/20170829T091148Z-3080-2743@events.uwa.e
du.au/whatson/CMSC
END:VEVENT
BEGIN:VEVENT
UID:P-20170904T043553Z-3080-23368@events.uwa.edu.au
DTSTART;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170908T140000
DTEND;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170908T170000
CLASS:PUBLIC
CREATED:20170904T043553Z
DESCRIPTION:There will be refreshments in Maths & Stats tea room at 15:40\
, and we will go for drinks at the UWA Tavern or the UniClub after the sem
inar. All are most welcome.\n\nSpeaker: Nick Gill (University of South Wal
es)\nTitle: On Cherlin's conjecture for primitive binary groups\nTime and
place: 16:00 Friday 08/09/2017 in Weatherburn LT\n\nAbstract: Roughly spea
king\, a permutation group G on a set X is called "binary" if one can calc
ulate the orbits of G on X^n for any n once one knows the orbits of G on X
^2. This definition was conceived in the 1990's by Cherlin who was interes
ted in ideas coming out of model theory. He also formulated a conjecture w
hich asserts that all primitive binary permutation groups lie in one of a
number of known families.\n\nThanks to work by Cherlin himself\, and by Wi
scons\, this conjecture has been reduced to a statement about almost simpl
e groups. I will describe work with Francesco Dalla Volta (Milano-Bicocca)
\, Francis Hunt (South Wales)\, Martin Liebeck (Imperial) and Pablo Spiga
(Milano-Bicocca) which aims at resolving the conjecture in full. This work
is group theoretic in nature.\n\nI will also try and explain the model th
eoretic context of the conjecture\, with a particular focus on Lachlan's t
heory of homogeneous relational structures.
DTSTAMP:20170904T043553Z
LAST-MODIFIED:20170905T043720Z
ORGANIZER;CN=Stephen Glasby:MAILTO:glasbys@gmail.com
SEQUENCE:3
SUMMARY:Groups and Combinatorics Seminar\, Nick Gill (University of South
Wales) 16:00 Friday 08/09/2017 in Weatherburn LT
URL:http://events.uwa.edu.au/event/20170904T043553Z-3080-23368@events.uwa.
edu.au/whatson/CMSC
END:VEVENT
BEGIN:VEVENT
UID:P-20170907T035504Z-3080-11923@events.uwa.edu.au
DTSTART;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170915T160000
DTEND;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170915T170000
CLASS:PUBLIC
CREATED:20170907T035505Z
DESCRIPTION:Speaker: Hendrik Van Maldeghem (Universiteit Gent/Ghent Univer
sity)\nTitle: Pappian unitals in Pappian projective planes\nTime and place
: 16:00 Friday 15/09/2017 in Weatherburn LT\n\nAbstract: We define a class
of objects in pappian projective planes by a simple algebraic formula and
parametrized by quadratic field extensions. These objects turn out to be
ordinary hermitian curves if the extension is separable\, and projections
of certain quadrics otherwise. Endowed with the secant lines\, we call the
resulting point-block incidence structures "Pappian unitals". These have
some remarkable properties such as the lack of O'Nan configurations\, the
admittance of translations and a nontrivial group of projectivities\, and
a characterization via a geometric construction using the André represent
ation of the projective plane relative to the quadratic extension. We clas
sify the embeddings of all Pappian unitals in arbitrary pappian projective
planes\, recovering and extending a recent result by Korchmáros\, Cossid
ente and Szönyi for finite hermitian unitals.
DTSTAMP:20170907T035505Z
LAST-MODIFIED:20170918T092713Z
ORGANIZER;CN=Stephen Glasby:MAILTO:glasbys@gmail.com
SEQUENCE:3
SUMMARY:Groups and Combinatorics Seminar\, Hendrik Van Maldeghem (Ghent Un
iv.) 16:00 Friday 15/09/2017 in Weatherburn LT
URL:http://events.uwa.edu.au/event/20170907T035504Z-3080-11923@events.uwa.
edu.au/whatson/CMSC
END:VEVENT
BEGIN:VEVENT
UID:P-20170918T092014Z-3080-20533@events.uwa.edu.au
DTSTART;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170922T160000
DTEND;TZID=/softwarestudio.org/Olson_20010626_2/Australia/Perth:20170922T170000
CLASS:PUBLIC
CREATED:20170918T092014Z
DESCRIPTION:Speaker: Jeroen Schillewaert (University of Auckland)\nTitle:
Small maximal independent sets\nTime and place: 16:00 Friday 22/09/2017 in
Engineering LT2 G04 (NOTE unusual location)\n\nAbstract: We study random
constructions in incidence structures using a general theorem on set syste
ms. Our main result applies to a wide variety of well-studied problems in
finite geometry to give almost tight bounds on the sizes of various substr
uctures. This is joint work with Jacques Verstraete (UCSD).\n\nPast and fu
ture seminars may be found at http://www.maths.uwa.edu.au/~glasby/S17.html
DTSTAMP:20170918T092014Z
LAST-MODIFIED:20170919T032048Z
ORGANIZER;CN=Stephen Glasby:MAILTO:glasbys@gmail.com
SEQUENCE:2
SUMMARY:Groups and Combinatorics Seminar 16:00 Fri 22/9/2017 Engineering L
T2 G04: Jeroen Schillewaert
URL:http://events.uwa.edu.au/event/20170918T092014Z-3080-20533@events.uwa.
edu.au/whatson/CMSC
END:VEVENT
END:VCALENDAR